MAX125CCAX+

ADCs/DACs - Special Purpose Overview

The MAX125CCAX+ is a high-speed, multichannel, 14-bit data-acquisition system (DAS) featuring four simultaneous-sampling track/hold amplifiers. It integrates a successive-approximation ADC with a 3µs conversion time per channel and an internal +2.5V reference. The device supports ±5V analog input ranges and operates on ±5V supplies. It includes a programmable on-board sequencer for converting one to four channels per CONVST pulse and provides a high-speed parallel DSP interface. The part is housed in a 36-pin SSOP package and operates within a commercial temperature range of 0°C to +70°C.

ADCs/DACs - Special Purpose Feature Summary

• Four simultaneous-sampling T/H amplifiers with two multiplexed inputs each, totaling eight single-ended inputs.
• Programmable on-board sequencer allows conversion of one, two, three, or four channels per CONVST pulse.
• Fault-protected input multiplexer tolerant to ±17V without IC damage.
• High-speed parallel DSP interface compatible with most popular digital signal processors.

ADCs/DACs - Special Purpose Applications

• Multiphase Motor Control
• Power-Grid Synchronization
• Digital Signal Processing

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'CCAX+' against the manufacturer's current ordering information to confirm the exact temperature range and RoHS compliance status. Ensure the source document explicitly lists this part number as available or discontinued, as availability changes frequently. Cross-reference the pin configuration and electrical characteristics with the latest datasheet revision to avoid integration errors.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX125 variant for ±5V input ranges; use MAX126 for ±2.5V ranges. The 'C' suffix denotes the commercial temperature range (0°C to +70°C), while 'E' indicates extended range (-40°C to +85°C). Ensure the application requires simultaneous sampling across multiple channels to justify the complexity over single-channel ADCs. Verify that the system can provide a TTL-compatible clock up to 16MHz for proper operation.

ADCs/DACs - Special Purpose Part Context

This component belongs to the MAX125/MAX126 family of 2x4-channel, simultaneous-sampling 14-bit DAS devices. These parts are designed for applications requiring precise phase relationship preservation among sampled signals. The family shares identical architecture but differs in input voltage ranges and operating temperature grades defined by their ordering suffixes.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not provided in the verified source material. Users should consult Analog Devices or Maxim Integrated directly for current replacement recommendations or obsolescence notices regarding this specific part number.

ADCs/DACs - Special Purpose FAQ

What is the maximum input voltage tolerance for the analog inputs?

The input multiplexer is fault-protected and tolerant to ±17V. A fault condition on any channel will not harm the IC.

How many channels can be converted simultaneously per CONVST pulse?

The on-board sequencer can be programmed to convert one, two, three, or four channels per CONVST pulse. The default mode converts one channel.

What is the required supply voltage for the MAX125CCAX+?

The device requires ±5V supplies. Specifically, AVDD and DVDD are +5V ±5%, and AVSS is -5V ±5%.