CS5522-ASZ

Analog To Digital Converters (ADC) Overview

The CS5522-ASZ is a 24-bit, two-channel analog-to-digital converter (ADC) from Cirrus Logic. It utilizes a fourth-order delta-sigma architecture with an integrated chopper-stabilized instrumentation amplifier and programmable gain amplifier (PGA). The device operates on a single +5 V supply and features a three-wire serial interface compatible with SPI and Microwire standards. Key specifications include selectable input spans ranging from 25 mV to 5 V, system and self-calibration capabilities, and output word rates up to 617 Sps with a 200 kHz clock. It is designed for process control applications requiring high precision and low noise.

Analog To Digital Converters (ADC) Feature Summary

• 24-bit resolution with integrated PGA and chopper-stabilized instrumentation amplifier
• Two differential input channels with selectable spans (25 mV to 5 V)
• Three-wire serial interface compatible with SPI and Microwire
• System and self-calibration registers per channel

Analog To Digital Converters (ADC) Applications

• Process control systems
• Weighing scales
• Industrial sensor interfaces

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'ASZ' against current manufacturer documentation to confirm package type and environmental compliance status. Check for End-of-Life notifications or Product Change Notices as these components may have limited availability or obsolescence risks. Confirm pin compatibility if replacing older variants within the CS552x family.

Analog To Digital Converters (ADC) Selection Notes

Select the CS5522-ASZ when 24-bit resolution and two-channel input are required. Ensure the application supports a single +5 V analog supply and a digital supply between 3 V and 5 V. Verify that the external reference voltage falls within the 1 V to 5 V range. Consider the CS5521-ASZ if 16-bit resolution is sufficient, or the CS5523/24 series for four-channel requirements.

Analog To Digital Converters (ADC) Part Context

The CS5522-ASZ belongs to the CS5521/22/23/24/28 family of delta-sigma ADCs. This family shares common architectural features such as the chopper-stabilized front-end and calibration logic. The primary distinction of the CS5522 variant is its two-channel configuration, whereas other members offer one, four, or eight channels. All devices in this series utilize similar register structures and serial communication protocols.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include the CS5521-ASZ (16-bit, 2-channel) or CS5523-ASZ (16-bit, 4-channel). For higher resolution, the CS5524-ASZ offers 24-bit performance with four channels. Cross-family replacements require careful evaluation of pinout, power supply requirements, and software register mapping.