CS5528-ASZ

Analog To Digital Converters (ADC) Overview

The CS5528-ASZ is a highly integrated 24-bit delta-sigma analog-to-digital converter (ADC) featuring eight differential input channels. It incorporates a chopper-stabilized instrumentation amplifier with low input current and a programmable gain amplifier (PGA). The device operates on a single +5 V supply, utilizing an internal charge pump to generate a negative bias voltage for the amplifiers. It supports selectable input spans ranging from 25 mV to 100 V and provides eight configurable output word rates up to 617 Sps. Communication is handled via a three-wire serial interface compatible with SPI and Microwire standards.

Analog To Digital Converters (ADC) Feature Summary

• Eight-channel architecture with 24-bit resolution and fourth-order delta-sigma modulation
• Chopper-stabilized instrumentation amplifier with 100 pA maximum input current
• Scalable input span support from 25 mV to 100 V using PGA and external references
• Integrated charge pump drive for generating negative bias voltage in single-supply applications

Analog To Digital Converters (ADC) Applications

• Process control systems requiring multi-channel signal acquisition
• Ground-based thermocouple measurement circuits
• Low-level signal monitoring in industrial automation
• Bridge sensor interfaces in weighing scales

Analog To Digital Converters (ADC) Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for End-of-Life notifications, as Cirrus Logic has issued discontinuation notices for specific variants within this family. Ensure ordering suffixes match required packaging and temperature grades.

Analog To Digital Converters (ADC) Selection Notes

Select the CS5528-ASZ when eight simultaneous differential inputs are required. This model is appropriate for applications needing high accuracy with low-level signals due to its ultra-low input current. Consider the CS5524 if only four channels are needed, or the CS5523/CS5521 for 16-bit resolution requirements. Verify that the system clock frequency supports the desired output data rate.

Analog To Digital Converters (ADC) Part Context

The CS5528 belongs to the CS552x series of delta-sigma ADCs manufactured by Cirrus Logic. It shares architectural similarities with the CS5521, CS5522, CS5523, and CS5524, differing primarily in channel count and resolution. The 'ASZ' suffix typically denotes a lead-free, RoHS-compliant variant in the SSOP package.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Cirrus Logic for current alternative recommendations or pin-compatible upgrades.