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AD8290 датащи(PDF) 1 Page - Analog Devices |
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AD8290 датащи(HTML) 1 Page - Analog Devices |
1 / 21 page G = 50, CMOS Sensor Amplifier with Current Excitation AD8290 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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. 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 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. FUNCTIONAL BLOCK DIAGRAM VREF 14 15 13 11 6 5 3 4 10 2 ADC ANTI- ALIASING FILTER VCC GND ENBL CFILTER RSET AD8290 CBRIDGE NC NC NC NC NC NC 16 1 12 9 7 8 Figure 1. |
Аналогичный номер детали - AD8290_16 |
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Аналогичное описание - AD8290_16 |
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