SINGLE SUPPLY, 12/16-BIT, 312.5/468.75KHZ, SIGMA DELTA ADC

Introduction

This Application Note describes the evaluation board for the AD7721 12/16-bit A/D converter. The AD7721 is a complete low power, 12/16-bit, sigma-delta ADC which operates from +5 V supply. The device consists of a modulator and 2 FIR filters which filter and decimate the modulator output. Its versatile interface structure allows both serial and parallel connection to a microprocessor, the device connecting directly to Analog Devices, Motorola and Texas Instruments Digital Signal Processors. Full data on the AD7721 is available in the AD7721 data sheet available from Analog Devices and should be consulted in conjunction with this Application Note when using the evaluation board.

On-board components include an AD780 which is a +2.5 V ultra high precision bandgap reference, operational amplifiers which are used to filter the analog input and bias the input.

The evaluation board is compatible with the EVALUATION BOARD CONTROLLER.

Features

  • Full-Featured Evaluation Board for the AD7721
  • Evaluation Board Controller Compatible
  • Stand Alone Capability
  • On-Board Analog Filtering and Reference
  • Various Linking Options
  • PC Software for Control and Data Analysis when used with Evaluation Board Controller

Documentation

Technical notes are available in Adobe Acrobat Portable Document Format (PDF).
To download the Technical Note, select the link below:

Software

To download the software, select the link below:

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