FN6934
Rev.5.00
Jun 23, 2014
ISL21080
300nA NanoPower Voltage References
DATASHEET
FN6934 Rev.5.00 Page 1 of 21
Jun 23, 2014
The ISL21080 analog voltage references feature low supply
voltage operation at ultra-low 310nA typ, 1.5µA max operating
current. Additionally, the ISL21080 family features guaranteed
initial accuracy as low as ±0.2% and 50ppm/°C temperature
coefficient.
These references are ideal for general purpose portable
applications to extend battery life at lower cost. The ISL21080
is provided in the industry standard 3 Ld SOT-23 pinout.
The ISL21080 output voltages can be used as precision
voltage sources for voltage monitors, control loops, standby
voltages for low power states for DSP, FPGA, Datapath
Controllers, microcontrollers and other core voltages: 0.9V,
1.024V, 1.25V, 1.5V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V and
5.0V.
Special Note: Post-assembly x-ray inspection may lead to permanent
changes in device output voltage and should be minimized or
avoided. For further information, please see “Applications
Information” on page 14 and AN1533, “X-Ray Effects on Intersil FGA
References”.
Applications
• Energy harvesting applications
• Wireless sensor network applications
• Low power voltage sources for controllers, FPGA, ASICs or
logic devices
• Battery management/monitoring
• Low power standby voltages
•Portable Instrumentation
• Consumer/medical electronics
• Wearable electronics
• Lower cost industrial and instrumentation
• Power regulation circuits
• Control loops and compensation networks
• LED/diode supply
Features
• Reference output voltage . . . . . . . . 0.900V, 1.024V, 1.250V,
1.500V, 2.048V, 2.500V, 3.000V, 3.300V, 4.096V, 5.000V
• Initial accuracy:
- ISL21080-09 and -10 . . . . . . . . . . . . . . . . . . . . . . . . . ±0.7%
- ISL21080-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.6%
- ISL21080-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.5%
- ISL21080-20 and -25 . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3%
- ISL21080-30, -33, -41, and -50 . . . . . . . . . . . . . . . . . ±0.2%
• Input voltage range:
- ISL21080-09 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0V to 5.5V
- ISL21080-10, -12, -15, -20 and -25. . . . . . . . . 2.7V to 5.5V
- ISL21080-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2V to 5.5V
- ISL21080-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5V to 5.5V
- ISL21080-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 8.0V
- ISL21080-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V to 8.0V
• Output voltage noise . . . . . . . . . . . . .30µVP-P (0.1Hz to 10Hz)
• Supply current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5µA (max)
• Tempco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50ppm/°C
• Output current capability . . . . . . . . . . . . . . . . . . . . . . . . ±7mA
• Operating temperature range. . . . . . . . . . . . . -40°C to +85°C
• Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Ld SOT-23
• Pb-Free (RoHS compliant)
Related Literature
• See AN1494, “Reflow and PC Board Assembly Effects on
Intersil FGA References”
• See AN1533, “X-Ray Effects on Intersil FGA References”
• See AN1761, “ISL21080XXEV1Z User’s Guide”
FIGURE 1. IIN vs VIN, 3 UNITS
0
100
200
300
400
500
VIN (V)
IN (nA)
UNIT 1
UNIT 3
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
UNIT 2
ISL21080
FN6934 Rev.5.00 Page 2 of 21
Jun 23, 2014
Pin Configuration
ISL21080
(3 LD SOT-23)
TOP VIEW
1
2
3
VOUT
GND
VIN
Pin Descriptions
PIN NUMBER PIN NAME DESCRIPTION
1V
IN Input Voltage Connection.
2V
OUT Voltage Reference Output
3 GND Ground Connection
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART
MARKING
(Note 4)
VOUT OPTION
(V)
GRADE
(%)
TEMP. RANGE
(°C)
PACKAGE
Tape & Reel
(Pb-Free)
PKG.
DWG. #
ISL21080DIH309Z-TK BCLA 0.9 ±0.7 -40 to +85 3 Ld SOT-23 P3.064
ISL21080DIH310Z-TK BCMA 1.024 ±0.7 -40 to +85 3 Ld SOT-23 P3.064
ISL21080DIH312Z-TK BCNA 1.25 ±0.6 -40 to +85 3 Ld SOT-23 P3.064
ISL21080CIH315Z-TK BCDA 1.5 ±0.5 -40 to +85 3 Ld SOT-23 P3.064
ISL21080CIH320Z-TK BCPA 2.048 ±0.3 -40 to +85 3 Ld SOT-23 P3.064
ISL21080CIH325Z-TK BCRA 2.5 ±0.3 -40 to +85 3 Ld SOT-23 P3.064
ISL21080CIH330Z-TK BCSA 3.0 ±0.2 -40 to +85 3 Ld SOT-23 P3.064
ISL21080CIH333Z-TK BCTA 3.3 ±0.2 -40 to +85 3 Ld SOT-23 P3.064
ISL21080CIH341Z-TK BCVA 4.096 ±0.2 -40 to +85 3 Ld SOT-23 P3.064
ISL21080CIH350Z-TK BCWA 5.0 ±0.2 -40 to +85 3 Ld SOT-23 P3.064
NOTES:
1. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL21080. For more information on MSL please see techbrief TB363.
4. The part marking is located on the bottom of the part.
ISL21080
FN6934 Rev.5.00 Page 3 of 21
Jun 23, 2014
Absolute Maximum Ratings Thermal Information
Max Voltage
VIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.5V
V
IN to GND (ISL21080-41 and 50 only) . . . . . . . . . . . . . . . -0.5V to +10V
V
OUT to GND (10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VOUT +1V
V
OUT to GND (10s)
ISL21080-41 and 50 only . . . . . . . . . . . . . . . . . . . . . . -0.5V to +5.1V
ESD Ratings
Human Body Model (Tested to JESD22-A114) . . . . . . . . . . . . . . . . . . 5kV
Machine Model (Tested to JESD22-A115) . . . . . . . . . . . . . . . . . . . . . 500V
Charged Device Model (Tested to JESD22-C101) . . . . . . . . . . . . . . . . 2kV
Latch Up (Tested per JESD-78B; Class 2, Level A) . . . . . . . . . . . . . . 100mA
Environmental Operating Conditions
X-Ray Exposure (Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mRem
Thermal Resistance (Typical) JA (°C/W) JC (°C/W)
3 Lead SOT-23 (Notes 6, 7). . . . . . . . . . . . . . 275 110
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .+107°C
Continuous Power Dissipation (TA = +85°C) . . . . . . . . . . . . . . . . . . .99mW
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
Recommended Operating Conditions
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
5. Measured with no filtering, distance of 10” from source, intensity set to 55kV and 70mA current, 30s duration. Other exposure levels should be
analyzed for Output Voltage drift effects. See “Applications Information” on page 14.
6. JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
7. For JC, the “case temp” location is taken at the package top center.
8. Post-reflow drift for the ISL21080 devices will range from 100µV to 1.0mV based on experimental results with devices on FR4 double sided boards.
The design engineer must take this into account when considering the reference voltage after assembly.
9. Post-assembly x-ray inspection may also lead to permanent changes in device output voltage and should be minimized or avoided. Initial accuracy
can change 10mV or more under extreme radiation. Most inspection equipment will not affect the FGA reference voltage, but if x-ray inspection is
required, it is advisable to monitor the reference output voltage to verify excessive shift has not occurred.
Electrical Specifications (ISL21080-09, VOUT = 0.9V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 13) TYP
MAX
(Note 13) UNIT
VOUT Output Voltage 0.9 V
VOA VOUT Accuracy @ TA = +25°C (Notes 8, 9) -0.7 +0.7 %
TC VOUT Output Voltage Temperature Coefficient
(Note 10)
50 ppm/°C
VIN Input Voltage Range 2.0 5.5 V
IIN Supply Current 0.35 1.5 µA
VOUT /VIN Line Regulation 2V < VIN < 5.5V 30 350 µV/V
VOUT/IOUT Load Regulation Sourcing: 0mA IOUT 10mA 6 100 µV/mA
Sinking: -10mA IOUT 0mA 23 350 µV/mA
ISC Short Circuit Current TA = +25°C, VOUT tied to GND 30 mA
tRTurn-on Settling Time VOUT = ±0.1% with no load 1 ms
Ripple Rejection f = 120Hz -40 dB
eNOutput Voltage Noise 0.1Hz f 10Hz 40 µVP-P
VNBroadband Voltage Noise 10Hz f 1kHz 10 µVRMS
Noise Density f = 1kHz 1.1 µV/Hz
VOUT/TAThermal Hysteresis (Note 11) TA = +125°C 100 ppm
VOUT/t Long Term Stability (Note 12) TA = +25°C 60 ppm
ISL21080
FN6934 Rev.5.00 Page 4 of 21
Jun 23, 2014
Electrical Specifications (ISL21080-10, VOUT = 1.024V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 13) TYP
MAX
(Note 13) UNIT
VOUT Output Voltage 1.024 V
VOA VOUT Accuracy @ TA = +25°C (Notes 8, 9) -0.7 +0.7 %
TC VOUT Output Voltage Temperature Coefficient
(Note 10)
50 ppm/°C
VIN Input Voltage Range 2.7 5.5 V
IIN Supply Current 0.31 1.5 µA
VOUT /VIN Line Regulation 2.7V < VIN < 5.5V 80 350 µV/V
VOUT/IOUT Load Regulation Sourcing: 0mA IOUT 7mA 25 100 µV/mA
Sinking: -7mA IOUT 0mA 50 350 µV/mA
ISC Short Circuit Current TA = +25°C, VOUT tied to GND 50 mA
tRTurn-on Settling Time VOUT = ±0.1% with no load 4 ms
Ripple Rejection f = 120Hz -40 dB
eNOutput Voltage Noise 0.1Hz f 10Hz 30 µVP-P
VNBroadband Voltage Noise 10Hz f 1kHz 52 µVRMS
Noise Density f = 1kHz 2.2 µV/Hz
VOUT/TAThermal Hysteresis (Note 11) TA = +165°C 100 ppm
VOUT/t Long Term Stability (Note 12) TA = +25°C 50 ppm
Electrical Specifications (ISL21080-12, VOUT = 1.25V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 13) TYP
MAX
(Note 13) UNIT
VOUT Output Voltage 1.25 V
VOA VOUT Accuracy @ TA = +25°C (Notes 8, 9) -0.6 +0.6 %
TC VOUT Output Voltage Temperature Coefficient
(Note 10)
50 ppm/°C
VIN Input Voltage Range 2.7 5.5 V
IIN Supply Current 0.31 1.5 µA
VOUT /VIN Line Regulation 2.7V < VIN < 5.5V 80 350 µV/V
VOUT/IOUT Load Regulation Sourcing: 0mA IOUT 7mA 25 100 µV/mA
Sinking: -7mA IOUT 0mA 50 350 µV/mA
ISC Short Circuit Current TA = +25°C, VOUT tied to GND 50 mA
tRTurn-on Settling Time VOUT = ±0.1% with no load 4 ms
Ripple Rejection f = 120Hz -40 dB
eNOutput Voltage Noise 0.1Hz f 10Hz 30 µVP-P
VNBroadband Voltage Noise 10Hz f 1kHz 52 µVRMS
Noise Density f = 1kHz 1.1 µV/Hz
VOUT/TAThermal Hysteresis (Note 11) TA = +165°C 100 ppm
VOUT/t Long Term Stability (Note 12) TA = +25°C 50 ppm
ISL21080
FN6934 Rev.5.00 Page 5 of 21
Jun 23, 2014
d
Electrical Specifications (ISL21080-15, VOUT = 1.5V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 13) TYP
MAX
(Note 13) UNIT
VOUT Output Voltage 1.5 V
VOA VOUT Accuracy @ TA = +25°C (Notes 8, 9) -0.5 +0.5 %
TC VOUT Output Voltage Temperature Coefficient
(Note 10)
50 ppm/°C
VIN Input Voltage Range 2.7 5.5 V
IIN Supply Current 0.31 1.5 µA
VOUT /VIN Line Regulation 2.7V < VIN < 5.5V 80 350 µV/V
VOUT/IOUT Load Regulation Sourcing: 0mA IOUT 7mA 10 100 µV/mA
Sinking: -7mA IOUT 0mA 50 350 µV/mA
ISC Short Circuit Current TA = +25°C, VOUT tied to GND 50 mA
tRTurn-on Settling Time VOUT = ±0.1% with no load 4 ms
Ripple Rejection f = 120Hz -40 dB
eNOutput Voltage Noise 0.1Hz f 10Hz 30 µVP-P
VNBroadband Voltage Noise 10Hz f 1kHz 52 µVRMS
