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®
INA137
INA2137
INA137
INA2137
INA137
INA2137
AUDIO DIFFERENTIAL LINE RECEIVERS
±6dB (G = 1/2 or 2)
FEATURES
APPLICATIONS
q SINGLE AND DUAL VERSIONS
q LOW DISTORTION: 0.0005% at f = 1kHz
q HIGH SLEW RATE: 14V/µs
q FAST SETTLING TIME: 3µs to 0.01%
q WIDE SUPPLY RANGE: ±4V to ±18V
q LOW QUIESCENT CURRENT: 2.9mA max
q HIGH CMRR: 90dB
q FIXED GAIN = ±6dB
q PACKAGES—SINGLE: 8-PIN DIP, SO-8
DUAL: 14-PIN DIP, SO-14
DESCRIPTION
q AUDIO DIFFERENTIAL LINE RECEIVER
q G = 1/2 OR G = 2 AMPLIFIER
q INSTRUMENTATION BUILDING BLOCK
q CURRENT SHUNT MONITOR
q VOLTAGE-CONTROLLED CURRENT
SOURCE
q GROUND LOOP ELIMINATOR
V+
7
–In 2
12k
6k5 Sense
The INA137 and INA2137 are differential line receivers
consisting of high performance op amps with on-chip
precision resistors. They are fully specified for high
performance audio applications and have excellent ac
specifications, including low distortion (0.0005% at
1kHz) and high slew rate (14V/µs), assuring good
dynamic response. In addition, wide output voltage
swing and high output drive capability allow use in a
wide variety of demanding applications. The dual ver-
sion features completely independent circuitry for low-
est crosstalk and freedom from interaction, even when
overdriven or overloaded.
The INA137 and INA2137 on-chip resistors are laser
trimmed for accurate gain and optimum
common-mode rejection. Furthermore, excellent TCR
tracking of the resistors maintains gain accuracy and
common-mode rejection over temperature. Operation
is guaranteed from ±4V to ±18V (8V to 36V total
supply).
The INA137 is available in 8-pin DIP and SO-8
surface-mount packages. The INA2137 comes in
14-pin DIP and SO-14 surface-mount packages. Both
are specified for operation over the extended industrial
temperature range, –40°C to +85°C.
6 Output
+In 3
12k
6k
1 Ref
INA137
4
V–
V+
11
–In A 2
12k
6k
12 Sense A
+In A 3
12k
–In B 6
12k
A
6k
6k
13 Out A
14 Ref A
10 Sense B
B 9 Out B
+In B 5
12k
6k8
INA2137
4
V–
Ref B
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
©1997 Burr-Brown Corporation
PDS-1391B
Printed in U.S.A. July, 1997

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SPECIFICATIONS: VS = ±18V
At TA = +25°C, VS = ±18V, RL = 2k, G = 1/2, and Ref Pin connected to Ground, unless otherwise noted.
INA137PA, UA
INA2137PA, UA
PARAMETER
CONDITIONS
MIN TYP
MAX
UNITS
AUDIO PERFORMANCE
Total Harmonic Distortion + Noise, f = 1kHz
Noise Floor, RTO(1)
Headroom, RTO(1)
FREQUENCY RESPONSE
Small-Signal Bandwidth
Slew Rate
Settling Time: 0.1%
0.01%
Overload Recovery Time
Channel Separation (dual), f = 1kHz
OUTPUT NOISE VOLTAGE(2)
f = 20Hz to 20kHz
f = 1kHz
OFFSET VOLTAGE(3)
Input Offset Voltage
vs Temperature
vs Power Supply
INPUT
Common-Mode Voltage Range: Positive
Negative
Differential Voltage Range
Common-Mode Rejection
Impedance(4)
Differential
Common-Mode
GAIN
Initial
Error
vs Temperature
Nonlinearity
OUTPUT
Voltage Output, Positive
Negative
Current Limit, Continuous to Common
Capacitive Load (Stable Operation)
POWER SUPPLY
Rated Voltage
Voltage Range
Quiescent Current (per Amplifier)
TEMPERATURE RANGE
Specification Range
Operation Range
Storage Range
Thermal Resistance, θJA
8-Pin DIP
SO-8 Surface-Mount
14-Pin DIP
SO-14 Surface-Mount
VIN = 10Vrms
20kHz BW
THD+N < 1%
10V Step, CL = 100pF
10V Step, CL = 100pF
50% Overdrive
RTO
VCM = 0V
Specified Temperature Range
VS = ±4V to ±18V
VO = 0V
VO = 0V
VCM = ±46.5V, RS = 0
VO = –10V to 10V
VO = –10V to 10V
IO = 0
0.0005
–106
+23
4.0
14
2
3
3
123
3.5
26
±100
±2
±5
3(V+)–7.5
3(V–)+7.5
74
3(V+)–6
3(V–)+3
See Typical Curve
90
24
18
0.5
±0.01
±1
0.0001
(V+)–2
(V–)+2
(V+)–1.8
(V–)+1.6
±60
500
±18
±4
±2.4
–40
–55
–55
100
150
80
100
±1000
±60
±0.1
±10
±18
±2.9
85
125
125
%
dBu
dBu
MHz
V/µs
µs
µs
µs
dB
µVrms
nV/HZ
µV
µV/°C
µV/V
V
V
dB
k
k
V/V
%
ppm/°C
%
V
V
mA
pF
V
V
mA
°C
°C
°C
°C/W
°C/W
°C/W
°C/W
RTO = Referred to Output.
NOTES: (1) dBu = 20log (Vrms /0.7746). (2) Includes effects of amplifier’s input current noise and thermal noise contribution of resistor network.
(3) Includes effects of amplifier’s input bias and offset currents. (4) Internal resistors are ratio matched but have ±25% absolute value.
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.
®
INA137, INA2137
2

