REV. F
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reliable. However, no responsibility is assumed by Analog Devices for its
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may result from its use. No license is granted by implication or otherwise
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 www.analog.com
Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved.
a
AMP03
Precision, Unity-Gain
Differential Amplifier
FEATURES
High CMRR: 100 dB Typ
Low Nonlinearity: 0.001% Max
Low Distortion: 0.001% Typ
Wide Bandwidth: 3 MHz Typ
Fast Slew Rate: 9.5 V/␮s Typ
Fast Settling (0.01%): 1 ␮s Typ
Low Cost
APPLICATIONS
Summing Amplifiers
Instrumentation Amplifiers
Balanced Line Receivers
Current-Voltage Conversion
Absolute Value Amplifier
4to 20 mA Current Transmitter
Precision Voltage Reference Applications
Lower Cost and Higher Speed Version of INA105
GENERAL DESCRIPTION
The AMP03 is a monolithic unity-gain, high speed differential
amplifier. Incorporating a matched thin film resistor network,
the AMP03 features stable operation over temperature without
requiring expensive external matched components. The AMP03
is a basic analog building block for differential amplifier and
instrumentation applications.
The differential amplifier topology of the AMP03 both amplifies
the difference between two signals and provides extremely high
rejection of the common-mode input voltage. By providing
common-mode rejection (CMR) of 100 dB typical, the AMP03
solves common problems encountered in instrumentation design.
As an example, the AMP03 is ideal for performing either addi-
tion or subtraction of two signals without using expensive
externally matched precision resistors. The large common-mode
rejection is made possible by matching the internal resistors to
better than 0.002% and maintaining a thermally symmetric
layout. Additionally, due to high CMR over frequency, the
AMP03 is an ideal general amplifier for buffering signals in a
noisy environment into data acquisition systems.
The AMP03 is a higher speed alternative to the INA105.
Featuring slew rates of 9.5 V/µs and a bandwidth of 3 MHz, the
AMP03 offers superior performance to the INA105 for high
speed current sources, absolute value amplifiers, and summing
amplifiers.
FUNCTIONAL BLOCK DIAGRAM
–IN
+IN
SENSE
+V
CC
OUTPUT
–V
EE
REFERENCE
25k⍀25k⍀
25k⍀25k⍀
6
7
1
2
3
4
5
AMP03
PIN CONNECTIONS
8-Lead PDIP
(P Suffix)
1
2
3
4
8
7
6
5
TOP VIEW
(Not to Scale)
NC = NO CONNECT
AMP03
REFERENCE
SENSE
OUTPUT
V+
NC
–IN
+IN
V–
8-Lead SOIC
(S Suffix)
1
2
3
4
8
7
6
5
TOP VIEW
(Not to Scale)
NC = NO CONNECT
AMP03
REFERENCE
SENSE
OUTPUT
V+
NC
–IN
+IN
V–
Header
(J Suffix)
8
REFERENCE 1
–IN 2
+IN 3
7 V+
6 OUTPUT
5 SENSE
4
V–
NC
NC = NO CONNECT
–2– REV. F
AMP03–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
AMP03F AMP03B AMP03G
Parameter Symbol Conditions Min Typ Max Min Typ Max Min Typ Max Unit
Offset Voltage V
OS
V
CM
= 0 V –400 +10 +400 –700 +20 +700 –750 +25 +750 µV
Gain Error No Load, V
IN
= ±10 V,
R
S
= 0 Ω0.00004 0.008 0.00004 0.008 0.001 0.008 %
Input Voltage Range IVR (Note 1) ±20 ±20 ±20 V
Common-Mode Rejection CMR V
CM
= ±10 V 85 100 80 95 80 95 dB
Power Supply Rejection Ratio PSRR V
S
= ±6 V to ±18 V 0.6 10 0.6 10 0.7 10 µV/V
Output Swing V
O
R
L
= 2 kΩ±12 ±13.7 ±12 ±13.7 ±12 ±13.7 V
Short-Circuit Current Limit I
SC
Output Shorted
to Ground +45/–15 +45/–15 +45/–15 mA
Small-Signal Bandwidth (–3 dB) BW R
L
= 2 kΩ333MHz
Slew Rate SR R
L
= 2 kΩ69.5 6 9.5 6 9.5 V/µs
Capacitive Load Drive
Capability C
L
No Oscillation 300 300 300 pF
Supply Current I
SY
No Load 2.5 3.5 2.5 3.5 2.5 3.5 mA
NOTES
1
Input voltage range guaranteed by CMR test.