Noise Density f = 1kHz 1.1 µV/Hz
VOUT/TAThermal Hysteresis (Note 11) TA = +165°C 100 ppm
VOUT/t Long Term Stability (Note 12) TA = +25°C 50 ppm
Electrical Specifications (ISL21080-20, VOUT = 2.048V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 13) TYP
MAX
(Note 13) UNIT
VOUT Output Voltage 2.048 V
VOA VOUT Accuracy @ TA = +25°C (Notes 8, 9) -0.3 +0.3 %
TC VOUT Output Voltage Temperature Coefficient
(Note 10)
50 ppm/°C
VIN Input Voltage Range 2.7 5.5 V
IIN Supply Current 0.31 1.5 µA
VOUT /VIN Line Regulation 2.7V < VIN < 5.5V 80 350 µV/V
VOUT/IOUT Load Regulation Sourcing: 0mA IOUT 7mA 25 100 µV/mA
Sinking: -7mA IOUT 0mA 50 350 µV/mA
ISC Short Circuit Current TA = +25°C, VOUT tied to GND 50 mA
tRTurn-on Settling Time VOUT = ±0.1% with no load 4 ms
Ripple Rejection f = 120Hz -40 dB
eNOutput Voltage Noise 0.1Hz f 10Hz 30 µVP-P
VNBroadband Voltage Noise 10Hz f 1kHz 52 µVRMS
Noise Density f = 1kHz 1.1 µV/Hz
VOUT/TAThermal Hysteresis (Note 11) TA = +165°C 100 ppm
VOUT/t Long Term Stability (Note 12) TA = +25°C 50 ppm
ISL21080
FN6934 Rev.5.00 Page 6 of 21
Jun 23, 2014
Electrical Specifications (ISL21080-25, VOUT = 2.5V) VIN = 3.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 13) TYP
MAX
(Note 13) UNIT
VOUT Output Voltage 2.5 V
VOA VOUT Accuracy @ TA = +25°C (Notes 8, 9) -0.3 +0.3 %
TC VOUT Output Voltage Temperature Coefficient
(Note 10)
50 ppm/°C
VIN Input Voltage Range 2.7 5.5 V
IIN Supply Current 0.31 1.5 µA
VOUT /VIN Line Regulation 2.7V < VIN < 5.5V 80 350 µV/V
VOUT/IOUT Load Regulation Sourcing: 0mA IOUT 7mA 25 100 µV/mA
Sinking: -7mA IOUT 0mA 50 350 µV/mA
ISC Short Circuit Current TA = +25°C, VOUT tied to GND 50 mA
tRTurn-on Settling Time VOUT = ±0.1% with no load 4 ms
Ripple Rejection f = 120Hz -40 dB
eNOutput Voltage Noise 0.1Hz f 10Hz 30 µVP-P
VNBroadband Voltage Noise 10Hz f 1kHz 52 µVRMS
Noise Density f = 1kHz 1.1 µV/Hz
VOUT/TAThermal Hysteresis (Note 11) TA = +165°C 100 ppm
VOUT/t Long Term Stability (Note 12) TA = +25°C 50 ppm
Electrical Specifications (ISL21080-30, VOUT = 3.0V) VIN = 5.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 13) TYP
MAX
(Note 13) UNIT
VOUT Output Voltage 3.0 V
VOA VOUT Accuracy @ TA = +25°C (Notes 8, 9) -0.2 +0.2 %
TC VOUT Output Voltage Temperature Coefficient
(Note 10)
50 ppm/°C
VIN Input Voltage Range 3.2 5.5 V
IIN Supply Current 0.31 1.5 µA
VOUT /VIN Line Regulation 3.2V < VIN < 5.5V 80 350 µV/V
VOUT/IOUT Load Regulation Sourcing: 0mA IOUT 7mA 25 100 µV/mA
Sinking: -7mA IOUT 0mA 50 350 µV/mA
ISC Short Circuit Current TA = +25°C, VOUT tied to GND 50 mA
tRTurn-on Settling Time VOUT = ±0.1% with no load 4 ms
Ripple Rejection f = 120Hz -40 dB
eNOutput Voltage Noise 0.1Hz f 10Hz 30 µVP-P
VNBroadband Voltage Noise 10Hz f 1kHz 52 µVRMS
Noise Density f = 1kHz 1.1 µV/Hz
VOUT/TAThermal Hysteresis (Note 11) TA = +165°C 100 ppm
VOUT/t Long Term Stability (Note 12) TA = +25°C 50 ppm
ISL21080
FN6934 Rev.5.00 Page 7 of 21
Jun 23, 2014
Electrical Specifications (ISL21080-33, VOUT = 3.3V) VIN = 5.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 13) TYP
MAX
(Note 13) UNIT
VOUT Output Voltage 3.3 V
VOA VOUT Accuracy @ TA = +25°C (Notes 8, 9) -0.2 +0.2 %
TC VOUT Output Voltage Temperature Coefficient
(Note 10)
50 ppm/°C
VIN Input Voltage Range 3.5 5.5 V
IIN Supply Current 0.31 1.5 µA
VOUT /VIN Line Regulation 3.5 V < VIN < 5.5V 80 350 µV/V
VOUT/IOUT Load Regulation Sourcing: 0mA IOUT 10mA 25 100 µV/mA
Sinking: -10mA IOUT 0mA 50 350 µV/mA
ISC Short Circuit Current TA = +25°C, VOUT tied to GND 50 mA
tRTurn-on Settling Time VOUT = ±0.1% with no load 4 ms
Ripple Rejection f = 120Hz -40 dB
eNOutput Voltage Noise 0.1Hz f 10Hz 30 µVP-P
VNBroadband Voltage Noise 10Hz f 1kHz 52 µVRMS
Noise Density f = 1kHz 1.1 µV/Hz
VOUT/TAThermal Hysteresis (Note 11) TA = +165°C 100 ppm
VOUT/t Long Term Stability (Note 12) TA = +25°C 50 ppm
Electrical Specifications (ISL21080-41 VOUT = 4.096V) VIN = 5.0V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 13) TYP
MAX
(Note 13) UNIT
VOUT Output Voltage 4.096 V
VOA VOUT Accuracy @ TA = +25°C (Notes 8, 9) -0.2 +0.2 %
TC VOUT Output Voltage Temperature Coefficient
(Note 10)
50 ppm/°C
VIN Input Voltage Range 4.5 8.0 V
IIN Supply Current 0.5 1.5 µA
VOUT /VIN Line Regulation 4.5 V < VIN < 8.0V 80 350 µV/V
VOUT/IOUT Load Regulation Sourcing: 0mA IOUT 10mA 10 100 µV/mA
