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®
INA117
INA117
INA117
High Common-Mode Voltage
DIFFERENCE AMPLIFIER
FEATURES
q COMMON-MODE INPUT RANGE:
±200V (VS = ±15V)
q PROTECTED INPUTS:
±500V Common-Mode
±500V Differential
q UNITY GAIN: 0.02% Gain Error max
q NONLINEARITY: 0.001% max
q CMRR: 86dB min
APPLICATIONS
q CURRENT MONITOR
q BATTERY CELL-VOLTAGE MONITOR
q GROUND BREAKER
q INPUT PROTECTION
q SIGNAL ACQUISITION IN NOISY
ENVIRONMENTS
q FACTORY AUTOMATION
DESCRIPTION
The INA117 is a precision unity-gain difference
amplifier with very high common-mode input voltage
range. It is a single monolithic IC consisting of a
precision op amp and integrated thin-film resistor
network. It can accurately measure small differential
voltages in the presence of common-mode signals up
to ±200V. The INA117 inputs are protected from
momentary common-mode or differential overloads
up to ±500V.
In many applications, where galvanic isolation is not
essential, the INA117 can replace isolation amplifiers.
This can eliminate costly isolated input-side power
supplies and their associated ripple, noise and quies-
cent current. The INA117’s 0.001% nonlinearity and
200kHz bandwidth are superior to those of conven-
tional isolation amplifiers.
The INA117 is available in 8-pin plastic mini-DIP and
SO-8 surface-mount packages, specified for the –40°C
to +85°C temperature range. The metal TO-99 models
are available specified for the –40°C to +85°C and
–55°C to +125°C temperature range.
21.11k
RefB 1
380k
–In 2
380k
+In 3
V– 4
380k
20k
8 Comp
7 V+
6 VO
5 RefA
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1987 Burr-Brown Corporation
PDS-748G
Printed in U.S.A. August, 1999

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SPECIFICATIONS
ELECTRICAL
At TA = +25°C, VS = ±15V, unless otherwise noted.
INA117AM, SM
INA117BM
INA117P, KU
PARAMETER
CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
GAIN
Initial (1)
Error
vs Temperature
Nonlinearity (2)
OUTPUT
Rated Voltage
Rated Current
Impedance
Current Limit
Capacitive Load
IO = +20mA, –5mA
VO = 10V
To Common
Stable Operation
INPUT
Impedance
Voltage Range
Common-Mode Rejection (3)
DC
AC, 60Hz
vs Temperature, DC
AM, BM, P, KU
SM
Differential
Common-Mode
Differential
Common-Mode, Continuous
VCM = 400Vp-p
TA = TMIN to TMAX
OFFSET VOLTAGE
Initial
KU Grade (SO-8 Package)
vs Temperature
vs Supply
vs Time
RTO (4)
TA = TMIN to TMAX
VS = ±5V to ±18V
OUTPUT NOISE VOLTAGE
fB = 0.01Hz to 10Hz
fB = 10kHz
DYNAMIC RESPONSE
Gain Bandwidth, –3dB
Full Power Bandwidth
Slew Rate
Settling Time: 0.1%
0.01%
0.01%
POWER SUPPLY
Rated
Voltage Range
Quiescent Current
TEMPERATURE RANGE
Specification: AM, BM, P, KU
SM
Operation
Storage
RTO (5)
VO = 20Vp-p
VO = 10V Step
VO = 10V Step
VCM = 10V Step, VDIFF = 0V
Derated Performance
VO = 0V
1
0.01
2
0.0002
0.05
10
0.001
10 12
+20, –5
0.01
+49, –13
1000
±10
±200
70
66
66
60
800
400
80
80
75
75
120 1000
8.5 40
74 90
200
25
550
200
30
2 2.6
6.5
10
4.5
±15
±5 ±18
1.5 2
–25 +85
–55 +125
–55 +125
–65 +150
T
T
T
86
66
80
80
T
T
T
T
T
T
T
T 0.02
T
TT
T V/V
TT
%
T ppm/°C
TT
%
T TT
V
T mA
T T
T T mA
T T pF
T T k
T T k
T TV
TV
94 T T dB
94 T T dB
90 T dB
dB
T 1000
T 20
TT
T
TT
µV
600 2000
µV
T µV/°C
T dB
T µV/mo
T T µVp-p
T T nV/Hz
T T kHz
T kHz
T
TT
V/µs
T T µs
T T µs
T T µs
T TV
TT
TV
TT
T T mA
T –40
T –40
T –55
+85
+85
+125
°C
°C
°C
°C
TSpecification same as for INA117AM.
NOTES: (1) Connected as difference amplifier (see Figure 1). (2) Nonlinearity is the maximum peak deviation from the best-fit straight line as a percent of full-scale
peak-to-peak output. (3) With zero source impedance (see discussion of common-mode rejection in Application Information section). (4) Includes effects of amplifier’s
input bias and offset currents. (5) Includes effects of amplifier’s input current noise and thermal noise contribution of resistor network.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
INA117
2

