AD AMP03GS Precision, unity-gain differential amplifier Datasheet

a
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/ms Typ
Fast Settling (0.01%): 1 ms Typ
Low Cost
APPLICATIONS
Summing Amplifiers
Instrumentation Amplifiers
Balanced Line Receivers
Current-Voltage Conversion
Absolute Value Amplifier
4 mA–20 mA Current Transmitter
Precision Voltage Reference Applications
Lower Cost and Higher Speed Version of INA105
Precision, Unity-Gain
Differential Amplifier
AMP03
FUNCTIONAL BLOCK DIAGRAM
AMP03
25kV
25kV
–IN
2
SENSE
7
+VCC
6
OUTPUT
4
–VEE
1
REFERENCE
25kV
25kV
+IN
5
3
PIN CONNECTIONS
8-Lead Plastic DIP
(P Suffix)
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 serves to both
amplify the difference between two signals and provide 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 addition or subtraction of two signals without using expensive
externally-matched precision resistors. The large commonmode 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 for high speed current
sources, absolute value amplifiers and summing amplifiers than
the INA105.
REFERENCE 1
–IN 2
8 NC
AMP03
7 V+
TOP VIEW
(Not
to
Scale)
6 OUTPUT
3
+IN
V– 4
5 SENSE
NC = NO CONNECT
8-Lead SOIC
(S Suffix)
REFERENCE 1
–IN 2
8 NC
AMP03
7 V+
TOP VIEW
(Not
to
Scale)
3
6 OUTPUT
+IN
5 SENSE
V– 4
NC = NO CONNECT
Header
(J Suffix)
NC
8
REFERENCE 1
7 V+
–IN 2
6 OUTPUT
5 SENSE
+IN 3
4
V–
NC = NO CONNECT
REV. E
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices 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 Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999
AMP03–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS (@ V = 615 V, T = +258C, unless otherwise noted)
S
Parameter
Symbol Conditions
Offset Voltage
Gain Error
VOS
Input Voltage Range
Common-Mode Rejection
Power Supply Rejection Ratio
Output Swing
Short-Circuit Current Limit
IVR
CMR
PSRR
VO
ISC
Small-Signal Bandwidth
(–3 dB)
Slew Rate
Capacitive Load Drive
Capability
Supply Current
RL = 2 kΩ
RL = 2 kΩ
CL
ISY
No Oscillation
No Load
AMP03F
Typ
Max
Min
VCM = 0 V
No Load, VIN = ± 10 V,
RS = 0 Ω
(Note 1)
VCM = ± 10 V
VS = ± 6 V to ± 18 V
RL = 2 kΩ
Output Shorted
to Ground
BW
SR
A
–400
10
400
Min
AMP03B
Typ
Max
–700
0.00004 0.008
± 10
85
± 12
10
± 12
+45/–15
6
700
–750
0.00004 0.008
± 10
80
100
0.6
± 13.7
20
95
0.6
± 13.7
300
2.5
± 12
+45/–15
300
2.5
3.5
µV
750
95
0.7 10
± 13.7
10
3
9.5
6
25
Units
0.001 0.008
± 10
80
+45/–15
3
9.5
AMP03G
Typ Max
Min
6
mA
3
9.5
MHz
V/µs
300
2.5
3.5
%
V
dB
µV/V
V
3.5
pF
mA
NOTES
1
Input voltage range guaranteed by CMR test.
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICS (@ V = 615 V, –558C ≤ T ≤ +1258C for B Grade)
S
A
Parameter
Symbol
Conditions
Min
Offset Voltage
Gain Error
Input Voltage Range
Common-Mode Rejection
Power Supply Rejection
Ratio
Output Swing
Slew Rate
Supply Current
VOS
VCM = 0 V
No Load, VIN = ± 10 V, RS = 0 Ω
–1500
IVR
CMR
VCM = ± 10 V
PSRR
VO
SR
ISY
VS = ± 6 V to ± 18 V
RL = 2 kΩ
RL = 2 kΩ
No Load
AMP03B
Typ
± 20
75
± 12
150
0.0014
Max
Units
1500
0.02
µV
%
V
dB
20
µV/V
V
V/µs
mA
95
0.7
± 13.7
9.5
3.0
4.0
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICS (@ V = 615 V, –408C ≤ T ≤ +858C for F and G Grades)
S
A
AMP03F
Typ
Max
Parameter
Symbol
Conditions
Min
Offset Voltage
Gain Error
Input Voltage Range
Common-Mode Rejection
Power Supply Rejection
Ratio
Output Swing
Slew Rate
Supply Current
VOS
VCM = 0 V
No Load, VIN = ± 10 V, RS = 0 Ω
–1000 100
1000
0.0008 0.015
± 20
80
95
IVR
CMR
VCM = ± 10 V
PSRR
VO
SR
ISY
VS = ± 6 V to ± 18 V
RL = 2 kΩ
RL = 2 kΩ
No Load
± 12
0.7
± 13.7
9.5
2.6
Min
–2000 200
0.002
± 20
75
90
15
± 12
4.0
AMP03G
Typ
Max
1.0
± 13.7
9.5
2.6
Units
2000
0.02
µV
%
V
dB
15
µV/V
V
V/µs
mA
4.0
Specifications subject to change without notice.