Sinking: -10mA IOUT 0mA 20 350 µV/mA
ISC Short Circuit Current TA = +25°C, VOUT tied to GND 80 mA
tRTurn-on Settling Time VOUT = ±0.1% with no load 4 ms
Ripple Rejection f = 120Hz -40 dB
eNOutput Voltage Noise 0.1Hz f 10Hz 30 µVP-P
VNBroadband Voltage Noise 10Hz f 1kHz 52 µVRMS
Noise Density f = 1kHz 1.1 µV/Hz
VOUT/TAThermal Hysteresis (Note 11) TA = +165°C 100 ppm
VOUT/t Long Term Stability (Note 12) TA = +25°C 50 ppm
ISL21080
FN6934 Rev.5.00 Page 8 of 21
Jun 23, 2014
Electrical Specifications (ISL21080-50 VOUT = 5.0V) VIN = 6.5V, TA = -40°C to +85°C, IOUT = 0, unless otherwise
specified. Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER DESCRIPTION CONDITIONS
MIN
(Note 13) TYP
MAX
(Note 13) UNIT
VOUT Output Voltage 5.0 V
VOA VOUT Accuracy @ TA = +25°C (Notes 8, 9) -0.2 +0.2 %
TC VOUT Output Voltage Temperature Coefficient
(Note 10)
50 ppm/°C
VIN Input Voltage Range 5.5 8.0 V
IIN Supply Current 0.5 1.5 µA
VOUT /VIN Line Regulation 5.5 V < VIN < 8.0V 80 350 µV/V
VOUT/IOUT Load Regulation Sourcing: 0mA IOUT 10mA 10 100 µV/mA
Sinking: -10mA IOUT 0mA 20 350 µV/mA
ISC Short Circuit Current TA = +25°C, VOUT tied to GND 80 mA
tRTurn-on Settling Time VOUT = ±0.1% with no load 4 ms
Ripple Rejection f = 120Hz -40 dB
eNOutput Voltage Noise 0.1Hz f 10Hz 30 µVP-P
VNBroadband Voltage Noise 10Hz f 1kHz 52 µVRMS
Noise Density f = 1kHz 1.1 µV/Hz
VOUT/TAThermal Hysteresis (Note 11) TA = +165°C 100 ppm
VOUT/t Long Term Stability (Note 12) TA = +25°C 50 ppm
NOTES:
10. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in VOUT is divided by the
temperature range; in this case, -40°C to +85°C = +125°C.
11. Thermal Hysteresis is the change of VOUT measured @ TA = +25°C after temperature cycling over a specified range, TA. VOUT is read initially at TA
= +25°C for the device under test. The device is temperature cycled and a second VOUT measurement is taken at +25°C. The difference between
the initial VOUT reading and the second VOUT reading is then expressed in ppm. For TA = +125°C, the device under test is cycled from +25°C to
+85°C to -40°C to +25°C.
12. Long term drift is logarithmic in nature and diminishes over time. Drift after the first 1000 hours will be approximately 10ppm/1khrs.
13. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
Typical Performance Characteristics Curves VOUT = 0.9V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
unless otherwise specified.
FIGURE 2. IIN vs VIN, 3 UNITS FIGURE 3. IIN vs VIN OVER-TEMPERATURE
0
0.1
0.2
0.3
0.4
0.5
0.6
2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2
IIN (µA)
VIN (V)
TYP
LOW
HIGH
VIN (V)
IIN (µA)
0
0.1
0.2
0.3
0.4
0.5
0.6
2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2
+85°C
-40°C +25°C
ISL21080
FN6934 Rev.5.00 Page 9 of 21
Jun 23, 2014
FIGURE 4. LINE REGULATION, 3 UNITS FIGURE 5. LINE REGULATION OVER-TEMPERATURE
FIGURE 6. VOUT vs TEMPERATURE NORMALIZED to +25°C FIGURE 7. LINE TRANSIENT RESPONSE, WITH CAPACITIVE LOAD
FIGURE 8. LINE TRANSIENT RESPONSE FIGURE 9. LOAD REGULATION OVER-TEMPERATURE
Typical Performance Characteristics Curves VOUT = 0.9V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
unless otherwise specified. (Continued)
0.89980
0.89985
0.89990
0.89995
0.90000
0.90005
0.90010
0.90015
0.90020
2.02.42.83.23.64.04.44.85.2
0.9V AT VIN = 3.0V
VIN (V)
TYP
VOUT (V) NORMALIZED TO
HIGH
LOW
VIN (V)
VIN = 3.0V
VOUT (µV) NORMALIZED TO
-150
-100
-50
0
50
100
150
200
2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2
+25°C
+85°C
-40°C
0.8990
0.8995
0.9000
0.9005
0.9010
-40 -30 -20 -10 0 10 30 40 50 60 70 80
VOUT (V)
NORMALIZED TO +25°C
TEMPERATURE (°C)
TYP
HIGH
LOW
20
-200
-150
-100
-50
0
50
100
150
200
0 0.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TIME (µs)
VIN = +0.3V
VIN = -0.3V
VOUT (mV)
1.0
-200
-150
-100
0
50
100
150
200
VIN = +0.3V
VIN = -0.3V
VOUT (mV)
-50
TIME (µs)
0 0.5 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.01.0
-500
0
500
-10-9-8-7-6-5-4-3-2 -1 1 3 5 7 910
LOAD (mA)
SINKING SOURCING
+25°C
+85°C
-40°C
VOUT (µV)
86420
ISL21080
FN6934 Rev.5.00 Page 10 of 21
Jun 23, 2014
FIGURE 10. LOAD TRANSIENT RESPONSE FIGURE 11. LOAD TRANSIENT RESPONSE
FIGURE 12. DROPOUT FIGURE 13. TURN-ON TIME
Typical Performance Characteristics Curves VOUT = 1.5V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
unless otherwise specified.
