AIX Omnibus Module: 2 MHz 4-Channel Analog Input

• Overview

• Feature Summary

• Specifications and Data Sheets

• Block Diagram

• Return to M62/67 Base Board Page

• About the Design and Manufacture of the AIX

• Analog I/O Breakout Panel

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The AIX has four (4) channels of 2.5 MHz, 16 bit A/D input, ideal for high-speed data acquisition and transient capture.  The AIX uses a new hybrid sigma-delta A/D converter from Analog Devices that delivers high performance 16-bit precision at an affordable price.  The A/D uses a unique pipelined architecture that samples input at up to 20 MHz and digitally filters intermediate date for accurate results.  The A/D delivers 2.5 MHz data from a filter pipeline eight samples deep, resulting in low data latency--a requirement for servo and other control applications that need low latency feedback. The AIX20 module reconfigures the filter to eliminate oversampling, providing 12-bit results at rates up to 20 MHz 

Each AIX A/D channel has an anti-alias filter and gain/offset error adjustments for accurate measurements and each A/D channel has an 8K sample FIFO to allow efficient data collection and transport to the DSP host card.  This allows the DSP to collect the data from the A/D as single points, or as a data set of up to 8K samples in size thus reducing the interrupt rate to the host DSP.  Full speed, continuous data acquisition is supported on the DSP depending on sample rate and DSP processing and calculation load.

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

AIX Feature Summary

• Four (4) 16-bit, 2.5MHz A/D with 8K sample FIFOs; AIX20 module provides 4-channel 12-bit input at at rates up to 20 MHz

• A/Ds are paired on DSP bus as 32-bit values; each 16-bit half is one A/D

• DSP sees the FIFOs as memory-mapped and can control and access half-full, full, and not-empty flags

• Compatible with M62/67 PCI and cPCI boards

• Supported by DirectDSP, and Hypersignal software

• AIX Module (132 KB)

• A/D Converters: Analog Devices AD9260 (360,680 Bytes)