Datasheet > AD8290

AD8290

更新时间： 2024-11-20 04:30:59

品牌	Logo	应用领域
亚德诺 - ADI		传感器放大器
页数	文件大小	规格书
20页	455K
描述
G = 50, CMOS Sensor Amplifier with Current Excitation

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AD8290 数据手册

G = 50, CMOS Sensor Amplifier

with Current Excitation

AD8290

FEATURES

GENERAL DESCRIPTION

Supply voltage range: 2.6 V to 5.5 V

Low power

1.2 mA + 2× excitation current

0.5 μA shutdown current

Low input bias current: 100 pA

High CMRR: 120 dB

Space savings: 16-lead, 3.0 mm × 3.0 mm × 0.55 mm LFCSP

Excitation current

The AD8290 contains both an adjustable current source to

drive a sensor and a difference amplifier to amplify the signal

voltage. The amplifier is set for a fixed gain of 50. The AD8290

is an excellent solution for both the drive and the sensing aspects

required for pressure, temperature, and strain gage bridges.

In addition, because the AD8290 operates with low power,

works with a range of low supply voltages, and is available in a

low profile package, it is suitable for drive/sense circuits in

portable electronics as well.

300 μA to 1300 μA range

Set with external resistor

The AD8290 is available in a lead free 3.0 mm × 3.0 mm ×

0.55 mm package and is operational over the industrial

temperature range of −40°C to +85°C.

APPLICATIONS

Bridge and sensor drives

Portable electronics

FUNCTIONAL BLOCK DIAGRAM

FILTER

ENBL

SET

GND

BRIDGE

ADC

ANTI-

ALIASING

FILTER

AD8290

REF

Figure 1.

Rev. B

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 registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700 www.analog.com

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