FIGURE 14. IIN vs VIN, 3 UNITS FIGURE 15. IIN vs VIN OVER-TEMPERATURE
Typical Performance Characteristics Curves VOUT = 0.9V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
unless otherwise specified. (Continued)
-1000
-800
-600
-400
-200
0
200
400
600
800
1000
TIME (ms)
012345678910
VOUT (mV)
ILOAD = +7mA
ILOAD = -7mA
-500
-400
-300
-200
-100
0
100
200
300
400
500
TIME (ms)
012345678910
VOUT (mV)
ILOAD = +50µA
ILOAD = -50µA
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
VOUT (V)
VIN (V)
NO LOAD 7mA
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0 0.3 0.6 0.9 1.2 1.5
TIME (ms)
VOUT (V)
TYP HIGH
VDD
LOW
0
100
200
300
400
500
VIN (V)
IN (nA)
UNIT 1
UNIT 3
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
UNIT 2
0
100
200
300
400
500
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
-40°C
+85°C
IN (nA)
VIN (V)
+25°C
ISL21080
FN6934 Rev.5.00 Page 11 of 21
Jun 23, 2014
FIGURE 16. LINE REGULATION, 3 UNITS FIGURE 17. LINE REGULATION OVER-TEMPERATURE
FIGURE 18. VOUT vs TEMPERATURE NORMALIZED to +25°C FIGURE 19. LINE TRANSIENT RESPONSE, WITH CAPACITIVE LOAD
FIGURE 20. LINE TRANSIENT RESPONSE FIGURE 21. LOAD REGULATION OVER-TEMPERATURE
Typical Performance Characteristics Curves VOUT = 1.5V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
unless otherwise specified. (Continued)
1.49980
1.49985
1.49990
1.49995
1.50005
1.50010
1.50015
1.50020
(NORMAILIZED TO 1.5V AT VIN = 3V)
1.50000
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
VOUT (V)
UNIT 2
UNIT 3
UNIT 1
VIN (V)
-150
-125
-100
-75
-50
-25
0
25
50
75
100
125
150
2.73.13.53.94.34.75.15.5
(NORMALIZED TO VIN = 3V)
+85°C
+25°C
-40°C
OUT (µV)
V
VIN (V)
1.4995
1.4996
1.4997
1.4998
1.4999
1.5000
1.5001
1.5002
1.5003
1.5004
1.5005
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
VIN (V)
V
OUT (V)
UNIT 1
UNIT 3
UNIT 2
CL= 500pF
VIN = -0.3V
VIN = 0.3V
1ms/DIV
50mV/DIV
VIN = 0.3V
VIN = -0.3V
CL= 0pF
1ms/DIV
50mV/DIV
-500
-300
-100
100
300
500
700
900
-7 -6 -5 -4 -3 -2 -1
SINKING OUTPUT CURRENT SOURCING
VOUT (µV)
01234567
+85°C
-40°C
+25°C
0
ISL21080
FN6934 Rev.5.00 Page 12 of 21
Jun 23, 2014
FIGURE 22. LOAD TRANSIENT RESPONSE FIGURE 23. LOAD TRANSIENT RESPONSE
FIGURE 24. DROPOUT FIGURE 25. TURN-ON TIME
FIGURE 26. ZOUT vs FREQUENCY FIGURE 27. PSRR vs FREQUENCY
Typical Performance Characteristics Curves VOUT = 1.5V, VIN = 3.0V, IOUT = 0mA, TA = +25°C
unless otherwise specified. (Continued)
IL= 7mA
2ms/DIV
500mV/DIV
IL= -7mA
IL= 50A
IL= -50A
100mV/DIV
1ms/DIV
1.38
1.40
1.42
1.44
1.46
1.48
1.50
1.52
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN (V)
VOUT (V)
7mA LOAD
NO LOAD
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TIME (ms)
VOLTAGE (V)
VIN
UNIT 1
UNIT 3
UNIT 2
0
20
40
60
80
100
120
140
160
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
ZOUT (Ω)
1nF
10nF
100nF
NO LOAD
-70
-60
-50
-40
-30
-20
-10
0
10 100 1k 10k 100k
FREQUENCY (Hz)
PSRR (dB)
1M
NO LOAD
1nF
10nF
100nF
ISL21080
FN6934 Rev.5.00 Page 13 of 21
Jun 23, 2014
Typical Performance Characteristics Curves TA = +25°C unless otherwise specified.
FIGURE 28. DROPOUT, ISL21080-10 FIGURE 29. DROPOUT, ISL21080-12
FIGURE 30. DROPOUT, ISL21080-25 FIGURE 31. DROPOUT, ISL21080-30
FIGURE 32. DROPOUT, ISL21080-33 FIGURE 33. DROPOUT, ISL21080-41
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
VOUT (V)
VIN (V)
NO LOAD 7mA
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9
VOUT (V)
VIN (V)
NO LOAD 7mA
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
2.5 2.7 2.9 3.1 3.3 3.5
VOUT (V)
VIN (V)
NO LOAD 7mA
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.0 3.2 3.4 3.6 3.8 4.0
VOUT (V)
VIN (V)
NO LOAD 7mA
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.3 3.5 3.7 3.9 4.1 4.3 4.5
VOUT (V)
VIN (V)
NO LOAD 7mA
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.1 4.3 4.5 4.7 4.9 5.1
VOUT (V)
VIN (V)
NO LOAD 7mA
ISL21080
FN6934 Rev.5.00 Page 14 of 21
Jun 23, 2014
Applications Information
FGA Technology
The ISL21080 series of voltage references use the floating gate
technology to create references with very low drift and supply
current. Essentially, the charge stored on a floating gate cell is set
precisely in manufacturing. The reference voltage output itself is a
buffered version of the floating gate voltage. The resulting reference
device has excellent characteristics which are unique in the industry:
very low temperature drift, high initial accuracy, and almost zero
supply current. Also, the reference voltage itself is not limited by
voltage bandgaps or zener settings, so a wide range of reference
voltages can be programmed (standard voltage settings are
provided, but customer-specific voltages are available).
