Alternative Parts

  • AD8476
    AD8476

    Low Power, Unity Gain Fully Differential Amplifier & ADC Driver

Overview

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

Product Details

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
  • Product Lifecycle icon-recommended Production

    At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

    Tools & Simulations

    SPICE Models

    Design Tools

    ADIsimPE Linear and Mixed-Signal Circuit Simulator – Personal Edition

    ADIsimPE, which is powered by SIMetrix/SIMPLIS, is a circuit simulation suite optimized for the design and development of analog and mixed signal circuits. SIMetrix mode is ideal for the simulation of general non-switching circuits. It provides full Pspice compatibility for use with industry-standard SPICE models. SIMPLIS (SIMulation Piecewise-Linear System) mode simulates the operation of switching circuits with vastly improved robustness, speed, and accuracy compared to standard SPICE. It is particularly useful for switching power supply, PLLs, and ADC/DAC applications.

    Reference Designs (4)

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

    PCN-PDN Information

    Discussions

    AD8275 Discussions

    RE: AD8275 questions
    14 week(s) ago in Differential Amplifiers
    RE: AD8275 Accuracy Problem
    14 week(s) ago in Differential Amplifiers
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    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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