INA332

INA2332

SBOS216B – SEPTEMBER 2001 - REVISED OCTOBER 2006

www.ti.com

DESCRIPTION

The INA332 and INA2332 are rail-to-rail output, low-power

CMOS instrumentation amplifiers that offer wide range, single-

supply, and bipolar-supply operation. Using a special manu-

facturing flow, the INA332 family provides the lowest cost

available, while still achieving low-noise amplification of dif-

ferential signals with low quiescent current of 415

µA (drop-

ping to 0.01

µA when shut down). Returning to normal opera-

tion within microseconds, this INA can be used for battery or

multichannel applications.

Configured internally in a gain of 5V/V, the INA332 offers

flexibility in higher gains by choosing external resistors.

FEATURES

q DESIGNED FOR LOW COST

q HIGH GAIN ACCURACY: G = 5, 0.07%, 2ppm/

°C

q GAIN SET WITH EXT. RESISTORS FOR > 5V/V

q HIGH CMRR: 73dB DC, 50dB at 45kHz

q LOW BIAS CURRENT: 0.5pA

q BANDWIDTH, SLEW RATE: 2.0MHz, 5V/

µs

q RAIL-TO-RAIL OUTPUT SWING: (V+) – 0.02V

q WIDE TEMPERATURE RANGE: –55

°C to +125°C

q LOW QUIESCENT CURRENT: 490

µA max/chan

q SHUTDOWN: 0.01

µA

q MSOP-8 SINGLE AND TSSOP-14 DUAL PACKAGES

Copyright © 2001-2006, Texas Instruments Incorporated

Low-Power, Single-Supply, CMOS

INSTRUMENTATION AMPLIFIERS

APPLICATIONS

q INDUSTRIAL SENSOR AMPLIFIERS:

Bridge, RTD, Thermocouple, Position

q PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG

q A/D CONVERTER SIGNAL CONDITIONING

q DIFFERENTIAL LINE RECEIVERS WITH GAIN

q FIELD UTILITY METERS

q PCMCIA CARDS

q AUDIO AMPLIFIERS

q COMMUNICATION SYSTEMS

q TEST EQUIPMENT

q AUTOMOTIVE INSTRUMENTATION

The INA332 rejects line noise and its harmonics because

common-mode error remains low even at higher frequencies.

High bandwidth and slew rate make the INA332 ideal for

directly driving sampling Analog-to-Digital (A/D) converters

as well as general-purpose applications.

With high precision, low cost, and small packages, the

INA332 outperforms discrete designs.

Additionally, because they are specified for a wide tempera-

ture range of –55

°C to +125°C, the INA332 family can be

used in demanding environments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

®

INA2332

INA3

32

A2

A1

A3

40k

Ω

V

REF

V

IN–

V

IN+

10k

Ω

10k

Ω

Shutdown

V+

V

OUT

G = 5 + 5(R

2/R1)

V–

R

2

R

1

R

G

40k

Ω

Ch A

INA2332

INA332

Ch B

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