Original Creation Date: 05/02/95
Last Update Date: 04/14/98
Last Major Revision Date: 05/02/95
MJLF412-X REV 0C1 MICROCIRCUIT DATA SHEET
LOW OFFSET, LOW DRIFT DUAL JFET INPUT OPERATIONAL
AMPLIFIER
General Description
These devices are low cost, high speed, JFET input operational amplifiers with very low
input offset voltage and guaranteed input offset voltage drift. They require low supply
current yet maintain a large gain bandwidth product and fast slew rate. In addition, well
matched high voltage JFET input devices provide very low input bias and offset currents.
LF412 dual is pin compatible with the LM1558, allowing designers to immediately upgrade
the overall performance of existing designs.
These amplifiers may be used in applications such as high speed integrators, fast D/A
converters, sample and hold circuits and many other circuits requiring low input offset
voltage and drift, low input bias current, high input impedance, high slew rate and wide
bandwidth.
NS Part Numbers
JL412BGA
JL412BPA
Industry Part Number
LF412
Prime Die
LF412
Controlling Document
38510/11905
Processing
MIL-STD-883, Method 5004
Quality Conformance Inspection
MIL-STD-883, Method 5005
Subgrp Description Temp ( C)
o
1 Static tests at +25
2 Static tests at +125
3 Static tests at -55
4 Dynamic tests at +25
5 Dynamic tests at +125
6 Dynamic tests at -55
7 Functional tests at +25
8A Functional tests at +125
8B Functional tests at -55
9 Switching tests at +25
10 Switching tests at +125
11 Switching tests at -55
12 Settling time at +25
1
MICROCIRCUIT DATA SHEET
MJLF412-X REV 0C1
Features
- Internally trimmed offset voltage 1mV (max)
- Input offset voltage drift 10uV/ C (max)
- Low input bias current 50pA
- Low input noise Current 0.01pA/Root Hz
- Wide gain bandwidth 3MHz (min)
- High slew rate 10V/uS (min)
- Low supply current 1.8mA/Amplifier
- High input impedance 10E12 Ohms
- Low total harmonic distortion AV=10, RL=10K, +0.02%
Vo=20 Vp-p, BW=20 Hz - 20KHz
- Low 1/f noise corner 50Hz
- Fast settling time to 0.01% 2uS
2
MICROCIRCUIT DATA SHEET
MJLF412-X REV 0C1
(Absolute Maximum Ratings)
(Note 1)
Supply Voltage +18V
Differential Input Voltage +30V
Input Voltage Range
(Note 3) +15V
Output Short Circuit Duration
(Note 4) Continuous
Power Dissipation
(Note 2) 800mWH Package TBDJ Package
Tjmax 175 C
ThetaJA (Typical)
METAL CAN 160 C/W(Still Air) 83 C/W(500 LF/Min Air Flow)
CERDIP 122 C/W(Still Air) 66 C/W(500 LF/Min Air Flow)
ThetaJC 38 C/WMETAL CAN
15 C/WCERDIP
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Operating Ratings indicate conditions for which the device is functional, but do not
guarantee specific performance limits. For guaranteed specifications and test
conditions, see the Electrical Characteristics. The guaranteed specifications apply
only for the test conditions listed. Some performance characteristics. may degrade
when the device is not operated under the listed test conditions.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is
dictated by Tjmax (maximum junction temperature), ThetaJA (package junction to
ambient thermal resistance), and TA (ambient temperature). The maximum allowable
power dissipation at any temperature is Pdmax = (Tjmax - TA)/ThetaJA or the number
given in the Absolute Maximum Ratings, whichever is lower.
Note 3: Unless otherwise specified the absolute maximum negative input voltage is equal to
the negative power supply voltage.
Note 4: Any of the amplifier outputs can be shorted to ground indefinitely, however, more
than one should not be simultaneously shorted as the maximum junction temperature
will be exceeded.