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICS
AMP03B
Parameter Symbol Conditions Min Typ Max Unit
Offset Voltage V
OS
V
CM
= 0 V –1500 +150 +1500 µV
Gain Error No Load, V
IN
= ±10 V, R
S
= 0 Ω0.0014 0.02 %
Input Voltage Range IVR ±20 V
Common-Mode Rejection CMR V
CM
= ±10 V 75 95 dB
Power Supply Rejection
Ratio PSRR V
S
= ±6 V to ±18 V 0.7 20 µV/V
Output Swing V
O
R
L
= 2 kΩ±12 ±13.7 V
Slew Rate SR R
L
= 2 kΩ9.5 V/µs
Supply Current I
SY
No Load 3.0 4.0 mA
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICS
AMP03F AMP03G
Parameter Symbol Conditions Min Typ Max Min Typ Max Unit
Offset Voltage V
OS
V
CM
= 0 V –1000 +100 +1000 –2000 +200 +2000 µV
Gain Error No Load, V
IN
= ±10 V, R
S
= 0 Ω0.0008 0.015 0.002 0.02 %
Input Voltage Range IVR ±20 ±20 V
Common-Mode Rejection CMR V
CM
= ±10 V 80 95 7590 dB
Power Supply Rejection
Ratio PSRR V
S
= ±6 V to ±18 V 0.7 15 1.0 15 µV/V
Output Swing V
O
R
L
= 2 kΩ±12 ±13.7 ±12 ±13.7 V
Slew Rate SR R
L
= 2 kΩ9.5 9.5 V/µs
Supply Current I
SY
No Load 2.6 4.0 2.6 4.0 mA
Specifications subject to change without notice.
(@ VS = ⴞ15 V, TA = +25ⴗC, unless otherwise noted.)
(@ VS = ⴞ15 V, –55ⴗC ≤ TA ≤ +125ⴗC for B Grade)
(@ VS = ⴞ15 V, –40ⴗC ≤ TA ≤ +85ⴗC for F and G Grades)
–3–
REV. F
AMP03
WAFER TEST LIMITS
(@ VS = ⴞ15 V, TA = 25ⴗC, unless otherwise noted.)*
AMP03GBC
Parameter Symbol Conditions Limit Unit
Offset Voltage V
OS
V
S
= ±18 V 0.5 mV max
Gain Error No Load, V
IN
= ±10 V, R
S
= 0 Ω0.008 % max
Input Voltage Range IVR ±10 V min
Common-Mode Rejection CMR V
CM
= ±10 V 80 dB min
Power Supply Rejection Ratio PSRR V
S
= ±6 V to ±18 V 8 µV/V max
Output Swing V
O
R
L
= 2 kΩ±12 V max
Short-Circuit Current Limit I
SC
Output Shorted to Ground +45/–15 mA min
Supply Current I
SY
No Load 3.5 mA max
*Electrical tests are performed at wafer probe to the limits shown. Due to variations in assembly methods and normal yield loss, yield after packaging is not guaranteed
for standard product dice. Consult factory to negotiate specifications based on dice lot qualifications through sample lot assembly and testing.
ABSOLUTE MAXIMUM RATINGS
1
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V
Input Voltage
2
. . . . . . . . . . . . . . . . . . . . . . . . . Supply Voltage
Output Short-Circuit Duration . . . . . . . . . . . . . . Continuous
Storage Temperature Range
P, J Package . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 60 sec) . . . . . . . . . . . . 300°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Operating Temperature Range
AMP03B . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C
AMP03F, AMP03G . . . . . . . . . . . . . . . . . . –40°C to +85°C
Package Type ␪
JA3
␪
JC
Unit
Header (J) 150 18 °C/W
8-Lead PDIP (P) 103 43 °C/W
8-Lead SOIC (S) 155 40 °C/W
NOTES
1
Absolute maximum ratings apply to both DICE and packaged parts, unless
otherwise noted.
2
For supply voltages less than ±18 V, the absolute maximum input voltage is equal
to the supply voltage.
3
θ
JA
is specified for worst-case mounting conditions, i.e., θ
JA
is specified for device
in socket for header and PDIP packages and for device soldered to printed circuit
board for SOIC package.