The process used for these reference devices is a floating gate CMOS
process, and the amplifier circuitry uses CMOS transistors for amplifier
and output transistor circuitry. While providing excellent accuracy, there
are limitations in output noise level and load regulation due to the MOS
device characteristics. These limitations are addressed with circuit
techniques discussed in other sections.
Board Assembly Considerations
FGA references provide high accuracy and low temperature drift
but some PC board assembly precautions are necessary. Normal
Output voltage shifts of 100µV to 1mV can be expected with
Pb-free reflow profiles or wave solder on multi-layer FR4 PC
boards. Precautions should be taken to avoid excessive heat or
extended exposure to high reflow or wave solder temperatures,
this may reduce device initial accuracy.
Post-assembly x-ray inspection may also lead to permanent changes in
device output voltage and should be minimized or avoided. If x-ray
inspection is required, it is advisable to monitor the reference output
voltage to verify excessive shift has not occurred. If large amounts of
shift are observed, it is best to add an X-ray shield consisting of thin zinc
(300µm) sheeting to allow clear imaging, yet block
x-ray energy that affects the FGA reference.
Special Applications Considerations
In addition to post-assembly examination, there are also other
X-ray sources that may affect the FGA reference long term
accuracy. Airport screening machines contain X-rays and will
have a cumulative effect on the voltage reference output
accuracy. Carry-on luggage screening uses low level X-rays and is
FIGURE 34. DROPOUT, ISL21080-50
High Current Application
FIGURE 35. DIFFERENT VIN AT ROOM TEMPERATURE FIGURE 36. DIFFERENT VIN AT HIGH TEMPERATURE (+85°C)
Typical Performance Characteristics Curves TA = +25°C unless otherwise specified. (Continued)
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.0 5.2 5.4 5.6 5.8 6.0
VOUT (V)
VIN (V)
NO LOAD 7mA
1.492
1.494
1.496
1.498
1.500
1.502
0 5 10 15 20 25 30
ILOAD (mA)
VREF (V)
35
VIN = 5V
VIN = 3.3V
VIN = 3.5V
1.492
1.494
1.496
1.498
1.500
1.502
0 5 10 15 20 25 30
ILOAD (mA)
VREF (V)
VIN = 5V
VIN = 3.5V
VIN = 3.3V
35
ISL21080
FN6934 Rev.5.00 Page 15 of 21
Jun 23, 2014
not a major source of output voltage shift, however, if a product is
expected to pass through that type of screening over 100 times,
it may need to consider shielding with copper or aluminum.
Checked luggage X-rays are higher intensity and can cause
output voltage shift in much fewer passes, thus devices expected
to go through those machines should definitely consider
shielding. Note that just two layers of 1/2 ounce copper planes
will reduce the received dose by over 90%. The leadframe for the
device which is on the bottom also provides similar shielding.
If a device is expected to pass through luggage X-ray machines
numerous times, it is advised to mount a 2-layer (minimum) PC
board on the top, and along with a ground plane underneath will
effectively shield it from 50 to 100 passes through the machine.
Since these machines vary in X-ray dose delivered, it is difficult to
produce an accurate maximum pass recommendation.
Nanopower Operation
Reference devices achieve their highest accuracy when powered
up continuously, and after initial stabilization has taken place.
This drift can be eliminated by leaving the power on continuously.
The ISL21080 is the first high precision voltage reference with ultra low
power consumption that makes it possible to leave power on
continuously in battery operated circuits. The ISL21080 consumes
extremely low supply current due to the proprietary FGA technology.
Supply current at room temperature is typically 350nA, which is 1 to 2
orders of magnitude lower than competitive devices. Application
circuits using battery power will benefit greatly from having an accurate,
stable reference, which essentially presents no load to the battery.
In particular, battery powered data converter circuits that would
normally require the entire circuit to be disabled when not in use
can remain powered up between conversions as shown in
Figure 37. Data acquisition circuits providing 12 bits to 24 bits of
accuracy can operate with the reference device continuously
biased with no power penalty, providing the highest accuracy and
lowest possible long term drift.
Other reference devices consuming higher supply currents will need to
be disabled in between conversions to conserve battery capacity.
Absolute accuracy will suffer as the device is biased and requires time
to settle to its final value, or, may not actually settle to a final value as
power on time may be short. Table 1 shows an example of battery life in
years for ISL21080 in various power on condition with 1.5µA maximum
current consumption.
ISL21080 Used as a Low Cost Precision
Current Source
Using an N-JET and a Nanopower voltage reference, ISL21080, a
precision, low cost, high impedance current source can be
created. The precision of the current source is largely dependent
on the tempco and accuracy of the reference. The current setting
resistor contributes less than 20% of the error.
Board Mounting Considerations
For applications requiring the highest accuracy, board mounting
location should be reviewed. Placing the device in areas subject to
slight twisting can cause degradation of the accuracy of the
reference voltage due to die stresses. It is normally best to place the
device near the edge of a board, or the shortest side, as the axis of
bending is most limited at that location. Obviously, mounting the
device on flexprint or extremely thin PC material will likewise cause
loss of reference accuracy.
TABLE 1. EXAMPLE OF BATTERY LIFE IN YEARS FOR ISL21080 IN
VARIOUS POWER ON CONDITIONS WITH 1.5µA MAX
CURRENT
BATTERY RATING
(mAH) CONTINUOUS
50% DUTY
CYCLE
10% DUTY
CYCLE
40 3 6 30*
225 16.3* 32.6* 163*
NOTE: *Typical Li-ion battery has a shelf life of up to 10 years.
VIN = +3.0V
0.001µF TO 0.01µF
SERIAL
BUS
VIN VOUT
GND
ISL21080
REF IN
ENABLE
SCK
SDAT
A/D CONVERTER
12 TO 24-BIT
0.01µF
10µF
FIGURE 37. REFERENCE INPUT FOR ADC CONVERTER
FIGURE 38. ISL21080 USED AS A LOW COST PRECISION CURRENT
SOURCE
+8V TO 28V
0.01µF
VIN VOUT
10kΩ
RSET
0.1%
10ppm/°C
ISY ~ 0.31µA
IL AT 0.1% ACCURACY
~150.3µA
ISL21080-1.5 ZOUT > 100M
ISET
VOUT
ISET = RSET
IL = ISET + IRSET
VOUT = 1.5V
GND
ISL21080
FN6934 Rev.5.00 Page 16 of 21
Jun 23, 2014
Noise Performance and Reduction
The output noise voltage in a 0.1Hz to 10Hz bandwidth is
typically 30µVP-P. This is shown in the plot in the “Typical
Performance Characteristics Curves” which begin on page 10.