–2–
REV. E
AMP03
WAFER TEST LIMITS (@ V = 615 V, T = +258C, unless otherwise noted)
S
A
AMP03BC
Limit
Parameter
Symbol
Conditions
Offset Voltage
Gain Error
Input Voltage Range
Common-Mode Rejection
Power Supply Rejection Ratio
Output Swing
Short-Circuit Current Limit
Supply Current
VOS
VS = ± 18 V
No Load, VIN = ± 10 V, RS = 0 Ω
IVR
CMR
PSRR
VO
ISC
ISY
VCM = ± 10 V
VS = ± 6 V to ± 18 V
RL = 2 kΩ
Output Shorted to Ground
No Load
Units
0.5
0.008
± 10
80
8
± 12
+45/–15
3.5
mV max
% max
V min
dB min
µV/V max
V max
mA min
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 Voltage2 . . . . . . . . . . . . . . . . . . . . . . . . . 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
uJA3
uJC
Units
Header (J)
8-Lead Plastic DIP (P)
8-Lead SOIC (S)
150
103
155
18
43
40
°C/W
°C/W
°C/W
DICE CHARACTERISTICS
1.
2.
3.
4.
5.
6.
7.
8.
Reference
–IN
+IN
V–
SENSE
OUTPUT
V+
NC
DIE SIZE 0.076 3 0.076 inch, 5,776 sq. mils
(1.93 3 1.93 mm, 3.73 sq. mm)
BURN-IN CIRCUIT
+18V
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
θJA is specified for worst case mounting conditions, i.e., θJA is specified for device
in socket for header and plastic DIP packages and for device soldered to printed
circuit board for SOIC package.
AMP03
25kV
25kV
25kV
ORDERING GUIDE1
Model
AMP03GP
AMP03BJ
AMP03FJ
AMP03BJ/883C
AMP03GS
AMP03GS-REEL
5962-9563901MGA
AMP03GBC
Temperature
Range
Package
Description
Package
Option2
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–55°C to +125°C
–40°C to +85°C
–40°C to +85°C
–55°C to +125°C
8-Lead Plastic DIP
Header
Header
Header
8-Lead SOIC
8-Lead SOIC
Header
Die
N-8
H-08B
H-08B
H-08B
SO-8
SO-8
H-08B
–18V
SLEW RATE TEST CIRCUIT
+15V
AMP03
VOUT = 610V
VIN = 610V
NOTES
1
Burn-in is available on commercial and industrial temperature range parts in
plastic DIP and header packages.
2
For devices processed in total compliance to MIL-STD-883, add /883 after
part number. Consult factory for /883 data sheet.
0.1mF
–15V
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.
REV. E
0.1mF
–3–
WARNING!
ESD SENSITIVE DEVICE
AMP03–Typical Performance Characteristics
0.1
TA = +258C
VS = 615V
110
100
TA = +258C
VS = 615V
AV = –1
90
80
0.010
THD+N – %
COMMON-MODE REJECTION – dB
120
70
60
50
40
RL = 600V
0.001
30
RL = 100kV
20
10
0
Figure 1. Small Signal Transient
Response
1
10
100
1k
10k
FREQUENCY – Hz
100k
1M
Figure 2. Common-Mode Rejection
vs. Frequency
0.0001
20
10k 20k
Figure 3. Total Harmonic Distortion
vs. Frequency
120
0.1
TA = +258C
VS = 615V
110
100
TA = +258C
VS = 615V
AV = –1
90
–PSRR
80
0.010
70
DIM – %
POWER SUPPLY REJECTION – dB
100
1k
FREQUENCY – Hz
60
50
+PSRR
40
RL = 600V, 100kV
0.001
30
20
10
0
1
Figure 4. Large Signal Transient
Response
100k
1M
40
600
400
200
0
–200
–400
–600
10k
FREQUENCY – Hz
50k
Figure 6. Dynamic Intermodulation
Distortion vs. Frequency
TA = +25°C
VS = 615V
TA = +25°C
VS = 615V
OUTPUT IMPEDANCE – V
800
0.0001
2k
10
50
VS = 615V
–800
–75 –50 –25
100
1k
10k
FREQUENCY – Hz
Figure 5. Power Supply Rejection
vs. Frequency
CLOSED-LOOP GAIN – dB
INPUT OFFSET VOLTAGE – mV
1000
10
30
20
10
0
–10
8
6
4
2
–20
0 25 50 75 100 125 150
TEMPERATURE – 8C
Figure 7. Input Offset Voltage vs.