ORDERING GUIDE
Temperature Package Package
Model
1
Range Description Option
2
AMP03GP –40°C to +85°C8-Lead PDIP P-8
AMP03BJ –40°C to +85°CHeader H-08B
AMP03FJ –40°C to +85°CHeader H-08B
AMP03BJ/883C –55°C to +125°CHeader H-08B
AMP03GS –40°C to +85°C8-Lead SOIC S-8
AMP03GS-REEL –40°C to +85°C8-Lead SOIC S-8
5962-9563901MGA –55°C to +125°CHeader H-08B
AMP03GBC Die
NOTES
1
Burn-in is available on commercial and industrial temperature range parts in
PDIP and header packages.
2
Consult factory for /883 data sheet.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AMP03 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
DICE CHARACTERISTICS
1. REFERENCE
2. –IN
3. +IN
4. –VEE
5. SENSE
6. OUTPUT
7. +VCC
8. NC
DIE SIZE 0.076 inch ⴛ 0.076 inch, 5,776 sq. mm
(1.93 mm ⴛ 1.93 mm, 3.73 sq. mm)
BURN-IN CIRCUIT
AMP03
+18V
–18V
25k⍀25k⍀
25k⍀
SLEW RATE TEST CIRCUIT
AMP03
+15V
–15V
0.1␮F
0.1␮F
V
IN
= ⴞ10V
V
OUT
= ⴞ10V
WARNING!
ESD SENSITIVE DEVICE
AMP03–Typical Performance Characteristics
–4– REV. F
TPC 1. Small Signal Transient
Response
TPC 4. Large Signal Transient
Response
INPUT OFFSET VOLTAGE (␮V)
1000
800
–800
0
–200
–400
–600
600
200
400
TEMPERATURE (ⴗC)
–75 –50 150–25 0 25 75 100 12550
VS = ⴞ15V
TPC 7. Input Offset Voltage vs.
Temperature
FREQUENCY (Hz)
COMMON-MODE REJECTION (dB)
120
0110 1M100 1k 10k 100k
90
40
30
20
10
80
70
50
60
110
100
T
A
= +25ⴗC
V
S
= ⴞ15V
TPC 2. Common-Mode Rejection
vs. Frequency
FREQUENCY (Hz)
POWER SUPPLY REJECTION (dB)
120
0
110 1M100 1k 10k 100k
90
40
30
20
10
80
70
50
60
110
100
T
A
= +25ⴗC
V
S
= ⴞ15V
–PSRR
+PSRR
TPC 5. Power Supply Rejection vs.
Frequency
FREQUENCY (Hz)
CLOSED-LOOP GAIN (dB)
50
40
–30
100 1k 10M10k 100k 1M
10
0
–10
–20
30
20
T
A
= +25°C
V
S
= ⴞ15V
TPC 8. Closed-Loop Gain vs.
Frequency
FREQUENCY (Hz)
THD+N (%)
0.1
0.010
0.0001
20 100 20k
0.001
1k 10k
T
A
= +25ⴗC
V
S
= ⴞ15V
A
V
= –1
R
L
= 600⍀
R
L
= 100k⍀
TPC 3. Total Harmonic Distortion
vs. Frequency
FREQUENCY (Hz)
0.1
0.010
0.0001
2k 50k
0.001
10k
DIM (%)
T
A
= +25ⴗC
V
S
= ⴞ15V
A
V
= –1
R
L
= 600⍀, 100k⍀
TPC 6. Dynamic Intermodulation
Distortion vs. Frequency
FREQUENCY (Hz)
OUTPUT IMPEDANCE (⍀)
10
8
0
100 1k 1M10k 100k
6
4
2
T
A
= +25°C
V
S
= ⴞ15V
TPC 9. Closed-Loop Output
Impedance vs. Frequency
AMP03
–5–
REV. F
TEMPERATURE (ⴗC)
GAIN ERROR (%)
0.003
–75 –50 100–25 0 25 5075
0.002
0.000
–0.001
–0.002
–0.003
0.001
125 150
V
S
= ⴞ15V
R
S
= 0⍀
TPC 10. Gain Error vs. Temperature
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
4
0
0ⴞ5ⴞ20ⴞ10 ⴞ15
2
1
3
T
A
= +25ⴗC
TPC 13. Supply Current vs. Supply
Voltage
FREQUENCY (Hz)
120
100
0
110 10k100 1k
80
60
40
20
T
A
= +25ⴗC
V
S
= ⴞ15V
Hz)
VOLTAGE NOISE DENSITY (nV/
TPC 16. Voltage Noise Density vs.