The noise measurement is made with a bandpass filter made of
a 1-pole high-pass filter with a corner frequency at 0.1Hz and a
2-pole low-pass filter with a corner frequency at 12.6Hz to create
a filter with a 9.9Hz bandwidth. Noise in the 10kHz to 1MHz
bandwidth is approximately 400µVP-P with no capacitance on
the output, as shown in Figure 39. These noise measurements
are made with a 2 decade bandpass filter made of a 1-pole
high-pass filter with a corner frequency at 1/10 of the center
frequency and 1-pole low-pass filter with a corner frequency at
10 times the center frequency. Figure 39 also shows the noise in
the 10kHz to 1MHz band can be reduced to about 50µVP-P using
a 0.001µF capacitor on the output. Noise in the 1kHz to 100kHz
band can be further reduced using a 0.1µF capacitor on the
output, but noise in the 1Hz to 100Hz band increases due to
instability of the very low power amplifier with a 0.1µF
capacitance load. For load capacitances above 0.001µF, the
noise reduction network shown in Figure 40 is recommended.
This network reduces noise significantly over the full bandwidth.
As shown in Figure 39, noise is reduced to less than 40µVP-P
from 1Hz to 1MHz using this network with a 0.01µF capacitor
and a 2k resistor in series with a 10µF capacitor.
Turn-On Time
The ISL21080 devices have ultra-low supply current and thus, the
time to bias-up internal circuitry to final values will be longer than
with higher power references. Normal turn-on time is typically
7ms. This is shown in Figure 38. Since devices can vary in supply
current down to >300nA, turn-on time can last up to about 12ms.
Care should be taken in system design to include this delay
before measurements or conversions are started.
Temperature Coefficient
The limits stated for temperature coefficient (tempco) are governed
by the method of measurement. The overwhelming standard for
specifying the temperature drift of a reference, is to measure the
reference voltage at two temperatures, take the total variation,
(VHIGH - VLOW), and divide by the temperature extremes of
measurement (THIGH –T
LOW). The result is divided by the nominal
reference voltage (at T = +25°C) and multiplied by 106 to yield
ppm/°C. This is the “Box” method for specifying temperature
coefficient.
CL = 0
CL = 0.001µF
CL = 0.1µF
CL = 0.01µF AND 10µF + 2kΩ
400
350
300
250
200
150
100
50
0
1 10 100 1k 10k 100k
NOISE VOLTAGE (µVP-P)
FIGURE 39. NOISE REDUCTION
VIN = 3.0V
VIN
VO
GND
ISL21080
0.01µF
10µF
2kΩ
0.1µF
10µF
FIGURE 40. NOISE REDUCTION NETWORK
ISL21080
FN6934 Rev.5.00 Page 17 of 21
Jun 23, 2014
Typical Application Circuits
FIGURE 41. PRECISION 2.5V 50mA REFERENCE
FIGURE 42. 2.5V FULL SCALE LOW-DRIFT 10-BIT ADJUSTABLE VOLTAGE SOURCE
FIGURE 43. KELVIN SENSED LOAD
VIN = 3.0V
2N2905
2.5V/50mA
0.001µF
VIN
VOUT
GND
ISL21080
R = 200
VIN
VOUT
GND
2.7V TO 5.5V
0.1µF
0.001µF
VOUT
+
–
VCC RH
RL
X9119
VSS
SDA
SCL
2-WIRE BUS VOUT
(BUFFERED)
10µF
ISL21080
0.1µF
VIN
VOUT
GND
ISL21080
VOUT SENSE
LOAD
+
–
10µF
2.7V TO 5.5V
ISL21080
FN6934 Rev.5.00 Page 18 of 21
Jun 23, 2014
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you
have the latest Rev.
DATE REVISION CHANGE
June 23, 2014 FN6934.5 Converted to New Template
Updated POD with following changes:
In Detail A, changed lead width dimension from 0.13+/-0.05 to 0.085-0.19
Changed dimension of foot of lead from 0.31+/-0.10 to 0.38+/-0.10
In Land Pattern, added 0.4 Rad Typ dimension
In Side View, changed height of package from 0.91+/-0.03 to 0.95+/-0.07
May, 12, 2010 FN6934.4 Changed Theta JA in the “Thermal Information” on page 3 from 170 to 275. Added Theta JC and applicable note.
April 29, 2010 FN6934.3 Incorrect Thermal information, needs to be re-evaluated and added at a later date when the final data is
available. Removed Theta JC and applicable note from “Thermal Information” on page 3.
April 14, 2010 Corrected y axis label on Figure 9 from “VOUT (V)” to “VOUT (µV)”
April 6, 2010 Source/sink for 0.9V option changed from 7mA to 10mA
Line regulation condition for 0.9V changed from 2.7V to 2V
Line regulation typical for 0.9V option changed from 10 to 30µV/V
TA in Thermal Hysterisis conditions of 0.9V option changed from 165°C to 125°C
Moved “Board Assembly Considerations” and “Special Applications Considerations” to page 14. Deleted
“Handling and Board Mounting” section since “Board Assembly Considerations” on page 14 contains same
discussion.
Added “Special Note: Post-assembly x-ray inspection may lead to permanent changes in device output voltage
and should be minimized or avoided.” to “ISL21080” on page 1
Figures 2 and 3 revised to show line regulation and Iin down to 2V.
Figures 4 and 5 revised to show Vin down to 2V.
Added “Initial accuracy can change 10mV or more under extreme radiation.” to Note 9 on page 3.
April 1, 2010 1. page 3: Change Vin Min from 2.7 to 2.0
2. page 3: Change Iin Typ from 0.31 to 0.35
3. page 3: Change Line Reg Typ from 80 to 10
4. page 3: Change Load Reg Condition from 7mA to 10mA and -7mA to -10mA
5. page 3: Change Load Reg Typ for Source from 25 to 6 and Sink from 50 to 23.