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PIN CONFIGURATION
Top View
Ref B
1
TO-99
Tab INA117AM, BM, SM
Comp
8
V+
7
–In 2
6 Output
3
+In
5
Ref A
4
V–
Case internally connected to V–. Make no connection.
Top View
RefB 1
–In 2
+In 3
V– 4
DIP/SOIC
INA117P, KU
8 Comp
7 V+
6 Output
5 RefA
ABSOLUTE MAXIMUM RATINGS
Supply Voltage .................................................................................. ±22V
Input Voltage Range, Continuous ................................................... ±200V
Common-Mode and Differential, 10s ........................................... ±500V
Operating Temperature
M Metal TO-99 ................................................................ –55 to +125°C
P Plastic DIP and U SO-8 ................................................ –40 to +85°C
Storage Temperature
M Package ....................................................................... –65 to +150°C
P Plastic DIP and U SO-8 .............................................. –55 to +125°C
Lead Temperature (soldering, 10s) ............................................... +300°C
Output Short Circuit to Common ............................................ Continuous
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degrada-
tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.
PACKAGE/ORDERING INFORMATION
PRODUCT
INA117P
INA117KU
INA117AM
INA117BM
INA117SM
PACKAGE
8-Pin Plastic DIP
SO-8 Surface-Mount
TO-99 Metal
"
"
PACKAGE
DRAWING
NUMBER(1)
006
182
001
"
"
SPECIFIED
TEMPERATURE
RANGE
–40°C to +85°C
"
–25°C to +85°C
"
–55°C to +125°C
PACKAGE
MARKING
ORDERING
NUMBER(2)
TRANSPORT
MEDIA
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/)
are available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “INA117KU/2K5” will get a
single 2500-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.
®
3 INA117

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TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = ±15V, unless otherwise noted.
COMMON-MODE REJECTION vs FREQUENCY
100
INA117BM
90
80
INA117AM, SM, P, KU
70
60
50
40
20
100
1k 10k
Frequency (Hz)
100k
2M
POWER SUPPLY REJECTION vs FREQUENCY
100
90
V–
80
V+
70
60
50
40
1
10 100
Frequency (Hz)
1k
10k
POSITIVE COMMON-MODE VOLTAGE RANGE
vs POSITIVE POWER SUPPLY VOLTAGE
400
TA = –55°C
350
300 TA = +25°C
250 Max Rating = 200V
TA = +125°C
200
150
–VS = –5V to –20V
100
50
5
10 15
Positive Power Supply Voltage (V)
20
–400
NEGATIVE COMMON-MODE VOLTAGE RANGE
vs NEGATIVE POWER SUPPLY VOLTAGE
–350
–300
–250 Max Rating = –200V
–200
TA = +25°C
TA = –55°C to +125°C
–150
–100
+VS = +5V to +20V
–50
–5
–10 –15
Negative Power Supply Voltage (V)
–20
®
INA117
4

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TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.
SMALL SIGNAL STEP RESPONSE
CL = 0
SMALL SIGNAL STEP RESPONSE
CL = 1000pF
LARGE SIGNAL STEP RESPONSE
®
5 INA117