AD AMP03 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/␮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
4 to 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
25k⍀
25k⍀
–IN
2
SENSE
7
+VCC
6
OUTPUT
4
–VEE
1
REFERENCE
25k⍀
25k⍀
+IN
5
3
PIN CONNECTIONS
8-Lead PDIP
(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 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 addition 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.
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. F
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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
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.
AMP03–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS (@ V = ⴞ15 V, T = +25ⴗC, 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
BW
SR
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
RL = 2 kΩ
RL = 2 kΩ
CL
ISY
No Oscillation
No Load
A
Min
AMP03F
Typ
Max
–400
+10
Min
AMP03B
AMP03G
Typ
Max Min
Typ Max
+400 –700
0.00004 0.008
± 20
85
± 12
10
± 12
+45/–15
6
+700 –750
95
0.6
± 13.7
10
± 12
300
2.5
+45/–15
3
9.5
6
300
2.5
3.5
0.001 0.008 %
V
95
dB
0.7
10
µV/V
± 13.7
V
± 20
80
+45/–15
3
9.5
+750 µV
+25
0.00004 0.008
± 20
80
100
0.6
± 13.7
+20
mA
MHz
V/µs
3
9.5
6
300
2.5
3.5
Unit
3.5
pF
mA
NOTES
1
Input voltage range guaranteed by CMR test.
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICS (@ V = ⴞ15 V, –55ⴗC ≤ T ≤ +125ⴗC 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
Unit
+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 = ⴞ15 V, –40ⴗC ≤ T ≤ +85ⴗC 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
Unit
+2000 µV
0.02
%
V
dB
15
4.0
µV/V
V
V/µs
mA
Specifications subject to change without notice.
–2–
REV. F
AMP03
WAFER TEST LIMITS (@ V = ⴞ15 V, T = 25ⴗC, unless otherwise noted.)*
S
A
AMP03GBC
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
Unit
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
DICE CHARACTERISTICS
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
␪JA3
␪JC
Unit
Header (J)
8-Lead PDIP (P)
8-Lead SOIC (S)
150
103
155
18
43
40
°C/W
°C/W
°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
θJA is specified for worst-case mounting conditions, i.e., θJA is specified for device
in socket for header and PDIP packages and for device soldered to printed circuit
board for SOIC package.
1.
2.
3.
4.
5.
6.
7.
8.
REFERENCE
–IN
+IN
–VEE
SENSE
OUTPUT
+VCC
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
+18V
AMP03
25k⍀
25k⍀
25k⍀
ORDERING GUIDE
Model1
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 PDIP
Header
Header
Header
8-Lead SOIC
8-Lead SOIC
Header
Die
P-8
H-08B
H-08B
H-08B
S-8
S-8
H-08B
–18V
SLEW RATE TEST CIRCUIT
+15V
0.1␮F
AMP03
VOUT = ⴞ10V
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.
VIN = ⴞ10V
0.1␮F
–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. F
–3–
WARNING!
ESD SENSITIVE DEVICE
AMP03–Typical Performance Characteristics
120
100
TA = +25ⴗC
VS = ⴞ15V
AV = –1
90
80
0.010
THD+N (%)
COMMON-MODE REJECTION (dB)
0.1
TA = +25ⴗC
VS = ⴞ15V
110
70
60
50
40
RL = 600⍀
0.001
30
RL = 100k⍀
20
10
0
TPC 1. Small Signal Transient
Response
1
10
100
1k
10k
FREQUENCY (Hz)
100k
1M
0.0001
20
TPC 2. Common-Mode Rejection
vs. Frequency
10k 20k
TPC 3. Total Harmonic Distortion
vs. Frequency
0.1
120
TA = +25ⴗC
VS = ⴞ15V
110
100
TA = +25ⴗC
VS = ⴞ15V
AV = –1
90
–PSRR
80
0.010
70
DIM (%)
POWER SUPPLY REJECTION (dB)
100
1k
FREQUENCY (Hz)
60
50
+PSRR
40
RL = 600⍀, 100k⍀
0.001
30
20
10
0
1
TPC 4. Large Signal Transient
Response
1M
0.0001
2k
40
CLOSED-LOOP GAIN (dB)
600
400
200
0
–200
–400
–600
10k
FREQUENCY (Hz)
50k
TPC 6. Dynamic Intermodulation
Distortion vs. Frequency
10
50
800
INPUT OFFSET VOLTAGE (␮V)
100k
TPC 5. Power Supply Rejection vs.
