CS5531-ASZR

Analog To Digital Converters (ADC) Overview

The CS5531-ASZR is a 16-bit delta-sigma analog-to-digital converter (ADC) manufactured by Cirrus Logic Inc. It features a chopper-stabilized programmable gain instrumentation amplifier (PGIA) with selectable gains from 1x to 64x and an input noise density of 12 nV/√Hz at 0.1 Hz. The device supports two differential input channels and offers twenty selectable output word rates ranging from 6.25 to 3,840 Sps. It utilizes a three-wire serial interface compatible with SPI and Microwire standards. The component operates within an ambient temperature range of -40°C to +85°C and is housed in a 24-pin SSOP package.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with linearity error of ±0.003% FS
• Chopper-stabilized PGIA with gains of 1x, 2x, 4x, 8x, 16x, 32x, and 64x
• Two-channel differential multiplexer with selectable 50 or 60 Hz rejection
• Three-wire serial interface (SPI/Microwire compatible)

Analog To Digital Converters (ADC) Applications

• Weigh scale systems
• Process control instrumentation
• Scientific measurement equipment
• Medical devices

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and environmental compliance status. Check for End-of-Life notifications or Product Change Notices that may affect long-term availability or manufacturing parameters. Ensure the source document matches the exact part number CS5531-ASZR.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring low-noise amplification of small differential signals. The integrated PGIA eliminates the need for external amplifiers in many scenarios. Verify that the required input span and output data rate align with the available calibration ranges and filter settings. Confirm power supply configurations match the system design constraints.

Analog To Digital Converters (ADC) Part Context

This part belongs to the CS5531/32/33/34-AS family of high-performance ADCs. The CS5531 variant specifically provides 16-bit performance, whereas the CS5532 variant offers 24-bit resolution. Both share similar architectural features including the chopper-stabilized amplifier and digital filter structure.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.