Datasheet > AD8422ARMZ-R7

AD8422ARMZ-R7

更新时间： 2024-11-21 12:26:15

品牌	Logo	应用领域
亚德诺 - ADI		仪表放大器
页数	文件大小	规格书
24页	697K
描述
High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier

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AD8422ARMZ-R7 数据手册

High Performance, Low Power, Rail-to-Rail

Precision Instrumentation Amplifier

Data Sheet

AD8422

FEATURES

CONNECTION DIAGRAM

Low power: 330 µA maximum quiescent current

Rail-to-rail output

Low noise and distortion

8 nV/√Hz maximum input voltage noise at 1 kHz

0.15 µV p-p RTI noise (G = 100)

AD8422

–IN

OUT

REF

–V

+IN

0.5 ppm nonlinearity with 2 kΩ load (G = 1)

Excellent ac specifications

80 dB minimum CMRR at 7 kHz (G = 1)

2.2 MHz bandwidth (G = 1)

TOP VIEW

(Not to Scale)

Figure 1. 8-Lead MSOP (RM), 8-Lead SOIC (R)

High precision dc performance (AD8422BRZ)

150 dB minimum CMRR (G = 1000)

0.04% maximum gain error (G = 1000)

0.3 µV/°C maximum input offset drift

0.5 nA maximum input bias current

Wide supply range

–20

–30

= 2kΩ

= ±10V

OUT

–40

–50

–60

–70

3.6 V to 36 V single supply

–80

G = 1000

1.8 V to 18 V dual supply

–90

Input overvoltage protection: 40 V from opposite supply

Gain range: 1 to 1000

G = 100

G = 10

–100

–110

–120

–130

–140

G = 1

APPLICATIONS

Medical instrumentation

Industrial process controls

Strain gages

100

FREQUENCY (Hz)

Figure 2. Total Harmonic Distortion vs. Frequency

Transducer interfaces

Precision data acquisition systems

Channel-isolated systems

Portable instrumentation

GENERAL DESCRIPTION

The AD8422 is a high precision, low power, low noise, rail-to-rail

instrumentation amplifier that delivers the best performance

per unit microampere in the industry. The AD8422 processes

signals with ultralow distortion performance that is load

independent over its full output range.

The wide input range and rail-to-rail output of the AD8422

bring all of the benefits of a high performance in-amp to single-

supply applications. Whether using high or low supply voltages,

the power savings make the AD8422 an excellent choice for

high channel count or power sensitive applications on a very

tight error budget.

The AD8422 is the third generation development of the industry-

standard AD620. The AD8422 employs new process technologies

and design techniques to achieve higher dynamic range and

lower errors than its predecessors, while consuming less than

one-third of the power. The AD8422 uses the high performance

pinout introduced by the AD8221.

The AD8422 uses robust input protection that ensures reliability

without sacrificing noise performance. The AD8422 has high

ESD immunity, and the inputs are protected from continuous

voltages up to 40 V from the opposite supply rail.

A single resistor sets the gain from 1 to 1000. The reference pin

can be used to apply a precise offset to the output voltage.

Very low bias current makes the AD8422 error-free with high

source impedance, allowing multiple sensors to be multiplexed

to the inputs. Low voltage noise and low current noise make the

AD8422 an ideal choice for measuring a Wheatstone bridge.

The AD8422 is specified from −40°C to +85°C and has typical

performance curves to 125°C. It is available in 8-lead MSOP

and 8-lead SOIC packages.

Rev. 0

Document Feedback

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

Technical Support

www.analog.com

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AD8422ARMZ-R7 替代型号

型号	品牌	替代类型	描述	数据表
AD8422ARMZ	ADI	类似代替	High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier

与AD8422ARMZ-R7相关器件

型号	品牌	获取价格	描述	数据表
AD8422ARMZ-RL	ADI	获取价格	High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier
AD8422ARZ	ADI	获取价格	High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier
AD8422ARZ-R7	ADI	获取价格	High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier
AD8422ARZ-RL	ADI	获取价格	High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier
AD8422BRMZ	ADI	获取价格	High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier
AD8422BRMZ-R7	ADI	获取价格	High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier
AD8422BRMZ-RL	ADI	获取价格	High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier
AD8422BRZ	ADI	获取价格	High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier
AD8422BRZ-R7	ADI	获取价格	High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier
AD8422BRZ-RL	ADI	获取价格	High Performance, Low Power, Rail-to-Rail Precision Instrumentation Amplifier

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