Frequency
+10␮V
0V
–10␮V
NOTE: EXTERNAL AMPLIFIER GAIN = 1000;
THEREFORE, VERTICAL SCALE = 10␮V/DIV.
TPC 19. Voltage Noise from 0 kHz to 10 kHz
TEMPERATURE (ⴗC)
SLEW RATE (V/␮s)
13
6
–75 –50 125–25 0 25 50 75 100
12
10
9
8
7
11
V
S
= ⴞ15V
R
L
= 2k⍀
TPC 11. Slew Rate vs. Temperature
OUTPUT SOURCE CURRENT (mA)
17.5
0
06 3612 18 24 30
15.0
12.5
10.0
5.0
2.5
7.5
MAXIMUM OUTPUT VOLTAGE (V)
T
A
= +25ⴗC
V
S
= ⴞ18V
V
S
= ⴞ15V
V
S
= ⴞ12V
V
S
= ⴞ9V
V
S
= ⴞ5V
TPC 14. Maximum Output Voltage
vs. Output Current (Source)
+1␮V
0V
–1␮V
0.1 TO 10Hz PEAK-TO-PEAK NOISE
TPC 17. Low Frequency Voltage
Noise
TEMPERATURE (ⴗC)
SUPPLY CURRENT (mA)
6
–75 –50 125–25 0 25 50 75 100
5
3
2
1
0
4
150
V
S
= ⴞ15V
TPC 12. Supply Current vs.
Temperature
OUTPUT SINK CURRENT
(
mA
)
–17.5
0
0–2 –12–4 –6 –8 –10
–15.0
–12.5
–10.0
–5.0
–2.5
–7.5
MAXIMUM OUTPUT VOLTAGE (V)
T
A
= +25ⴗC
V
S
= ⴞ18V
V
S
= ⴞ15V
V
S
= ⴞ12V
V
S
= ⴞ9V
V
S
= ⴞ5V
TPC 15. Maximum Output Voltage
vs. Output Current (Sink)
+10␮V
0V
–10␮V
NOTE: EXTERNAL AMPLIFIER GAIN = 1000;
THEREFORE, VERTICAL SCALE = 10␮V/DIV.
TPC 18. Voltage Noise from 0 kHz
to 1 kHz
AMP03
–6– REV. F
ECM
+V 0.1␮F
0.1␮F
–V
VSIGNAL
GROUND REFERENCE 1 GROUND REFERENCE 2
(GROUND REFERENCE 2)
VOUT = –VSIGNAL
AMP03
Figure 1. AMP03 Serves to Reject Common-Mode Volt-
ages in Instrumentation Systems. Common-Mode Volt-
ages Occur Due to Ground Current Returns. V
SIGNAL
and
E
CM
Must Be within the Common-Mode Range of AMP03.
APPLICATIONS INFORMATION
The AMP03 represents a versatile analog building block. In
order to capitalize on the fast settling time, high slew rate, and
high CMR, proper decoupling and grounding techniques must
be employed. Figure 1 illustrates the use of 0.1 µF decoupling
capacitors and proper ground connections.
MAINTAINING COMMON-MODE REJECTION
In order to achieve the full common-mode rejection capability
of the AMP03, the source impedance must be carefully con-
trolled. Slight imbalances of the source resistance will result in
a degradation of dc CMR—even a 5 Ω imbalance will degrade
CMR by 20 dB. Also, the matching of the reactive source
impedance must be matched in order to preserve the CMRR
over frequency.
APPLICATION CIRCUITS
AMP03
R1
25k⍀
R2
25k⍀
R3
25k⍀
R4
25k⍀
+IN E
2
–IN E
1
E
0
= E
2
– E
1
Figure 2. Precision Difference Amplifier. Rejects
Common-Mode Signal = (E
1
+ E
2
)/2 by 100 dB
AMP03
E
1
E
0
= –E
1
Figure 3. Precision Unity-Gain Inverting Amplifier
AMP03
+15V
–10V OUT
0.1␮F
REF10
+10V OUT
Figure 4.
ⴞ
10 V Precision Voltage Reference
+15V
–5V OUT
0.1␮F
REF10
+5V OUT
AMP03
Figure 5.
