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®
INA106
INA106
INA106
Precision Gain = 10
DIFFERENTIAL AMPLIFIER
FEATURES
q ACCURATE GAIN: ±0.025% max
q HIGH COMMON-MODE REJECTION:
86dB min
q NONLINEARITY: 0.001% max
q EASY TO USE
q PLASTIC 8-PIN DIP, SO-8 SOIC
PACKAGES
APPLICATIONS
q G = 10 DIFFERENTIAL AMPLIFIER
q G = +10 AMPLIFIER
q G = –10 AMPLIFIER
q G = +11 AMPLIFIER
q INSTRUMENTATION AMPLIFIER
DESCRIPTION
The INA106 is a monolithic Gain = 10 differential
amplifier consisting of a precision op amp and on-chip
metal film resistors. The resistors are laser trimmed
for accurate gain and high common-mode rejection.
Excellent TCR tracking of the resistors maintains
gain accuracy and common-mode rejection over
temperature.
The differential amplifier is the foundation of many
commonly used circuits. The INA106 provides this
precision circuit function without using an expensive
resistor network. The INA106 is available in 8-pin
plastic DIP and SO-8 surface-mount packages.
–In 2
R1
10k
3
+In
R3
10k
R2
100k
R4
100k
5 Sense
7 V+
6 Output
4 V–
1 Reference
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/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1987 Burr-Brown Corporation
PDS-729F
Printed in U.S.A. August, 1998

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SPECIFICATIONS
ELECTRICAL
At +25°C, VS = ±15V, unless otherwise specified.
PARAMETER
GAIN
Initial(1)
Error
vs Temperature
Nonlinearity(2)
OUTPUT
Related Voltage
Rated Current
Impedance
Current Limit
Capacitive Load
INPUT
Impedance
Voltage Range
Common-Mode Rejection(3)
OFFSET VOLTAGE
Initial
vs Temperature
vs Supply
vs Time
NOISE VOLTAGE
fB = 0.01Hz to 10Hz
fO = 10kHz
DYNAMIC RESPONSE
Small Signal
Full Power BW
Slew Rate
Settling Time: 0.1%
0.01%
0.01%
POWER SUPPLY
Rated
Voltage Range
Quiescent Current
TEMPERATURE RANGE
Specification
Operation
Storage
CONDITIONS
IO = +20mA, –5mA
VO = 10V
To Common
Stable Operation
Differential
Common-Mode
Differential
Common-Mode
TA = TMIN to TMAX
RTI(4)
±VS = 6V to 18V
RTI(5)
–3dB
VO = 20Vp-p
VO = 10V Step
VO = 10V Step
VCM = 10V Step, VDIFF = 0V
Derated Performance
VO = 0V
MIN
10
+20, –5
±1
±11
86
30
2
±5
0
–40
–65
INA106KP, U
TYP
10
0.01
–4
0.0002
12
0.01
+40/–10
1000
10
110
100
50
0.2
1
10
1
30
5
50
3
5
10
5
±15
±1.5
MAX
0.025
0.001
200
10
±18
±2
+70
+85
+150
UNITS
V/V
%
ppm/°C
%
V
mA
mA
pF
k
k
V
V
dB
µV
µV/°C
µV/V
µV/mo
µVp-p
nV/Hz
MHz
kHz
V/µs
µs
µs
µs
V
V
mA
°C
°C
°C
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 “Maintaining CMR” section). (4) Includes effects of amplifiers’s input bias and offset currents. (5) Includes effect
of amplifier’s input current noise and thermal noise contribution of resistor network.
®
INA106
2

