Datasheet > INA322

INA322

更新时间： 2025-09-18 22:29:15

品牌	Logo	应用领域
BB		仪表放大器
页数	文件大小	规格书
15页	302K
描述
microPower, Single-Supply, CMOS INSTRUMENTATION AMPLIFIER

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INA322 数据手册

INA322

INA2322

www.ti.com

microPower, Single-Supply, CMOS

INSTRUMENTATION AMPLIFIER

FEATURES

APPLICATIONS

● LOW COST

●●INDUSTRIAL SENSOR AMPLIFIERS:

Bridge, RTD, Thermistor, Position

● PHYSIOLOGICAL AMPLIFIERS:

ECG, EEG, EMG

● A/D CONVERTER SIGNAL CONDITIONING

● DIFFERENTIAL LINE RECEIVERS WITH GAIN

● FIELD UTILITY METERS

● PCMCIA CARDS

● COMMUNICATION SYSTEMS

● TEST EQUIPMENT

● LOW QUIESCENT CURRENT: 40µA/channel

Shut Down: < 1µA

● HIGH GAIN ACCURACY: G = 5, 0.07%, 2ppm/°C

● GAIN SET WITH EXTERNAL RESISTORS

● LOW BIAS CURRENT: 10pA

● BANDWIDTH: 500kHz, G = 5V/V

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

● WIDE TEMPERATURE RANGE:

–55°C to +125°C

● SINGLE VERSION IN MSOP-8 PACKAGE AND

DUAL VERSION IN TSSOP-14 PACKAGE

● AUTOMOTIVE INSTRUMENTATION

Configured internally for 5V/V gain, the INA322 offers

exceptional flexibility with user-programmable external

gain resistors. The INA322 reduces common-mode er-

ror over frequency and with CMRR remaining high up

to 3kHz, line noise and line harmonics are rejected.

DESCRIPTION

The INA322 family is a series of low cost, rail-to-rail

output, micropower CMOS instrumentation amplifiers

that offer wide-range, single-supply, as well as bipolar-

supply operation. The INA322 family provides low-

cost, low-noise amplification of differential signals with

micropower current consumption of 40µA. When shut-

down the INA322 has a quiescent current of less than

1µA. Returning to normal operations within nanosec-

onds, the shutdown feature makes the INA322 optimal

for low-power battery or multiplexing applications.

The low-power design does not compromise on band-

width or slew rate, making the INA322 ideal for driving

sampling Analog-to-Digital (A/D) converters as well as

general-purpose applications. With high precision, low

cost, and small packaging, the INA322 outperforms dis-

crete designs, while offering reliability and performance.

R₁

R₂

160kΩ

40kΩ

160kΩ

REF

V_OUT

V_IN–

V_IN+

Gain = 5 + 5(R2/R1)

V_OUT= (V_IN+– V_IN–) • Gain

Shutdown

V+

V–

SBOS174A

Printed in U.S.A. December, 2000

12 3 4 5 6 7...15

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