6. page 3: Change Isc Typ from 50 to 30
7. page 3: Change tR from 4 to 1
8. Change Ripple Rejection typ for all options from -30 to -40
9. page 3: Change eN typ from 30 to 40V
10. page 3: Change VN typ from 50 to 10V
11. page 3: Change Noise Density typ from 1.1 to 2.2
12. page 3: Change Long Term Stability from 50 to 60
13. Added Figure 2 to 13 on page 8 to page 10 for 0.9V curves.
14. Added Figure 28 to 34 on page 13 to page 14 for other options Dropout curve.
15. page 1: Change Input Voltage Range for 0.9V option from TBD to 2V to 5.5V
16. Added latch up to “Absolute Maximum Ratings” on page 3
17. Added Junction Temperature to “Thermal Information” on page 3
18. Added JEDEC standards used at the time of testing for “ESD Ratings” on page 3
19. HBM in “Absolute Maximum Ratings” on page 3 changed from 5.5kV to 5kV
20. Added Theta JC and applicable note.
March 25, 2010 Throughout- Converted to new format. Changes made as follows:
Moved “Pin Configuration” and “Pin Descriptions” to page 2
Added “Related Literature” to page 1
Added key selling feature graphic Figure 1 to page 1
Added "Boldface limits apply..." note to common conditions of Electrical Specifications tables on page 3 through
page 8. Bolded applicable specs. Added Note 13 to MIN MAX columns of all Electrical Specifications tables.
Added ““Environmental Operating Conditions” to page 3 and added Note 5
Added “The process used for these reference devices is a floating gate CMOS process, and the amplifier circuitry
uses CMOS transistors for amplifier and output transistor circuitry. While providing excellent accuracy, there are
limitations in output noise level and load regulation due to the MOS device characteristics. These limitations are
addressed with circuit techniques discussed in other sections.” on page 14
ISL21080
FN6934 Rev.5.00 Page 19 of 21
Jun 23, 2014
Oct 14,2009 FN6934.2 1. Removed "Coming Soon" on page 1 and 2 for -10, -20, -41, and -50 options.
2. Page 1. Moved "ISL21080-505.5V to 8.0V" from bullet to sub-bullet.
3. Update package outline drawing P3.064 to most recent revision. Updates to package were to add land
pattern and move dimensions from table onto drawing (no change to package dimensions)
Sep 04, 2009 FN6934.1 Converted to new Intersil template. Added Revision History and Products Information. Updated Ordering
Information to match Intrepid, numbered all notes and added Moisture
Sensitivity Note with links. Moved Pin Descriptions to page 1 to follow pinout
Changed in Features Section
From: Reference Output Voltage1.25V, 1.5V, 2.500V, 3.300V
To: Reference Output Voltage 0.900V, 1.024V, 1.250V, 1.500V, 2.048V, 2.500V, 3.000V,
3.300V, 4.096V, 5.000V
From: Initial Accuracy: 1.5V±0.5%
To: Initial Accuracy:
ISL21080-09 and -10±0.7%
ISL21080-12 ±0.6%
ISL21080-15±0.5%
ISL21080-20 and -25±0.3%
ISL21080-30, -33, -41, and -50±0.2%
FROM: Input Voltage Range
ISL21080-12 (Coming Soon)2.7V to 5.5V
ISL21080-152.7V to 5.5V
ISL21080-25 (Coming Soon)2.7V to 5.5V
ISL21080-33 (Coming Soon)3.5V to 5.5V
TO: Input Voltage Range:
ISL21080-09, -10, -12, -15, -20, and -252.7V to 5.5V
ISL21080-09, -10, and 20 (Coming Soon)
ISL21080-303.2V to 5.5V
ISL21080-333.5V to 5.5V
ISL21080-41 (Coming Soon)4.5V to 8.0V
Added: ISL21080-50 (Coming Soon)5.5V to 8.0V Output Voltage Noise
30µVP-P (0.1Hz to 10Hz)
Updated Electrical Spec Tables by Tables with Voltage References 9, 10, 12, 20, 25, 30, 33
and 41.
Added to Abs Max Ratings:
VIN to GND (ISL21080-41 and 50 only-0.5V to +10V
VOUT to GND (10s)
(ISL21080-41 and 50 only-0.5V to +5.1V
Changed Tja in Thermal information from "202.70" to "170" to match ASYD in Intrepid
Added Note:
Post-assembly x-ray inspection may also lead to permanent changes in device output voltage and should be
minimized or avoided. Most inspection equipment will not affect the FGA reference voltage, but if x-ray
inspection is required, it is advisable to monitor the reference output voltage to verify excessive shift has not
occurred.
Added Special Applications Considerations Section on page 12.
July 28,2009 FN6934.0 Initial Release.
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you
have the latest Rev.
DATE REVISION CHANGE
Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted
in the quality certifications found at www.intersil.com/en/support/qualandreliability.html
Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are
current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its
subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
For additional products, see www.intersil.com/en/products.html
ISL21080
FN6934 Rev.5.00 Page 20 of 21
Jun 23, 2014
About Intersil
Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products
address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets.
For the most updated datasheet, application notes, related documentation and related parts, please see the respective product
information page found at www.intersil.com.
You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask.
Reliability reports are also available from our website at www.intersil.com/supporty
© Copyright Intersil Americas LLC 2009-2014. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
ISL21080
FN6934 Rev.5.00 Page 21 of 21
Jun 23, 2014
Package Outline Drawing
P3.064
3 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE (SOT23-3)
Rev 3, 3/12
Reference JEDEC TO-236.
Footlength is measured at reference to gauge plane.
Dimension does not include interlead flash or protrusions.
Dimensioning and tolerancing conform to AMSEY14.5m-1994.
3.
5.
4.
2.
Dimensions are in millimeters.1.
NOTES:
DETAIL "A"
SIDE VIEW
TYPICAL RECOMMENDED LAND PATTERN
TOP VIEW
C
0.10 C
0.20 M C
L
C1.30±0.10
C
L
0.950
2.37±0.27
2.92±0.12 4
4
10° TYP
(2 plcs)
0.013(MIN)
0.100(MAX)
SEATING PLANE
1.00±0.12
0.95±0.07
SEATING PLANE
GAUGE PLANE
0.25
0.38±0.10
DETAIL "A"
0.435±0.065 0 - 8 deg.
(2.15)
(1.25)
(0.60)
(0.95 typ.)
5
0.085 - 0.19
Dimensions in ( ) for Reference Only.
Interlead flash or protrusions shall not exceed 0.25mm per side.
(0.4 RAD TYP.)