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PIN CONFIGURATION
Top View
Ref 1
(1)
–In 2
10k
100k
+In 3
10k
100k
V– 4
INA106
DIP/SOIC
8 NC
7 V+
6 Output
5 Sense
NOTE: (1) Pin 1 indentifier for SO-8 package.
Model number identification may be abbreviated
on SO-8 package due to limited available space.
ABSOLUTE MAXIMUM RATINGS
Power Supply Voltage ...................................................................... ±18V
Input Voltage Range ............................................................................ ±VS
Operating Temperature Range: P, U ................................ –40°C to +85°C
Storage Temperature Range ............................................ –40°C to +85°C
Lead Temperature (soldering, 10s): P .......................................... +300°C
Wave Soldering (3s, max) U .......................................................... +260°C
Output Short Circuit to Common .............................................. Continuous
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integral 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
published specifications.
PACKAGE/ORDERING INFORMATION
PRODUCT
PACKAGE
PACKAGE
DRAWING TEMPERATURE
NUMBER(1)
RANGE
INA106KP
INA106U
8-Pin Plastic DIP
SO-8 Surface Mount
006
182
0°C to +70°C
0°C to +70°C
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
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.
®
3 INA106

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TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = ±15V, unless otherwise noted.
STEP RESPONSE
2µs/div
50
0
–50
SMALL SIGNAL RESPONSE
(No Load)
2µs/div
SMALL SIGNAL RESPONSE
(RLOAD = , CLOAD = 100pF)
50
0
–50
2µs/div
–17.5
–15
–12.5
–10
–7.5
–5
–2.5
0
0
MAXIMUM VOUT vs IOUT
(Negative Swing)
VS = ±18V
VS = ±15V
VS = ±12V
VS = ±5V
–2 –4 –6 –8 –10 –12
–IOUT (mA)
1
0.1
0.01
TOTAL HARMONIC DISTORTION AND NOISE
vs FREQUENCY
A = 20dB, 3Vrms, 10kload
Noninverting
Inverting
0.001
1k
30kHz low-pass filtered
10k
Frequency (Hz)
100k
17.5
15
12.5
10
7.5
5
2.5
0
0
MAXIMUM VOUT vs IOUT
(Positive Swing)
VS = ±18V
VS = ±15V
VS = ±12V
VS = ±5V
6 12 18 24 30 36
IOUT (mA)
®
INA106
4

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TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.
110
100
90
80
70
60
10
CMR vs FREQUENCY
100 1k
Frequency (Hz)
10k
100k
140
120
100
80
60
40
1
POWER SUPPLY REJECTION
vs FREQUENCY
V–
V+
10 100 1k 10k 100k
Frequency (Hz)
APPLICATIONS INFORMATION
Figure 1 shows the basic connections required for operation
of the INA106. Power supply bypass capacitors should be
connected close to the device pins as shown.
V–
1µF
V+
1µF
V2 2
4
R1
10k
7
INA106
R2
100k
5
R3
10k
V3 3
R4
100k
1
6
+
VOUT = 10(V3 –V2)
FIGURE 1. Basic Power Supply and Signal Connections.
The differential input signal is connected to pins 2 and 3 as
shown. The source impedance connected to the inputs must
be equal to assure good common-mode rejection. A 5
mismatch in source impedance will degrade the common-
mode rejection of a typical device to approximately 86dB. If
the source has a known source impedance mismatch, an
additional resistor in series with one input can be used to
preserve good common-mode rejection.
The output is referred to the output reference terminal
(pin 1) which is normally grounded. A voltage applied to the
Ref terminal will be summed with the output signal. The
source impedance of a signal applied to the Ref terminal
should be less than 10to maintain good common-mode
rejection.
Figure 2 shows a voltage applied to pin 1 to trim the offset
voltage of the INA106. The known 100source impedance
of the trim circuit is compensated by the 10resistor in
series with pin 3 to maintain good CMR.
INA106
R1
V2 2
R2
5
10
V3 3
Compensates for
some impedance
at pin 1. See text.
R3
VO = V2 – V3
Offset Adjustment Range = ±3mV
6 VO
R4
1 499k
100
+15V
100k
–15V
FIGURE 2. Offset Adjustment.
Referring to Figure 1, the CMR depends upon the match of
the internal R4/R3 ratio to the R1/R2 ratio. A CMR of 106dB
requires resistor matching of 0.005%. To maintain high
CMR over temperature, the resistor TCR tracking must be
better than 2ppm/°C. These accuracies are difficult and
expensive to reliably achieve with discrete components.
®
5 INA106