CS5525-ASZR

Analog To Digital Converters (ADC) Overview

The CS5525-ASZR is a 16-bit delta-sigma analog-to-digital converter (ADC) manufactured by Cirrus Logic Inc. It integrates a chopper-stabilized instrumentation amplifier, a programmable gain amplifier (PGA), and an on-chip charge pump drive circuit. The device supports bipolar and unipolar input ranges of 25 mV, 55 mV, 100 mV, 1 V, 2.5 V, and 5 V. It features a simple three-wire serial interface compatible with SPI and Microwire standards. The ADC provides eight selectable output word rates ranging from 3.76 Sps to 616 Sps depending on the master clock frequency. It operates on a single +5 V analog supply and a +3.0 V or +5 V digital supply.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with 0.0015%FS linearity error and 18-bits noise-free resolution
• Integrated chopper-stabilized instrumentation amplifier with selectable PGA gains
• On-chip charge pump drive for generating negative bias voltage to measure ground-referenced signals
• Programmable output word rates from 3.76 Sps to 616 Sps with simultaneous 50/60 Hz noise rejection

Analog To Digital Converters (ADC) Applications

• Process control applications requiring isolated and non-isolated low-level signal measurement
• Thermocouple temperature measurements using ground-referenced inputs
• Ratiometric bridge transducer output measurement in medical and scientific instruments

Analog To Digital Converters (ADC) Procurement Notes

Verify the component status as End-of-Life (EOL) based on public distributor records indicating obsolescence dates around May 2026. Confirm the package type is 20-SSOP and check for RoHS compliance certificates. Ensure the specific suffix ASZR matches the required tape and reel packaging format if applicable.

Analog To Digital Converters (ADC) Selection Notes

Select the CS5525-ASZR when a 16-bit resolution is sufficient for the application, distinguishing it from the pin-compatible 20-bit CS5526. Consider the available master clock frequencies (32.768 kHz or 100 kHz) to determine the maximum achievable data rate. Verify that the single-supply architecture fits the system power constraints compared to dual-supply alternatives.

Analog To Digital Converters (ADC) Part Context

The CS5525 belongs to the CS552x family of highly integrated delta-sigma ADCs from Cirrus Logic. It is pin-compatible with the CS5526, which offers 20-bit resolution. The series is designed for precision measurement tasks where low noise and high linearity are critical, utilizing charge-balance techniques to achieve specified performance levels.

Analog To Digital Converters (ADC) Replacement Considerations

Public documentation confirms the CS5526 as a pin-compatible alternative within the same family, offering 20-bit resolution instead of 16-bit. No other direct cross-model substitutes are verified in the provided source material.