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AD8290:  G = 50, CMOS Sensor Amplifier with Current Excitation

Product Details

Product Status:Recommended for New Designs

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.

Applications

  • Bridge and sensor drives
  • Portable electronics

FEATURES and BENEFITS

  • 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

Functional Block Diagram for AD8290

Documentation

Title Content Type File Type
AD8290: G = 50, CMOS Sensor Amplifier with Current Excitation Data Sheet (Rev B, 02/2008) (pdf, 530 kB) Data Sheets PDF
A Designer's Guide to Instrumentation Amplifiers (3rd Edition) Design Handbooks HTML
Auto-Zero Amplifiers  (doc, 75 kB)
A wide variety of electronic applications, especially those involving very small input signals, require signal paths with very low offset voltage and offset voltage drift over time and temperature.
Technical Articles DOC
High-performance Adder Uses Instrumentation Amplifiers
Make an adder circuit using instrumentation amplifiers to increase input impedance.
(EDN, 9/3/2009)
Technical Articles HTML
Zero-Drift Amplifiers  (pdf, 0) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

AD8290 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8290ACPZ-R2 Status: Production 16 ld LFCSP 3x3x.55(1.70 EP) 16 Ind Reel, 250 $1.82 $1.82 Y  Material Info PCN Purchase
AD8290ACPZ-R7 Status: Production 16 ld LFCSP 3x3x.55(1.70 EP) 16 Ind Reel, 1500 - $1.52 Y  Material Info PCN Purchase Sample
AD8290ACPZ-RL Status: Production 16 ld LFCSP 3x3x.55(1.70 EP) 16 Ind Reel, 5000 - $1.52 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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