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AD8208:  High Voltage, Precision Difference Amplifier

Product Details

Product Status:Recommended for New Designs

The AD8208 is a single-supply difference amplifier ideal for amplifying and low-pass filtering small differential voltages in the presence of a large common-mode voltage. The input common-mode voltage range extends from −2 V to +45 V at a single +5 V supply. The AD8208 is qualified per AEC-Q100 specifications. The amplifier offers enhanced input overvoltage and ESD protection, and includes EMI filtering.

Automotive applications demand robust, precision components for improved system control. The AD8208 provides excellent ac and dc performance, minimizing errors in the application. Typical offset and gain drift are less than 5 µV/°C and 10 ppm/°C, respectively. The device also delivers a minimum CMRR of 80 dB from dc to 10 kHz.

The AD8208 features an externally accessible 100 kΩ resistor at the output of the preamplifier (A1), which can be used for low-pass filtering and for establishing gains other than 20.


Applications
  • High-side current sensing
  • Motor controls
  • Solenoid controls
  • Power management
  • Low-side current sensing
  • Diagnostic protection

FEATURES and BENEFITS

  • AEC-Q100 qualified
  • EMI filters included
  • High common-mode voltage range
    −2 V to +45 V operating
    −24 V to +80 V survival
  • Buffered output voltage
  • Gain = 20 V/V
  • Low-pass filter (single-pole or two-pole)
  • Wide operating temperature range
    8-lead SOP & MSOP: −40°C to +125°C
  • Excellent ac and dc performance
    ±1 mV voltage offset
    −5 ppm/°C typical gain drift
    80 dB CMRR minimum dc to 10 kHz

Functional Block Diagram

Documentation

Title Content Type File Type
AD8208: High Voltage, Precision Difference Amplifier Data Sheet (Rev C, 12/2013) (pdf, 324 kB) Data Sheets PDF
Industrial ICs
Industrial ICs Solutions Bulletin, Volume 10, Issue 8
Solutions Bulletins HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD8208 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

AD8208 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8208WBRMZ Status: Production 8 ld MSOP 8 Auto Tube, 50 $1.73 $1.67 Y  Material Info PCN Purchase
AD8208WBRMZ-R7 Status: Production 8 ld MSOP 8 Auto Reel, 1000 $1.73 $1.67 Y  Material Info PCN Purchase
AD8208WBRMZ-RL Status: Production 8 ld MSOP 8 Auto Reel, 3000 $1.73 $1.67 Y  Material Info PCN Purchase
AD8208WBRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $1.73 $1.67 Y  Material Info PCN Purchase Sample
AD8208WBRZ-R7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 $1.73 $1.67 Y  Material Info PCN Purchase
AD8208WBRZ-RL Status: Production 8 ld SOIC 8 Auto Reel, 2500 $1.73 $1.67 Y  Material Info PCN Purchase
AD8208WHRMZ Status: Production 8 ld MSOP 8 Auto Tube, 50 $2.47 $2.39 Y  Material Info PCN Purchase Sample
AD8208WHRMZ-RL Status: Production 8 ld MSOP 8 Auto Reel, 3000 - $2.39 Y  Material Info PCN Purchase
AD8208WHRZ Status: Production 8 ld SOIC 8 Auto Tube, 98 $2.47 $2.39 Y  Material Info PCN Purchase Sample
AD8208WHRZ-RL Status: Production 8 ld SOIC 8 Auto Reel, 2500 - $2.39 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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