Frequency
VS = ⴞ15V
–800
–75 –50 –25
100
1k
10k
FREQUENCY (Hz)
TA = +25°C
VS = ⴞ15V
TA = +25°C
VS = ⴞ15V
8
OUTPUT IMPEDANCE (⍀)
1000
10
30
20
10
0
–10
6
4
2
–20
0 25 50 75 100 125 150
TEMPERATURE (ⴗC)
TPC 7. Input Offset Voltage vs.
Temperature
–30
100
0
1k
10k
100k
FREQUENCY (Hz)
1M
TPC 8. Closed-Loop Gain vs.
Frequency
–4–
10M
100
1k
10k
100k
FREQUENCY (Hz)
1M
TPC 9. Closed-Loop Output
Impedance vs. Frequency
REV. F
AMP03
13
VS = ⴞ15V
RS = 0⍀
SLEW RATE (V/␮s)
GAIN ERROR (%)
0.001
0.000
–0.001
–0.002
10
9
8
MAXIMUM OUTPUT VOLTAGE (V)
3
2
1
2
0
25 50 75 100 125 150
TEMPERATURE (ⴗC)
TPC 12. Supply Current vs.
Temperature
–17.5
17.5
TA = +25ⴗC
3
0
–75 –50 –25
100 125
TPC 11. Slew Rate vs. Temperature
4
4
1
6
–75 –50 –25
0
25
50 75
TEMPERATURE (ⴗC)
0
25 50 75 100 125 150
TEMPERATURE (ⴗC)
TPC 10. Gain Error vs. Temperature
SUPPLY CURRENT (mA)
11
7
–0.003
–75 –50 –25
VS = ⴞ18V
15.0
TA = +25ⴗC
VS = ⴞ15V
12.5
10.0
VS = ⴞ12V
7.5
VS = ⴞ9V
5.0
VS = ⴞ5V
2.5
VS = ⴞ18V
–15.0
VS = ⴞ15V
–12.5
–10.0
VS = ⴞ12V
–7.5
VS = ⴞ9V
–5.0
VS = ⴞ5V
–2.5
TA = +25ⴗC
0
0
ⴞ5
ⴞ10
ⴞ15
SUPPLY VOLTAGE (V)
ⴞ20
TPC 13. Supply Current vs. Supply
Voltage
120
VOLTAGE NOISE DENSITY (nV/ Hz)
VS = ⴞ15V
5
SUPPLY CURRENT (mA)
12
0.002
6
VS = ⴞ15V
RL = 2k⍀
MAXIMUM OUTPUT VOLTAGE (V)
0.003
0
0
0
6
12
18
24
30
OUTPUT SOURCE CURRENT (mA)
36
TPC 14. Maximum Output Voltage
vs. Output Current (Source)
0
–2
–4
–6
–10
–8
OUTPUT SINK CURRENT (mA)
–12
TPC 15. Maximum Output Voltage
vs. Output Current (Sink)
TA = +25ⴗC
VS = ⴞ15V
100
80
60
+1␮V
+10␮V
0V
0V
–1␮V
–10␮V
40
20
0
1
10
100
1k
FREQUENCY (Hz)
10k
TPC 16. Voltage Noise Density vs.
Frequency
NOTE: EXTERNAL AMPLIFIER GAIN = 1000;
THEREFORE, VERTICAL SCALE = 10␮V/DIV.
0.1 TO 10Hz PEAK-TO-PEAK NOISE
TPC 18. Voltage Noise from 0 kHz
to 1 kHz
TPC 17. Low Frequency Voltage
Noise
+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
REV. F
–5–
AMP03
+V
APPLICATIONS INFORMATION
0.1␮F
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.