Temperature
–30
100
0
1k
10k
100k
FREQUENCY – Hz
1M
10M
Figure 8. Closed-Loop Gain vs.
Frequency
–4–
100
1k
10k
100k
FREQUENCY – Hz
1M
Figure 9. Closed-Loop Output Impedance vs. Frequency
REV. E
AMP03
13
VS = 615V
RS = 0V
SLEW RATE – V/ms
GAIN ERROR – %
0.001
0.000
–0.001
–0.002
8
MAXIMUM OUTPUT VOLTAGE – Volts
3
2
1
65
610
615
SUPPLY VOLTAGE – Volts
620
Figure 13. Supply Current vs. Supply
Voltage
120
4
3
2
1
0
–75 –50 –25
100 125
0
25 50 75 100 125 150
TEMPERATURE – 8C
Figure 12. Supply Current vs.
Temperature
–17.5
17.5
TA = +258C
SUPPLY CURRENT – mA
9
Figure 11. Slew Rate vs. Temperature
4
VOLTAGE NOISE DENSITY – nV/ Hz
10
6
–75 –50 –25
0
25
50 75
TEMPERATURE – 8C
0
25 50 75 100 125 150
TEMPERATURE – 8C
Figure 10. Gain Error vs. Temperature
0
11
7
–0.003
–75 –50 –25
0
VS = 615V
5
SUPPLY CURRENT – mA
12
0.002
6
VS = 615V
RL = 2kV
VS = 618V
15.0
TA = +258C
VS = 615V
12.5
10.0
VS = 612V
7.5
VS = 69V
5.0
VS = 65V
2.5
MAXIMUM OUTPUT VOLTAGE – Volts
0.003
VS = 618V
–15.0
VS = 615V
–12.5
–10.0
VS = 612V
–7.5
VS = 69V
–5.0
VS = 65V
–2.5
TA = +258C
0
0
0
6
12
18
24
30
OUTPUT SOURCE CURRENT – mA
0
36
Figure 14. Maximum Output Voltage
vs. Output Current (Source)
–2
–4
–6
–10
–8
OUTPUT SINK CURRENT – mA
–12
Figure 15. Maximum Output Voltage
vs. Output Current (Sink)
TA = +258C
VS = 615V
100
80
60
+1mV
+10mV
0V
0V
–1mV
–10mV
40
20
0
1
10
100
1k
FREQUENCY – Hz
10k
Figure 16. Voltage Noise Density vs.
Frequency
NOTE: EXTERNAL AMPLIFIER GAIN = 1000;
THEREFORE, VERTICAL SCALE = 10mV/DIV.
0.1 TO 10Hz PEAK-TO-PEAK NOISE
Figure 17. Low Frequency Voltage
Noise
Figure 18. Voltage Noise from 0 kHz
to 1 kHz
+10mV
0V
–10mV
NOTE: EXTERNAL AMPLIFIER GAIN = 1000;
THEREFORE, VERTICAL SCALE = 10mV/DIV.
Figure 19. Voltage Noise from 0 kHz to 10 kHz
REV. E
–5–
AMP03
+V
APPLICATIONS INFORMATION
0.1mF
The AMP03 represents a versatile analog building block. In
order to capitalize on fast settling time, high slew rate and high
CMR, proper decoupling and grounding techniques must be
employed. Figure 20 illustrates the use of 0.1 µF decoupling
capacitors and proper ground connections.
(GROUND REFERENCE 2)
AMP03
VOUT = –VSIGNAL
VSIGNAL
–V
ECM
MAINTAINING COMMON-MODE REJECTION
0.1mF
GROUND REFERENCE 1
In order to achieve the full common-mode rejection capability
of the AMP03, the source impedance must be carefully controlled. 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.
