CS5528-ASZR

Analog To Digital Converters (ADC) Overview

The CS5528-ASZR is an eight-channel, 24-bit analog-to-digital converter (ADC) from Cirrus Logic. It utilizes a fourth-order delta-sigma architecture with a chopper-stabilized instrumentation amplifier and programmable gain amplifier (PGA). The device supports selectable input spans ranging from 25 mV to 10 V and operates on a single +5 V supply with a charge pump for negative bias generation. It features an SPI-compatible three-wire serial interface, system calibration capabilities, and output word rates up to 617 Sps. The component is housed in a 28-pin SSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Eight differential analog inputs with integrated multiplexer
• 24-bit resolution with ±0.0015% typical linearity error
• Selectable input spans: 25 mV, 55 mV, 100 mV, 1 V, 2.5 V, 5 V, and external up to 100 V
• Integrated charge pump drive for negative bias voltage generation

Analog To Digital Converters (ADC) Applications

• Process control systems requiring multi-channel signal acquisition
• Weighing scales and industrial load cell measurements
• Thermocouple temperature monitoring applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'ASZR' against current manufacturer documentation to confirm package type and tape-and-reel configuration. Check for End-of-Life notifications or Product Change Notices regarding the CS552x family, as availability may be restricted. Ensure compatibility with existing PCB footprints for the 28-SSOP package.

Analog To Digital Converters (ADC) Selection Notes

Select the CS5528-ASZR when eight simultaneous channels are required. For lower channel counts, consider the CS5523 (four-channel) or CS5521 (two-channel) variants within the same datasheet. Verify that the required input span matches the PGA settings and that the digital supply voltage aligns with the 3 V to 5 V operating range.

Analog To Digital Converters (ADC) Part Context

The CS5528 belongs to the CS5521/22/23/24/28 family of high-performance ADCs. These devices share a common architecture featuring chopper-stabilized amplifiers and delta-sigma modulation. The primary distinction among the family members is the number of available analog input channels, scaling from two to eight.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include the CS5524 (four-channel) if fewer inputs are needed. Cross-family substitutes such as the LTC2408 or LTC2414 offer similar channel counts but differ in architecture and interface requirements.