CS5521-ASZR

Analog To Digital Converters (ADC) Overview

The CS5521-ASZR is a 16-bit, two-channel analog-to-digital converter (ADC) from Cirrus Logic. It utilizes fourth-order delta-sigma modulation and includes a chopper-stabilized instrumentation amplifier with low input current. The device supports scalable bipolar or unipolar input spans ranging from 25 mV to 5 V via an integrated programmable gain amplifier (PGA). It operates on a single +5 V supply and features a three-wire serial interface compatible with SPI and Microwire protocols.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with selectable output word rates up to 401 Sps using a 130 kHz clock
• Integrated chopper-stabilized instrumentation amplifier with 100 pA input current
• Programmable gain amplifier supporting input spans of 25 mV, 55 mV, 100 mV, 1 V, 2.5 V, and 5 V
• On-chip charge pump drive for negative bias voltage generation

Analog To Digital Converters (ADC) Applications

• Process control applications requiring measurement of isolated and non-isolated low-level signals
• Ground-based thermocouple measurements utilizing the charge pump drive feature
• Temperature and pressure sensing systems

Analog To Digital Converters (ADC) Procurement Notes

Verify component authenticity through authorized distributors. Confirm package integrity and pin alignment prior to installation. Review the manufacturer datasheet for handling precautions and storage conditions to ensure long-term reliability in operational environments.

Analog To Digital Converters (ADC) Selection Notes

Select this model for applications requiring 16-bit precision and dual differential inputs. Ensure the system clock frequency does not exceed 130 kHz for optimal performance. Verify that the required input span aligns with the supported PGA ranges and that the power supply constraints match the single +5 V requirement.

Analog To Digital Converters (ADC) Part Context

This component belongs to the CS552x family of high-integration ADCs. The CS5521 variant specifically provides two channels, whereas other members like the CS5523 offer four channels and the CS5528 offers eight channels. All variants share similar architectural features including delta-sigma conversion and programmable gain capabilities.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements within the same family include the CS5522, which offers 24-bit resolution for the same two-channel configuration. For higher channel counts, the CS5523 (four-channel) or CS5528 (eight-channel) may be considered if additional inputs are required.