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AD8275:  G = 0.2, Level Translation, 16-Bit ADC Driver

Product Details

Product Status:Recommended for New Designs

Newer Alternatives: NEWER ALTERNATIVE:
- AD8476 amplifier with differential input and output with unity gain driver and 300uA low power dissipation.

The AD8275 is a G=0.2 difference amplifier that can be used to translate +/-10V signals to a +4V level. It solves the problem typically encountered in industrial and instrumentation where +/-10V signals must be interfaced to a single supply 4V or 5V ADC. The AD8275 interfaces the two signal levels, simplifying design.

The AD8275 has fast settle time and low distortion making it suitable for driving fast, successive approximation (SAR) ADCs. Its wide input voltage range and rail to rail outputs make it an easy to use building block. Single-supply operation reduces the power consumption of the amplifier and helps to protect the ADC from overdrive conditions.

Internal, matched, precision laser-trimmed resistors ensure low gain error, low gain drift of 1 ppm/°C (maximum), and high common-mode rejection of 80 dB. Low offset and low offset drift, combined with its fast settling time, make the AD8275 suitable for a variety of data acquisition applications where accurate and quick capture is required.

The AD8275 can be used as an analog front end, or it can follow buffers to level translate high voltages to a voltage range accepted by the ADC. In addition, the AD8275 can be configured for diff-erential outputs if used with a differential ADC. The AD8275 is available in a space-saving, 8-lead MSOP and is specified for performance over the −40°C to +85°C temperature range.

Applications

  • Level Translator
  • ADC Driver
  • Automated test equipment
  • Instrumentation Amplifier Building Block
  • FEATURES and BENEFITS

    • Translates ±10V to +4V
    • Drives 16-bit SAR ADCs
    • Small MSOP Package
    • Input overvoltage: +40 V to −35 V (VS = 5 V)
    • Fast settling time: 450 ns to 0.001%
    • Rail-to-rail output
    • Wide Supply Operation: +3.3V to +15V
    • High CMRR: 96 dB
    • Low gain drift: 1 ppm/°C
    • Low offset drift: 2.5 μV/°C

    Functional Block Diagram for AD8275

    Documentation

    Title Content Type File Type
    AD8275: G = 0.2, Level Translation, 16-Bit ADC Driver Data Sheet (Rev A, 08/2010) (pdf, 560 kB) Data Sheets PDF
    CN-0225: High Impedance, High CMR, ±10 V Analog Front End Signal Conditioner for Industrial Process Control and Automation  (pdf, 640 kB) Circuit Note PDF
    CN-0213:Complete High Speed, High CMRR Precision Analog Front End for Process Control  (pdf, 288 kB) Circuit Note PDF
    AD8275: 16 Bit Attenuating ADC Driver Interfaces HV Sensors to ADC
    Learn how to simplify design and reduce cost by using a single IC to interface +/-10V industrial signals to a +5V single-supply ADC.
    Videos HTML
    SAR ADC & Driver Quick-Match Guide  (pdf, 251 kB)
    Find drivers for ADI's most popular single-ended and differential SAR ADCs based on your specific application conditions.
    Product Selection Guide PDF
    ADC Drivers Overview HTML
    Test & Instrumentation Solutions Bulletin, Volume 10, Issue 3  (pdf, 1334 kB) Solutions Bulletins PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    AD8275 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.

    Product Recommendations & Reference Designs

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    Price, packaging, availability

    AD8275 Model Options
    Model Package Pins Temp.
    Range
    Packing,
    Qty
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD8275ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $1.92 $1.60 Y  Material Info Notify Me Purchase Sample
    AD8275ARMZ-R7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $1.60 Y  Material Info Notify Me Purchase
    AD8275ARMZ-RL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $1.60 Y  Material Info Notify Me Purchase
    AD8275BRMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $2.70 $2.25 Y  Material Info Notify Me Purchase Sample
    AD8275BRMZ-R7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $2.25 Y  Material Info Notify Me Purchase
    AD8275BRMZ-RL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $2.25 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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