Datasheet > AD628AR-REEL7

AD628AR-REEL7

更新时间： 2024-11-02 22:24:19

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亚德诺 - ADI		放大器
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描述
High Common-Mode Voltage Programmable Gain Difference Amplifier

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AD628AR-REEL7 数据手册

High Common-Mode Voltage

Programmable Gain Difference Amplifier

AD628

FUNCTIONAL BLOCK DIAGRAM

FEATURES

EXT1

EXT2

High common-mode input voltage range

120 V at V_S= 1ꢀ V

Gain range 0.1 to 100

Operating temperature range: −40°C to 8ꢀ°C

Supply voltage range

Dual supply: 2.2ꢀ V to 18 V

Single supply: 4.ꢀ V to 36 V

Excellent ac and dc performance

Offset temperature stability RTI: 10 µV/°C max

Offset: 1.ꢀ V mV max

100kΩ

10kΩ

–IN

+IN

G = +0.1

–IN

+IN

OUT

–IN

10kΩ

+IN

100kΩ

10kΩ

AD628

CMRR RTI: 7ꢀ dB min, dc to ꢀ00 Hz, G = +1

–V

REF

APPLICATIONS

FILT

High voltage current shunt sensing

Programmable logic controllers

Analog input front end signal conditioning

+ꢀ V, +10 V, ꢀ V, 10 V and 4 to 20 mA

Isolation

Figure 1.

130

120

110

100

Sensor signal conditioning

Power supply monitoring

Electrohydraulic control

Motor control

= ±15V

GENERAL DESCRIPTION

The AD628 is a precision difference amplifier that combines

excellent dc performance with high common-mode rejection

over a wide range of frequencies. When used to scale high

voltages, it allows simple conversion of standard control

voltages or currents for use with single-supply ADCs. A

wideband feedback loop minimizes distortion effects due to

capacitor charging of ∑-∆ ADCs.

= ±2.5V

100

FREQUENCY (Hz)

10k

100k

Figure 2. CMRR vs. Frequency of the AD628

A reference pin (V_REF) provides a dc offset for converting

bipolar to single-sided signals. The AD628 converts +5 V, +10 V,

5 V, 10 V, and 4 to 20 mA input signals to a single-ended

output within the input range of single-supply ADCs.

A precision 10 kΩ resistor connected to an external pin is

provided for either a low-pass filter or to attenuate large

differential input signals. A single capacitor implements a low-

pass filter. The AD628 operates from single and dual supplies and

is available in an 8-lead SOIC or MSOP package. It operates over

the standard industrial temperature range of −40°C to +85°C.

The AD628 has an input common-mode and differential

mode operating range of 120 V. The high common-mode

input impedance makes the device well suited for high voltage

measurements across a shunt resistor. The buffer amplifier’s

inverting input is available for making a remote Kelvin

connection.

Rev. C

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

Fax: 781.326.8703

www.analog.com

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AD628AR-REEL7 替代型号

型号	品牌	替代类型	描述	数据表
AD628ARZ-RL	ADI	完全替代	High Common-Mode Voltage, Programmable Gain Difference Amplifier
AD628AR	ADI	类似代替	High Common-Mode Voltage Programmable Gain Difference Amplifier
AD628ARZ	ADI	功能相似	High Common-Mode Voltage, Programmable Gain Difference Amplifier

与AD628AR-REEL7相关器件

型号	品牌	获取价格	描述	数据表
AD628ARZ	ADI	获取价格	High Common-Mode Voltage, Programmable Gain Difference Amplifier
AD628ARZ-R7	ADI	获取价格	High Common-Mode Voltage, Programmable Gain Difference Amplifier
AD628ARZ-REEL	ADI	获取价格	OP-AMP, 1500uV OFFSET-MAX, PDSO8, MS-012AA, SOIC-8
AD628ARZ-REEL7	ADI	获取价格	OP-AMP, 1500uV OFFSET-MAX, PDSO8, MS-012AA, SOIC-8
AD628ARZ-RL	ADI	获取价格	High Common-Mode Voltage, Programmable Gain Difference Amplifier
AD628-EVAL	ADI	获取价格	High Common-Mode Voltage Programmable Gain Difference Amplifier
AD629	AAVID	获取价格	Very Low Distortion, Precision Difference Amplifier
AD629	ADI	获取价格	High Common-Mode Voltage Difference Amplifier
AD629_07	ADI	获取价格	High Common-Mode Voltage, Difference Amplifier
AD629A	ADI	获取价格	High Common-Mode Voltage Difference Amplifier

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