Burr Brown INA157UA-2K5, INA157UA, INA157U-2K5, INA157U Datasheet

High-Speed, Precision

DIFFERENCE AMPLIFIER

©1999 Burr-Brown Corporation PDS-1483B Printed in U.S.A. March, 1999

®

FEATURES

● DESIGNED FOR LOW COST

● LOW OFFSET VOLTAGE: ±500µV max

● LOW OFFSET DRIFT: ±2µV/°C

● LOW GAIN ERROR: ±0.05% max

● WIDE BANDWIDTH: 3MHz

● HIGH SLEW RATE: 14V/µs

● FAST SETTLING TIME: 3µs to 0.01%

● WIDE SUPPLY RANGE: ±4V to ±18V

● LOW QUIESCENT CURRENT: 2.4mA

● SO-8 SURFACE-MOUNT PACKAGE

INA157

DESCRIPTION

The INA157 is a high slew rate, G = 1/2 or G = 2
difference amplifier consisting of a precision op amp
with a precision resistor network. The on-chip resis­tors are laser trimmed for accurate gain and high
common-mode rejection. Excellent TCR tracking of
the resistors maintains gain accuracy and common­mode rejection over temperature. The input common­mode voltage range extends beyond the positive and
negative supply rails. It operates on ±4V to ±18V
supplies.

The difference amplifier is the foundation of many
commonly used circuits. The INA157 provides this
circuit function without using an expensive precision
resistor network. The INA157 is available in a SO-8
surface-mount package and is specified for operation
over the extended industrial temperature range, –40°C
to +85°C.

APPLICATIONS

● DIFFERENTIAL INPUT AMPLIFIER

● INSTRUMENTATION AMPLIFIER

BUILDING BLOCK

● G = 1/2 AMPLIFIER

● G = 2 AMPLIFIER

● DIFFERENTIAL CURRENT RECEIVER

● VOLTAGE-CONTROLLED CURRENT SOURCE

● GROUND LOOP ELIMINATOR

● CURRENT SHUNT MONITOR

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone]

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

2

3

4

–In

+In

V–

6kΩ12kΩ

6kΩ12kΩ

5

1

Sense

Ref

6

Output

7

V+

INA157

For most current data sheet and other product

information, visit www.burr-brown.com

2

®

INA157

SPECIFICATIONS: VS = ±15V

At TA = +25°C, VS = ±15V, RL = 2kΩ connected to ground, and reference pin connected to ground, unless otherwise noted.

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.

INA157U INA157UA
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
OFFSET VOLTAGE

(1)

RTO

Initial

(1)

±100 ±500 ✽ ±1000 µV
vs Temperature ±2 ±20 ✽✽µV/°C
vs Power Supply V

S

= ±4V to ±18V ±5 ±60 ✽✽µV/V

vs Time 0.25 ✽ µV/mo

INPUT IMPEDANCE

(2)

Differential 24 ✽ kΩ
Common-Mode 18 ✽ kΩ

INPUT VOLTAGE RANGE

Common-Mode Voltage Range

Positive VO = 0V 3(V+)–7.5 3(V+)–6 ✽✽ V
Negative VO = 0V 3(V–)+7.5 3(V–)+3 ✽✽ V

Common-Mode Rejection Ratio

VCM = –37.5V to 37.5V, RS = 0Ω

86 96 80 ✽ dB

OUTPUT VOLTAGE NOISE

(3)

RTO
f = 0.1Hz to 10Hz 1.3 ✽ µVp-p
f = 1kHz 26 ✽ nV/√Hz

GAIN

Initial 0.5 ✽ V/V
Error V

O

= –10V to +10V ±0.01 ±0.05 ✽ ±0.1 %

vs Temperature ±1 ±10 ✽✽ppm/°C

Nonlinearity VO = –10V to +10V ±0.0001 ±0.001 ✽ ±0.002 % of FS

OUTPUT

Voltage, Positive (V+)–2 (V+)–1.8 ✽✽ V

Negative (V–)+2 (V–)+1.6 ✽✽ V
Current Limit, Continuous to Common ±60 ✽ mA
Capacitive Load (stable operation) 500 ✽ pF

FREQUENCY RESPONSE

Small-Signal Bandwidth –3dB 4 ✽ MHz
Slew Rate 14 ✽ V/µs
Settling Time: 0.1% 10V Step, C

L

= 100pF 2 ✽ µs

0.01% 10V Step, CL = 100pF 3 ✽ µs

Overload Recovery Time 50% Overdrive 3 ✽ µs

POWER SUPPLY

Rated Voltage ±15 ✽ V
Operating Voltage Range ±4 ±18 ✽✽V
Quiescent Current IO = 0mA ±2.4 ±2.9 ✽✽mA

TEMPERATURE RANGE

Specified –40 +85 ✽✽°C
Operation –55 +125 ✽✽°C
Storage –55 +125 ✽✽°C
Thermal Resistance,

Θ

JA

SO-8 Surface-Mount 150 ✽ °C/W

✽Specifications the same as INA157U.
NOTES: (1) Includes effects of amplifier’s input bias and offset currents. (2) Internal resistors are ratio matched but have ±20% absolute value. (3) Includes effects

of amplifier’s input current noise and thermal noise contribution of resistor network.

3

®

INA157

PIN CONFIGURATION

TOP VIEW SO-8

Supply Voltage, V+ to V– .................................................................... 40V

Input Voltage Range .......................................................................... ±80V

Output Short Circuit (to ground) ............................................. 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.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability.

ABSOLUTE MAXIMUM RATINGS

(1)

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 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.

PACKAGE SPECIFIED
DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT

PRODUCT PACKAGE NUMBER

(1)

RANGE MARKING NUMBER

(2)

MEDIA

INA157U SO-8 Surface-Mount 182 –40°C to +85°C INA157U INA157U Rails

"""""INA157U/2K5 Tape and Reel

INA157UA SO-8 Surface-Mount 182 –40°C to +85°C INA157UA INA157UA Rails

"""""INA157UA/2K5 Tape and Reel

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 “INA157U/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.

PACKAGE/ORDERING INFORMATION

Ref

–In

+In

V–

NC

V+

Output

Sense

NC = No Connection

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3

4

8

7

6

5