INA129

更新时间： 2024-11-29 22:48:07

品牌	Logo	应用领域
BB		仪表放大器
页数	文件大小	规格书
10页	248K
描述
Precision, Low Power INSTRUMENTATION AMPLIFIERS

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INA129 数据手册

INA128

INA129

INA128

INA129

INA128

INA129

Precision, Low Power

INSTRUMENTATION AMPLIFIERS

DESCRIPTION

FEATURES

The INA128 and INA129 are low power, general

purpose instrumentation amplifiers offering excellent

accuracy. Their versatile 3-op amp design and small

size make them ideal for a wide range of applications.

Current-feedback input circuitry provides wide band-

width even at high gain (200kHz at G = 100).

● LOW OFFSET VOLTAGE: 50µV max

● LOW DRIFT: 0.5µV/°C max

● LOW INPUT BIAS CURRENT: 5nA max

● HIGH CMR: 120dB min

● INPUTS PROTECTED TO ±40V

● WIDE SUPPLY RANGE: ±2.25 to ±18V

● LOW QUIESCENT CURRENT: 700µA

● 8-PIN PLASTIC DIP, SO-8

A single external resistor sets any gain from 1 to

10,000. INA128 provides an industry standard gain

equation; INA129’s gain equation is compatible with

the AD620.

The INA128/INA129 is laser trimmed for very low

offset voltage (50µV), drift (0.5µV/°C) and high com-

mon-mode rejection (120dB at G ≥ 100). It operates

with power supplies as low as ±2.25V, and quiescent

current is only 700µA—ideal for battery operated

systems. Internal input protection can withstand up to

±40V without damage.

APPLICATIONS

● BRIDGE AMPLIFIER

● THERMOCOUPLE AMPLIFIER

● RTD SENSOR AMPLIFIER

● MEDICAL INSTRUMENTATION

● DATA ACQUISITION

The INA128/INA129 is available in 8-pin plastic

DIP, and SO-8 surface-mount packages, specified for

the –40°C to +85°C temperature range. The INA128

is also available in dual configuration, the INA2128.

V+

INA128:

INA128, INA129

50kΩ

R_G

G = 1 +

–

V_IN

Over-Voltage

Protection

A₁

25kΩ⁽¹⁾

INA129:

40kΩ

49.4kΩ

R_G

G = 1 +

A₃

V_O

R_G

25kΩ⁽¹⁾

A₂

Ref

V_IN

Over-Voltage

Protection

40kΩ

NOTE: (1) INA129: 24.7kΩ

V–

International Airport Industrial Park

•

Mailing Address: PO Box 11400, Tucson, AZ 85734

FAXLine: (800) 548-6133 (US/Canada Only)

•

Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706

•

Tel: (520) 746-1111 • Twx: 910-952-1111

Internet: http://www.burr-brown.com/

•

Cable: BBRCORP

•

Telex: 066-6491

•

FAX: (520) 889-1510

•

Immediate Product Info: (800) 548-6132

PDS-1296C

Printed in U.S.A. October, 1996

12 3 4 5 6 7...10

中文翻译

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