AD8479:  Very High Common-Mode Voltage Precision Difference Amplifier

Product Details

Product Status:Recommended for New Designs

The AD8479 is a difference amplifier with a very high input common-mode voltage range. The AD8479 is a precision device that allows the user to accurately measure differential signals in the presence of high common-mode voltages up to ±600 V. The AD8479 can replace costly isolation amplifiers in applications that do not require galvanic isolation. The device operates over a ±600 V common-mode voltage range and has inputs that are protected from common-mode or differential mode transients up to ±600 V.

The AD8479 has low offset, low offset drift, low gain error drift, low common-mode rejection drift, and excellent CMRR over a wide frequency range.

The AD8479 is available in a space-saving 8-lead SOIC package. It is operational over the −40°C to +125°C temperature range.

APPLICATIONS

  • High voltage current sensing
  • Battery cell voltage monitor
  • Power supply current monitor
  • Motor controls
  • Isolation

FEATURES and BENEFITS

  • ±600 V common-mode voltage range
  • Rail-to-rail output
  • Fixed gain of 1
  • Wide power supply range of
    ±2.5 V to ±18 V
  • 550 μA typical power supply current
  • Excellent ac specifications
    -- 90 dB minimum CMRR
    -- 130 kHz bandwidth
  • High accuracy dc performance
    -- 5 ppm maximum gain nonlinearity
    -- 10 µV/°C maximum offset voltage drift
    -- 5 ppm/°C maximum gain drift

Functional Block Diagram for AD8479

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD8479 SPICE Macro Model SPICE Models 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.

SampleSample & Buy

Price, packaging, availability

AD8479 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8479ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $3.37 $2.81 Y  Material Info Notify Me Purchase Sample
AD8479ARZ-RL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $2.81 Y  Material Info Notify Me Purchase
AD8479BRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $5.20 $4.33 Y  Material Info Notify Me Purchase Sample
AD8479BRZ-RL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $4.33 Y  Material Info Notify Me 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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