CS5521-ASZ

Analog To Digital Converters (ADC) Overview

The CS5521-ASZ is a two-channel, 16-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 and a programmable gain amplifier (PGA). It supports scalable bipolar or unipolar input spans ranging from 25 mV to 5 V when using a 2.5 V reference. The ADC features an easy-to-use three-wire serial interface compatible with SPI and Microwire protocols, along with system and self-calibration capabilities for accurate measurements in process control applications.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with integrated chopper-stabilized instrumentation amplifier
• Scalable input spans: 25 mV, 55 mV, 100 mV, 1 V, 2.5 V, and 5 V
• Three-wire serial interface compatible with SPI and Microwire
• System and self-calibration functions with accessible calibration registers

Analog To Digital Converters (ADC) Applications

• Process control systems requiring isolated signal measurement
• Ground-based thermocouple applications utilizing charge pump drive
• Low-level signal acquisition in industrial environments

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'ASZ' against the manufacturer's ordering information to confirm package type and temperature range specifications. Ensure compatibility with the required voltage reference and clock frequency before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the CS5521-ASZ for applications requiring two differential channels with 16-bit accuracy. Consider the CS5523-ASZ if four channels are needed. Verify that the external clock frequency supports the desired output word rate, as performance varies between 32.768 kHz and higher frequencies up to 130 kHz.

Analog To Digital Converters (ADC) Part Context

The CS5521 belongs to the CS552x family of highly integrated ADCs. This family includes variants with different channel counts (two, four, eight) and resolutions (16-bit and 24-bit). The CS5521 specifically provides the two-channel configuration within the 16-bit performance tier.

Analog To Digital Converters (ADC) Replacement Considerations

The CS5523-ASZ serves as a direct functional substitute for designs requiring additional channels, offering four channels with identical 16-bit resolution and pin-compatible architecture.