(GROUND REFERENCE 2)
AMP03
VOUT = –VSIGNAL
VSIGNAL
–V
ECM
MAINTAINING COMMON-MODE REJECTION
0.1␮F
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 1. 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
0.1␮F
AMP03
R1
25k⍀
R2
25k⍀
REF10
+5V OUT
–IN E1
E0 = E2 – E1
AMP03
–5V OUT
+IN E2
R3
25k⍀
R4
25k⍀
Figure 2. Precision Difference Amplifier. Rejects
Common-Mode Signal = (E1 + E2)/2 by 100 dB
Figure 5. ⴞ5 V Precision Voltage Reference
AMP03
E1
E0 = –E1
AMP03
E0 = E1 + E2
E1
E2
Figure 3. Precision Unity-Gain Inverting Amplifier
Figure 6. Precision Summing Amplifier
+15V
0.1␮F
R1
R2
+10V OUT
REF10
AMP03
–10V OUT
AMP03
E1
E = E2
E0 = (R2/R1+1) 1
2
E2
Figure 4. ⴞ10 V Precision Voltage Reference
Figure 7. Precision Summing Amplifier with Gain
–6–
REV. F
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 8. 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 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.
REV. F
–7–
AMP03
OUTLINE DIMENSIONS
8-Lead Small Outline Package [SOIC]
[S Suffix]
(R-8)
8-Lead Plastic Dual In-Line Package [PDIP]
[P Suffix]
(N-8)
5.00 (0.1968)
4.80 (0.1890)
0.375 (9.53)
0.365 (9.27)
0.355 (9.02)
8
5
1
4
0.150 (3.81)
0.130 (3.30)
0.110 (2.79)
0.022 (0.56)
0.018 (0.46)
0.014 (0.36)
4.00 (0.1574)
3.80 (0.1497)
0.295 (7.49)
0.285 (7.24)
0.275 (6.98)
0.325 (8.26)
0.310 (7.87)
0.300 (7.62)
0.100 (2.54)
BSC
0.180
(4.57)
MAX
C00249–0–12/03(F)
Dimensions shown in millimeters and (inches)
Dimensions shown in inches and (millimeters)
0.015
(0.38)
MIN
5
1
4
6.20 (0.2440)
5.80 (0.2284)
1.27 (0.0500)
BSC
0.150 (3.81)
0.135 (3.43)
0.120 (3.05)
0.25 (0.0098)
0.10 (0.0040)
COPLANARITY
SEATING
0.10
PLANE
0.015 (0.38)
0.010 (0.25)
0.008 (0.20)
SEATING
PLANE
0.060 (1.52)
0.050 (1.27)
0.045 (1.14)
8
1.75 (0.0688)
1.35 (0.0532)
0.51 (0.0201)
0.31 (0.0122)
0.50 (0.0196)
ⴛ 45ⴗ
0.25 (0.0099)
8ⴗ
0.25 (0.0098) 0ⴗ 1.27 (0.0500)
0.40 (0.0157)
0.17 (0.0067)
COMPLIANT TO JEDEC STANDARDS MS-012AA
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 MO-095AA
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
8-Lead Metal Can [TO-99]
[J Suffix]
(H-08B)
Dimensions shown in inches and (millimeters)
REFERENCE PLANE
0.1850 (4.70)
0.1650 (4.19)
0.5000 (12.70)
MIN
0.2500 (6.35) MIN
0.1000 (2.54) BSC
0.1600 (4.06)
0.1400 (3.56)
0.0500 (1.27) MAX
0.3700 (9.40)
0.3350 (8.51)
0.3350 (8.51)
0.3050 (7.75)
5
0.0400 (1.02) MAX
6
4
0.2000
(5.08)
BSC
3
7
2
0.1000
(2.54)
BSC
0.0190 (0.48)
0.0160 (0.41)
0.0400 (1.02)
0.0100 (0.25)
0.0210 (0.53)
0.0160 (0.41)
0.0450 (1.14)
0.0270 (0.69)
8
1
0.0340 (0.86)
0.0280 (0.71)
45 BSC
BASE & SEATING PLANE
COMPLIANT TO JEDEC STANDARDS MO-002AK
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
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–
REV. F