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Analog Devices - CMOS Sensor Amplifier

Numéro de référence AD8290
Description CMOS Sensor Amplifier
Fabricant Analog Devices 
Logo Analog Devices 





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AD8290 fiche technique
FEATURES
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
300 μA to 1300 μA range
Set with external resistor
APPLICATIONS
Bridge and sensor drives
Portable electronics
G = 50, CMOS Sensor Amplifier
with Current Excitation
AD8290
GENERAL DESCRIPTION
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.
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.
CBRIDGE
FUNCTIONAL BLOCK DIAGRAM
CFILTER
ENBL
RSET
11
6
www.DataSheet.co.kr
5
3 2 VCC
13
10 GND
15
4
ANTI-
14
VREF AD8290
ALIASING
FILTER
NC NC NC NC NC NC
1 7 8 9 12 16
ADC
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2007–2008 Analog Devices, Inc. All rights reserved.
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