ⴞ
5 V Precision Voltage Reference
AMP03
E1
E2
E0 = E1 + E2
Figure 6. Precision Summing Amplifier
AMP03
R2
R1
E1
E2
E0 = (R2/R1+1) E1 = E2
2
Figure 7. Precision Summing Amplifier with Gain
AMP03
–7–
REV. F
System Design Suggested Op Amp
Requirement For A1 and A2
Source Impedance Low, Need Low OP27, OP37
Voltage Noise Performance OP227 (Dual Matched)
OP270 (Dual)
OP271
OP470
OP471
Source Impedance High OP80
(R
S
≥ 15 kΩ). Need Low Current OP41
Noise OP43
OP249
OP97
Require Ultrahigh Input Impedance OP80
OP97
OP41
OP43
Need Wider Bandwidth and High OP42
Speed OP43
OP249
AMP03
OP80EJ
LOAD
I0I0 = (E1 – E2)/R
E1
E2
R
Figure 8. Differential Input Voltage-to-Current Converter
for Low I
OUT
. OP80EJ maintains 250 fA max input current,
allowing I
O
to be less than 1 pA.
AMP03
R2
R2
R1
–IN E
1
+IN E
2
A1
A2
E
0
OUTPUT
E
0
= (1 + 2R2 /R1) (E
2
– E
1
)
Figure 9. Suitable Instrumentation Amplifier Requirements
Can Be Addressed by Using an Input Stage Consisting of A1,
A2, R1, and R2. The following matrix suggests a suitable
amplifier.
AMP03
–8– REV. F
OUTLINE DIMENSIONS
C00249–0–12/03(F)
Revision History
Location Page
12/03—Data Sheet changed from REV. E to REV. F.
Changes to ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Changes to ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
8-Lead Plastic Dual In-Line Package [PDIP]
[P Suffix]
(N-8)
Dimensions shown in inches and (millimeters)
SEATING
PLANE
0.180
(4.57)
MAX
0.150 (3.81)
0.130 (3.30)
0.110 (2.79) 0.060 (1.52)
0.050 (1.27)
0.045 (1.14)
8
14
5
0.295 (7.49)
0.285 (7.24)
0.275 (6.98)
0.100 (2.54)
BSC
0.375 (9.53)
0.365 (9.27)
0.355 (9.02)
0.150 (3.81)
0.135 (3.43)
0.120 (3.05)
0.015 (0.38)
0.010 (0.25)
0.008 (0.20)
0.325 (8.26)
0.310 (7.87)
0.300 (7.62)
0.022 (0.56)
0.018 (0.46)
0.014 (0.36)
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
COMPLIANT TO JEDEC STANDARDS MO-095AA
0.015
(0.38)
MIN
8-Lead Small Outline Package [SOIC]
[S Suffix]
(R-8)
Dimensions shown in millimeters and (inches)
0.25 (0.0098)
0.17 (0.0067)
1.27 (0.0500)
0.40 (0.0157)
0.50 (0.0196)
0.25 (0.0099)
ⴛ 45ⴗ
8ⴗ
0ⴗ
1.75 (0.0688)
1.35 (0.0532)
SEATING
PLANE
0.25 (0.0098)
0.10 (0.0040)
85
41
5.00 (0.1968)
4.80 (0.1890)
4.00 (0.1574)
3.80 (0.1497)
1.27 (0.0500)
BSC
6.20 (0.2440)
5.80 (0.2284)
0.51 (0.0201)
0.31 (0.0122)
COPLANARITY
0.10
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
COMPLIANT TO JEDEC STANDARDS MS-012AA
8-Lead Metal Can [TO-99]
[J Suffix]
(H-08B)
Dimensions shown in inches and (millimeters)
0.2500 (6.35) MIN
0.5000 (12.70)
MIN
0.1850 (4.70)
0.1650 (4.19)
REFERENCE PLANE
0.0500 (1.27) MAX
0.0190 (0.48)
0.0160 (0.41)
0.0210 (0.53)
0.0160 (0.41)
0.0400 (1.02)
0.0100 (0.25)
0.0400 (1.02) MAX
BASE & SEATING PLANE
0.0340 (0.86)
0.0280 (0.71)
0.0450 (1.14)
0.0270 (0.69)
0.1600 (4.06)
0.1400 (3.56)
0.1000 (2.54) BSC
6
28
7
5
4
3
1
0.2000
(5.08)
BSC
0.1000
(2.54)
BSC
45 BSC
0.3700 (9.40)
0.3350 (8.51)
0.3350 (8.51)
0.3050 (7.75)
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETERS DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
COMPLIANT TO JEDEC STANDARDS MO-002AK