• Overview

• Feature Summary

• Specifications and Data Sheets

• Block Diagram

• Return to M62/67 Base Board Page

• About the Design and Manufacture of the A4D4

• Analog I/O Breakout Panel

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The four (4) analog inputs on the A4D4 modules are AD976A SAR A/D converters, which allow low data latency (delay) critical in control applications.   Each A/D channel on the A4D4 module also has a six-pole analog anti-alias filter and differential inputs for noise rejection.  The four (4) AD7846 SAR D/A channels on the A4D4 are commonly used as the control outputs for the A4D4.  Each is calibrated for gain and offset errors.   These may be used as control signals for many types of actuators, transducer and other electronic devices.

The A4D4 module plugs into the M62/67 PCI and cPCI base boards, with Texas Instruments C6701 166 MHz 32-bit floating-point DSP processor.

A4D4 Feature Summary

• Four (4) chan 16-bit, 200 kHz A/D in

• Four (4) chan 16-bit, 100 kHz D/A out

• Full multiplying mode supported for D/A operation (must be specified at time of order)

• Memory-mapped 32-bit result returned for each A/D pair

• Memory-mapped 16-bit interface to DSP

• Compatible with M62/67 PCI and cPCI boards

• Supported by DirectDSP, and Hypersignal software

• A4D4 Analog I/O Module (117 KB)

• A/D Converters: Analog Devices AD976 (236 KB)

• D/A Converters: Analog Devices AD7846 (561 KB)