AD8420BRMZ

更新时间： 2024-11-25 08:17:47

品牌	Logo	应用领域
亚德诺 - ADI		仪表放大器放大器电路光电二极管
页数	文件大小	规格书
10页	247K
描述
Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier

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AD8420BRMZ 数据手册

Wide Supply Range, Rail-to-Rail Output

Instrumentation Amplifier

Preliminary Technical Data

AD8420

FEATURES

PIN CONFIGURATION

Gain set with 2 external resistors

Gain range: 1 to 1000

OUT

Input voltage goes below ground

Very wide power supply range

Single supply: 2.7V to 36V

Dual supply: +/-2.7V to+/-18V

Bandwidth (G=100): 2.5 kHz

Input noise: 50 nV/√Hz

Max supply current: 90 µA

Max offset voltage: 200 uV

Max differential input voltage: 1V

Min CMRR: 100 dB

+IN

–IN

REF

–V

AD8420

TOP VIEW

(Not to Scale)

Figure 1.

Table 1. Instrumentation Amplifiers by Category¹

MSOP-8 package

General

Purpose

AD8221/2

AD8220/4

AD8228

Zero

Drift

Military

Grade

Low

Power

AD8420

AD8235/6 AD8251

AD627 AD8253

AD8226/7 AD8231

AD623

AD8223

Digital

Gain

AD8250

APPLICATIONS

Bridge amplifiers

Pressure Measurement

Medical instrumentation

Portable data acquisition

Multichannel systems

AD8231 AD620

AD8290 AD621

AD8293 AD524

AD8553 AD526

AD8556 AD624

AD8557

AD8295

¹See www.analog.com for the latest instrumentation amplifiers.

GENERAL DESCRIPTION

The AD8420 can operate off both single or dual supplies. It

works well for a portable system with a limited single supply

voltage and equally well for a system using large dual supplies.

The AD8420 is a low cost, wide supply range amplifier that uses

two resistors to set any gain between 1 and 1000. It is optimized

to amplify small differential voltages in the presence of large

common mode signals.

Gain is set using the ratio of two resistors. A reference pin

allows the user to offset the output voltage. This feature is useful

when the output signal needs to be centered around a specific

voltage, such as mid-supply.

The AD8420 is based on a current mode architecture that gives

it excellent input common mode range. Unlike conventional

instrumentation amplifiers, the AD8420 can easily amplify

signals at or even slightly below ground without requiring dual

supplies. The AD8420 has a full rail to rail output, and the

output voltage is completely independent of the input common

mode voltage.

The AD8420 is available in an 8 pin MSOP package.

Performance is specified over the full temperature range of

−40°C to +85°C. Part is operational from −40°C to +125°C

Rev. PrD

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

12 3 4 5 6 7...10

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与AD8420BRMZ相关器件

型号	品牌	获取价格	描述	数据表
AD8420BRMZ-R7	ADI	获取价格	Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier
AD8420BRMZ-RL	ADI	获取价格	Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier
AD8421	ADI	获取价格	3 nV/√Hz, Low Power
AD8421ARMZ	ADI	获取价格	3 nV/√Hz, Low Power
AD8421ARMZ-R7	ADI	获取价格	3 nV/√Hz, Low Power
AD8421ARMZ-RL	ADI	获取价格	3 nV/√Hz, Low Power
AD8421ARZ	ADI	获取价格	3 nV/√Hz, Low Power
AD8421ARZ-R7	ADI	获取价格	3 nV/√Hz, Low Power
AD8421ARZ-RL	ADI	获取价格	3 nV/√Hz, Low Power
AD8421BRMZ	ADI	获取价格	3 nV/√Hz, Low Power

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