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PIN CONFIGURATIONS
Top View
8-Pin DIP/SO-8
Top View
14-Pin DIP/SO-14
Ref 1
–In 2
+In 3
V– 4
8 NC
7 V+
6 Output
5 Sense
NC = No Connection
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage, V+ to V– .................................................................... 40V
Input Voltage Range .......................................................................... ±80V
Output Short-Circuit (to ground)(2) ............................................................ Continuous
Operating Temperature ................................................. –55°C to +125°C
Storage Temperature ..................................................... –55°C to +125°C
Junction Temperature .................................................................... +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
NOTE: (1) Stresses above these ratings may cause permanent damage.
(2) One channel per package.
PACKAGE/ORDERING INFORMATION
PRODUCT
Single
INA137PA
INA137UA
Dual
INA2137PA
INA2137UA
PACKAGE
8-Pin DIP
SO-8 Surface-Mount
14-Pin DIP
SO-14 Surface-Mount
PACKAGE
DRAWING
NUMBER(1)
SPECIFICATION
TEMPERATURE
RANGE
006 –40°C to +85°C
182 –40°C to +85°C
010 –40°C to +85°C
235 –40°C to +85°C
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book.
NC 1
–In A 2
+In A 3
V– 4
+In B 5
–In B 6
NC 7
14 Ref A
13 Out A
A
12 Sense A
11 V+
10 Sense B
B
9 Out B
8 Ref B
NC = No Connection
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with ap-
propriate precautions. Failure to observe proper handling and
installation procedures can cause damage.
ESD damage can range from subtle performance degradation
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.
®
3 INA137, INA2137

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TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = ±18V, and G = 1/2, unless otherwise noted.
0.1
0.010
0.001
TOTAL HARMONIC DISTORTION+NOISE
vs FREQUENCY
VO = 5Vrms
RL = 100k
RL = 2k
0.0001
20
100 1k
Frequency (Hz)
RL = 600
10k 20k
DIM INTERMODULATION DISTORTION
vs OUTPUT AMPLITUDE
5
BW = 100kHz
1
RTO
0.1 RL = 2k, 600
0.010
0.001
–10
–5
0 5 10 15 20 25
Output Amplitude (dBu)
HEADROOM - TOTAL HARMONIC DISTORTION+NOISE
vs OUTPUT AMPLITUDE
1
f = 1kHz
0.1
RTO
0.010
RL = 600
0.001
0.0001
0
RL = 2kΩ,
100k
5 10 15 20 25 30
Output Amplitude (dBu)
0.001
0.0001
HARMONIC DISTORTION PRODUCTS
vs FREQUENCY
VO = 1Vrms
2nd Harmonic
RL = 2k
RL = 600
0.00001
0.000001
20
3rd Harmonic
(
RL = 2k
RL = 600
Noise Limited)
100 1k
Frequency (Hz)
10k 20k
OUTPUT VOLTAGE NOISE SPECTRAL DENSITY
vs FREQUENCY
10k
1k
100
10
1
10 100 1k 10k 100k 1M
Frequency (Hz)
OUTPUT NOISE VOLTAGE
vs NOISE BANDWIDTH
100
10
1
0.1
1
10 100 1k 10k 100k
Frequency (Hz)
®
INA137, INA2137
4

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TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±18V, and G = 1/2, unless otherwise noted.
10
0
–10
–20
–30
1k
GAIN vs FREQUENCY
10k 100k 1M
Frequency (Hz)
10M
COMMON-MODE REJECTION vs FREQUENCY
100
80
60
40
1k
RTO
10k 100k
Frequency (Hz)
1M
POWER SUPPLY REJECTION vs FREQUENCY
120
RTO
100
80 –PSR
60
40
+PSR
20
0
100
1k 10k 100k
Frequency (Hz)
1M
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
40
30
20
10
0
100 1k 10k 100k 1M 10M
Frequency (Hz)
CHANNEL SEPARATION vs FREQUENCY
130
RL = 100k
120
RL = 2k
110
100
Dual Devices
90
20
100
1k
Frequency (Hz)
10k 20k
INPUT COMMON-MODE VOLTAGE
vs OUTPUT VOLTAGE
80
G = 1/2
60 VS = ±18V
40
20
0
–20
–40
–60 VREF = 0V
RL = 2k
–80
–20 –15 –10
–5
0
5 10 15 20
Output Voltage (V)
®
5 INA137, INA2137