3
MICROCIRCUIT DATA SHEET
MJLF412-X REV 0C1
Recommended Operating Conditions
Operating Temperature Range -55 C < TA < 125 C
Supply Voltage Range +5V to +15V
Storage Temperature Range -65 C < TA < 150 C
Lead Temperature 260 C(Soldering, 10 seconds)
ESD Tolerance
(Note 1) 1700V
Note 1: Human body model, 1.5K Ohms in series with 100pF
4
MJLF412-X REV 0C1 MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC: +Vcc = +15V, Vcm = 0V
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
Vio Input Offset
Voltage +Vcc = 26V, -Vcc = -4V, Vcm = -11V -5 5 mV 1
-7 7 mV 2, 3
+Vcc = 4V, -Vcc = -26V, Vcm = 11V -5 5 mV 1
-7 7 mV 2, 3
-5 5 mV 1
-7 7 mV 2, 3
+Vcc = +5V -5 5 mV 1
+Vcc = +5V -7 7 mV 2, 3
+Iib Input Bias
Current +Vcc = 26V, -Vcc = -4V, Vcm = -11V -0.4 0.2 nA 1
-10 50 nA 2
-0.2 0.2 nA 1
-10 50 nA 2
+Vcc = 4V, -Vcc = -26V, Vcm = 11V -0.2 1.2 nA 1
-10 70 nA 2
-Iib Input Bias
Current +Vcc = 26V, -Vcc = -4V, Vcm = -11V -0.4 0.2 nA 1
-10 50 nA 2
-0.2 0.2 nA 1
-10 50 nA 2
+Vcc = 4V, -Vcc = -26V, Vcm = 11V -0.2 1.2 nA 1
-10 70 nA 2
Iio Input Offset
Current -0.1 0.1 nA 1
-20 20 nA 2
+PSRR Power Supply
Rejection Ratio +Vcc = 20V to 10V, -Vcc = -15V 80 dB 1, 2,
3
-PSRR Power Supply
Rejection Ratio +Vcc = 15V, -Vcc = -20V to -10V 80 dB 1, 2,
3
CMR Input Voltage
Common Mode
Rejection
Vcm = -11V to +11V 80 dB 1, 2,
3
Ios(+) Output Short
Circuit Current t < 25mS -80 mA 1, 2,
3
Ios(-) Output Short
Circuit Current t < 25mS 80 mA 1, 2,
3
5
MJLF412-X REV 0C1 MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS(Continued)
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC: +Vcc = +15V, Vcm = 0V
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
Icc Supply Current 7 mA 1, 2
8mA3
DELTA Vio/
DELTA T Input Offset
Voltage 25 C < TA < +125 C 1 -30 30 uV/C 2
-55 C < TA < 25 C 1 -30 30 uV/C 3
+Vop Output Voltage
Swing RL = 10K Ohms 12 V 4, 5,
6
RL = 2K Ohms 10 V 4, 5,
6
-Vop Output Voltage
Swing RL = 10K Ohms -12 V 4, 5,
6
RL = 2K Ohms -10 V 4, 5,
6
AVS- Open Loop Voltage
Gain RL = 2K Ohms, Vout = -10V 2 50 V/mV 4
2 25 V/mV 5, 6
AVS+ Open Loop Voltage
Gain RL = 2K Ohms, Vout = 10V 2 50 V/mV 4
2 25 V/mV 5, 6
AVS Open Loop Voltage
Gain RL = 10K Ohms, Vout = +2V, +Vcc = +5V 2 20 V/mV 4, 5,
6
6
MJLF412-X REV 0C1 MICROCIRCUIT DATA SHEET
Electrical Characteristics
AC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
AC: +Vcc = +15V, Vcm = 0V
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
TR(tr) Transient
Response Rise
Time
AV = 1, Vin = 50mV, CL = 100pF,
RL = 2K Ohms 3 200 nS 7, 8A,
8B
TR(os) Transient
Response Rise
Time
AV = 1, Vin = 50mV, CL = 100pF,
RL = 2K Ohms 3 40 % 7, 8A,
8B
SR+ Slew Rate Vin = -5V to +5V 7 V/uS 7
5 V/uS 8A, 8B
SR- Slew Rate Vin = +5V to -5V 7 V/uS 7
5 V/uS 8A, 8B
NI(BB) Noise Broadband BW = 10Hz to 15KHz, RS = 0 Ohms 4 15 uVrms 7
NI(PC) Noise Popcorn BW = 10Hz to 15KHz, RS = 100K Ohms 4 80 uVpk 7
CS Channel
Separation RL = 2K Ohms, Vin = +10V 480 dB7
tS(+) Settling Time AV = 1 3 1500 nS 12
tS(-) Settling Time AV = 1 3 1500 nS 12
DC PARAMETERS: DRIFT VALUES
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC: +Vcc = +15V, Vcm = 0V. "Delta calculations performed at group B-5".
Vio Input Offset
Voltage -1 1 mV 1
+Iib Input Bias
Current -0.1 0.1 nA 1
-Iib Input Bias
Current -0.1 0.1 nA 1
Note 1: Calculated parameter
Note 2: Datalog reading in K = V/mV.
Note 3: Bench test
Note 4: Test on either A360, J273 AC or bench test.
7
MICROCIRCUIT DATA SHEET
MJLF412-X REV 0C1
Graphics and Diagrams
GRAPHICS# DESCRIPTION
05487HRA3 METAL CAN (H), TO-99, 8LD, .200 DIA P.C. (B/I CKT)
05974HRA2 CERDIP (J), 8 LEAD (B/I CKT)
H08CRF METAL CAN (H), TO-99, 8LD, .200 DIA P.C. (P/P DWG)
J08ARL CERDIP (J), 8 LEAD (P/P DWG)
P000176A METAL CAN (H), 8 LEAD (PINOUT)
P000177A CERDIP (J), 8 LEAD (PINOUT)
See attached graphics following this page.
8
N
N
MICROCIRCUIT DATA SHEET
MJLF412-X REV 0C1
Revision History
Rev ECN # Rel Date Originator Changes
0C1 M0002838 04/14/98 Barbara Lopez Update MDS: MJLF412-X Rev. 0B0 to MJLF412-X Rev. 0C1.
Updated graphics. Added thermal data. Added power
dissipation and Absolute note. Deleted Rev. A for
drawing number per Spec Control.
9