GROUND REFERENCE 2
Figure 20. AMP03 Serves to Reject Common-Mode Voltages in Instrumentation Systems. Common-Mode Voltages Occur Due to Ground Current Returns. VSIGNAL and
ECM Must Be Within the Common-Mode Range of AMP03.
APPLICATION CIRCUITS
+15V
0.1mF
AMP03
R1
25kV
R2
25kV
REF10
+5V OUT
–IN E1
E0 = E2 –E1
AMP03
–5V OUT
+IN E2
R3
25kV
R4
25kV
Figure 21. Precision Difference Amplifier. Rejects
Common-Mode Signal = (E1 + E2)/2 by 100 dB
Figure 24. 65 V Precision Voltage Reference
AMP03
E1
AMP03
E0 = –E1
E0 = E1 + E2
E1
E2
Figure 22. Precision Unity-Gain Inverting Amplifier
Figure 25. Precision Summing Amplifier
+15V
R1
0.1mF
R2
+10V OUT
REF10
AMP03
AMP03
–10V OUT
E1
E0 = (R2 /R1 +1)
E1 = E2
2
E2
Figure 23. 610 V Precision Voltage Reference
Figure 26. Precision Summing Amplifier with Gain
–6–
REV. E
AMP03
AMP03
E2
R
System Design
Requirement
Suggested Op Amp
For A1 and A2
Source Impedance Low, Need Low
Voltage Noise Performance
OP27, OP37
OP227 (Dual Matched)
OP270 (Dual)
OP271
OP470
OP471
Source Impedance High
(RS ≥ 15 kΩ). Need Low Current
Noise
OP80
OP41
OP43
OP249
OP97
Require Ultrahigh Input Impedance
OP80
OP97
OP41
OP43
Need Wider Bandwidth and High
Speed
OP42
OP43
OP249
E1
OP80EJ
I 0 = (E1 – E2 )/R
I0
LOAD
Figure 27. Differential Input Voltage-to-Current Converter
for Low IOUT. OP80EJ Maintains 250 fA Max Input Current,
Allowing IO to Be Less Than 1 pA
AMP03
–IN E1
A1
R2
R1
E0 OUTPUT
R2
A2
+IN E2
E0 = (1 + 2R2 /R1) (E2 – E1)
Figure 28. 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.
REV. E
–7–
AMP03
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
C3154e–0–8/99
8-Lead Plastic DIP
(N-8)
0.430 (10.92)
0.348 (8.84)
8
5
1
PIN 1
0.280 (7.11)
0.240 (6.10)
4
0.100 (2.54)
BSC
0.210
(5.33)
MAX
0.325 (8.25)
0.300 (7.62)
0.060 (1.52)
0.015 (0.38)
0.195 (4.95)
0.115 (2.93)
0.130
(3.30)
MIN
0.160 (4.06)
0.115 (2.93)
0.015 (0.381)
0.008 (0.204)
0.022 (0.558) 0.070 (1.77) SEATING
0.014 (0.356) 0.045 (1.15) PLANE
8-Lead SOIC
(SO-8)
0.1968 (5.00)
0.1890 (4.80)
0.1574 (4.00)
0.1497 (3.80)
8
5
1
4
0.2440 (6.20)
0.2284 (5.80)
PIN 1
0.0196 (0.50)
3 458
0.0099 (0.25)
0.0500 (1.27)
BSC
0.0098 (0.25)
0.0040 (0.10)
SEATING
PLANE
0.0688 (1.75)
0.0532 (1.35)
88
0.0500 (1.27)
0.0098 (0.25) 08
0.0160 (0.41)
0.0075 (0.19)
0.0192 (0.49)
0.0138 (0.35)
8-Lead Metal Can
(H-08B)
0.185 (4.70)
0.165 (4.19)
REFERENCE PLANE
0.750 (19.05)
0.500 (12.70)
0.250 (6.35) MIN 0.100 (2.54) BSC
0.160 (4.06)
0.110 (2.79)
0.050 (1.27) MAX
5
0.040 (1.02) MAX
0.045 (1.14)
0.010 (0.25)
0.200
(5.08)
BSC
6
3
7
2
0.100
(2.54)
BSC
0.019 (0.48)
0.016 (0.41)
0.021 (0.53)
0.016 (0.41)
0.045 (1.14)
0.027 (0.69)
PRINTED IN U.S.A.
0.370 (9.40)
0.335 (8.51)
0.335 (8.51)
0.305 (7.75)
4
8
1
0.034 (0.86)
0.027 (0.69)
45° BSC
BASE & SEATING PLANE
–8–
REV. E