AD8479

更新时间： 2024-11-13 12:26:15

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
16页	409K
描述
Very High Common-Mode Voltage Precision Difference Amplifier

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AD8479 数据手册

Very High Common-Mode Voltage

Precision Difference Amplifier

AD8479

Data Sheet

FEATURES

FUNCTIONAL BLOCK DIAGRAM

AD8479

600 V common-mode voltage range

Rail-to-rail output

REF(–)

Fixed gain of 1

Wide power supply range of 2.5 V to 18 V

550 μA typical power supply current

Excellent ac specifications

90 dB minimum CMRR

130 kHz bandwidth

1MΩ

–IN

+IN

OUTPUT

REF(+)

–V

High accuracy dc performance

5 ppm maximum gain nonlinearity

10 µV/°C maximum offset voltage drift

5 ppm/°C maximum gain drift

NOTES

1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.

Figure 1.

APPLICATIONS

800

600

High voltage current sensing

Battery cell voltage monitors

Power supply current monitors

Motor controls

= ±15V

400

= ±5V

200

Isolation

GENERAL DESCRIPTION

–200

–400

–600

–800

The AD8479 is a difference amplifier with a very high input

common-mode voltage range. The AD8479 is a precision device

that allows the user to accurately measure differential signals in

the presence of high common-mode voltages up to 600 V.

The AD8479 can replace costly isolation amplifiers in applications

that do not require galvanic isolation. The device operates over

–20

–15

–10

–5

(V)

OUT

600 V common-mode voltage range and has inputs that are

Figure 2. Input Common-Mode Voltage vs. Output Voltage

protected from common-mode or differential mode transients

up to 600 V.

The AD8479 has low offset voltage, low offset voltage drift,

low gain drift, low common-mode rejection drift, and excellent

common-mode rejection ratio (CMRR) over a wide frequency

range.

The AD8479 is available in a space-saving 8-lead SOIC package

and is operational over the −40°C to +125°C temperature range.

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

rights of third parties that may result from its 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 and registered trademarks 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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与AD8479相关器件

型号	品牌	获取价格	描述	数据表
AD8479ARZ	ADI	获取价格	Very High Common-Mode Voltage Precision Difference Amplifier
AD8479ARZ-RL	ADI	获取价格	Very High Common-Mode Voltage Precision Difference Amplifier
AD8479BRZ	ADI	获取价格	Very High Common-Mode Voltage Precision Difference Amplifier
AD8479BRZ-RL	ADI	获取价格	Very High Common-Mode Voltage Precision Difference Amplifier
AD8479TRZ-EP	ADI	获取价格	Very High Common-Mode Voltage Precision Difference Amplifier
AD8479TRZ-EP-R7	ADI	获取价格	Operational Amplifier
AD847A	ADI	获取价格	High Speed, Low Power Monolithic Op Amp
AD847AQ	ADI	获取价格	High Speed, Low Power Monolithic Op Amp
AD847AQ	ROCHESTER	获取价格	OP-AMP, 4000uV OFFSET-MAX, 35MHz BAND WIDTH, CDIP8, CERDIP-8
AD847AR	ADI	获取价格	High Speed, Low Power Monolithic Op Amp

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