INA117
FEATURES
q
COMMON-MODE INPUT RANGE:
200V (V
S
=
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.
High Common-Mode Voltage
DIFFERENCE AMPLIFIER
Ref
B
In
+In
V
Comp
V+
V
O
Ref
A
1
2
3
4
8
7
6
5
21.11k
380k
380k
380k
20k
INA11
7
INA117
www.ti.com
Copyright 2000, Texas Instruments Incorporated
SBOS154A
Printed in U.S.A. December, 2000
INA117
SBOS154A
2
SPECIFICATIONS
At T
A
= +25
C, V
S
=
15V, unless otherwise noted.
INA117AM, SM
INA117BM
INA117P, KU
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
GAIN
Initial
(1)
1
V/V
Error
0.01
0.05
0.02
%
vs Temperature
2
10
ppm/
C
Nonlinearity
(2)
0.0002
0.001
%
OUTPUT
Rated Voltage
I
O
= +20mA, 5mA
10
12
V
Rated Current
V
O
= 10V
+20, 5
mA
Impedance
0.01
Current Limit
To Common
+49, 13
mA
Capacitive Load
Stable Operation
1000
pF
INPUT
Impedance
Differential
800
k
Common-Mode
400
k
Voltage Range
Differential
10
V
Common-Mode, Continuous
200
V
Common-Mode Rejection
(3)
DC
70
80
86
94
dB
AC, 60Hz
V
CM
= 400Vp-p
66
80
66
94
dB
vs Temperature, DC
T
A
= T
MIN
to T
MAX
AM, BM, P, KU
66
75
80
90
dB
SM
60
75
dB
OFFSET VOLTAGE
RTO
(4)
Initial
120
1000
1000
V
KU Grade (SO-8 Package)
600
2000
V
vs Temperature
T
A
= T
MIN
to T
MAX
8.5
40
40
V/
C
vs Supply
V
S
=
5V to
18V
74
90
80
dB
vs Time
200
V/mo
OUTPUT NOISE VOLTAGE
RTO
(5)
f
B
= 0.01Hz to 10Hz
25
Vp-p
f
B
= 10kHz
550
nV/
Hz
DYNAMIC RESPONSE
Gain Bandwidth, 3dB
200
kHz
Full Power Bandwidth
V
O
= 20Vp-p
30
kHz
Slew Rate
2
2.6
V/
s
Settling Time: 0.1%
V
O
= 10V Step
6.5
s
0.01%
V
O
= 10V Step
10
s
0.01%
V
CM
= 10V Step, V
DIFF
= 0V
4.5
s
POWER SUPPLY
Rated
15
V
Voltage Range
Derated Performance
5
18
V
Quiescent Current
V
O
= 0V
1.5
2
mA
TEMPERATURE RANGE
Specification: AM, BM, P, KU
25
+85
40
+85
C
SM
55
+125
C
Operation
55
+125
40
+85
C
Storage
65
+150
55
+125
C
Specification 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.
INA117
SBOS154A
3
Ref
B
In
+In
V
Comp
V+
Output
Ref
A
1
2
3
4
8
7
6
5
8
7
6
2
1
3
4
5
Tab
Comp
Output
V+
V
Ref A
Ref B
In
+In
Case internally connected to V. Make no connection.
PIN CONFIGURATION
Top View
TO-99
INA117AM, BM, SM
Top View
DIP/SO
INA117P, KU
PACKAGE
SPECIFIED
DRAWING
TEMPERATURE
PACKAGE
ORDERING
TRANSPORT
PRODUCT
PACKAGE
NUMBER
RANGE
MARKING
NUMBER
(1)
MEDIA
INA117P
DIP-8
006
40
C to +85
C
INA117P
INA117P
Rails
INA117KU
SO-8 Surface-Mount
182
"
INA117KU
INA117KU
Rails
"
"
"
"
"
INA117KU/2K5
Tape and Reel
INA117AM
TO-99 Metal
001
25
C to +85
C
INA117AM
INA117AM
Rails
INA117BM
"
"
"
INA117BM
INA117BM
Rails
INA117SM
"
"
55
C to +125
C
INA117SM
INA117SM
Rails
NOTE: (1) 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.
PACKAGE/ORDERING INFORMATION
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments 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.
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
INA117
SBOS154A
4
TYPICAL PERFORMANCE CURVES
At T
A
= +25
C, V
S
=
15V, unless otherwise noted.
POSITIVE COMMON-MODE VOLTAGE RANGE
vs POSITIVE POWER-SUPPLY VOLTAGE
Positive Power-Supply Voltage (V)
5
10
15
20
400
350
300
250
200
150
100
50
Positive Common-Mode Range (V)
T
A
= +25
C
T
A
= 55
C
T
A
= +125
C
V
S
= 5V to 20V
Max Rating = 200V
NEGATIVE COMMON-MODE VOLTAGE RANGE
vs NEGATIVE POWER-SUPPLY VOLTAGE
Negative Power-Supply Voltage (V)
5
10
15
20
400
350
300
250
200
150
100
50
Negative Common-Mode Range (V)
T
A
= +25
C
T
A
= 55
C to +125
C
+V
S
= +5V to +20V
Max Rating = 200V
POWER-SUPPLY REJECTION vs FREQUENCY
Frequency (Hz)
1
10
100
1k
10k
100
90
80
70
60
50
40
Power-Supply Rejection (dB)
V+
V
COMMON-MODE REJECTION vs FREQUENCY
Frequency (Hz)
20
100
1k
10k
100k
2M
100
90
80
70
60
50
40
Common-Mode Rejection (dB)
INA117AM, SM, P, KU
INA117BM
INA117
SBOS154A
5
TYPICAL PERFORMANCE CURVES
(Cont.)
At T
A
= +25
C, V
S
=
15V, unless otherwise noted.
SMALL SIGNAL STEP RESPONSE
C
L
= 1000pF
SMALL SIGNAL STEP RESPONSE
C
L
= 0
LARGE SIGNAL STEP RESPONSE
PDF 
ZIP