CS5524-ASZ

Analog To Digital Converters (ADC) Overview

The CS5524-ASZ is a four-channel, 24-bit analog-to-digital converter (ADC) from Cirrus Logic. It utilizes fourth-order delta-sigma modulation and charge-balance techniques to achieve high precision. The device integrates a chopper-stabilized instrumentation amplifier with low input current (100 pA) and a programmable gain amplifier (PGA). It supports scalable input spans ranging from 25 mV to 5 V with a 2.5 V reference, or up to 100 V externally. Operating on a single +5 V supply, it features an eight-selectable output word rate digital filter that rejects 50/60 Hz interference below 30 Sps. The component includes system and self-calibration capabilities and communicates via a three-wire serial interface compatible with SPI and Microwire.

Analog To Digital Converters (ADC) Feature Summary

• Four-channel architecture with integrated chopper-stabilized instrumentation amplifier
• 24-bit resolution with selectable input spans (25 mV to 5 V internal; up to 100 V external)
• Digital filter provides eight selectable output rates (1.88 Sps to 617 Sps) with simultaneous 50/60 Hz rejection
• Single +5 V power supply operation with internal charge pump drive for negative bias

Analog To Digital Converters (ADC) Applications

• Process control systems requiring isolated and non-isolated low-level signal measurement
• Ground-based thermocouple applications utilizing the on-chip charge pump drive
• Multi-channel data acquisition systems needing high accuracy and low noise

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'ASZ' against the manufacturer's ordering information to confirm package type and environmental compliance status. Ensure the design accounts for the required negative bias voltage generation if using low input ranges, as the charge pump drive characteristics are critical for proper amplifier operation in these configurations.

Analog To Digital Converters (ADC) Selection Notes

Select the CS5524-ASZ when four differential channels are required with 24-bit performance. Compare against CS5523 (16-bit) if lower resolution suffices, or CS5528 (eight-channel) if more inputs are needed. Consider the maximum clock frequency limits (200 kHz for this 24-bit variant) when determining the maximum achievable throughput speed relative to the desired output word rate.

Analog To Digital Converters (ADC) Part Context

The CS5524 belongs to the CS5521/22/23/24/28 family of highly integrated ADCs. While sharing core delta-sigma architecture and peripheral features like the serial interface and calibration registers, the CS5524 is distinctively defined by its four-channel multiplexer configuration and 24-bit resolution class, differentiating it from the two-channel CS5522 and eight-channel CS5528.

Analog To Digital Converters (ADC) Replacement Considerations

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