CS5526-BSZR

Analog To Digital Converters (ADC) Overview

The CS5526-BSZR is a 20-bit, multi-range analog-to-digital converter (ADC) from Cirrus Logic. It features a delta-sigma architecture with an integrated chopper-stabilized instrumentation amplifier and programmable gain amplifier. The device supports input ranges of 25 mV to 5 V and provides noise-free resolution of 18 bits. It operates on a single +5 V analog supply and accepts digital supplies of +3.0 V or +5 V. Key specifications include a linearity error of ±0.0015% FS, simultaneous 50/60 Hz noise rejection, and output word rates ranging from 3.76 Sps to 202 Sps depending on the clock frequency.

Analog To Digital Converters (ADC) Feature Summary

• 20-bit resolution with 18-bit noise-free performance
• Integrated chopper-stabilized instrumentation amplifier
• Programmable input ranges: 25 mV, 55 mV, 100 mV, 1 V, 2.5 V, and 5 V
• On-chip charge pump drive circuitry for negative bias generation
• 4-bit output latch and simple three-wire serial interface

Analog To Digital Converters (ADC) Applications

• Thermocouple temperature measurements
• Ratiometric bridge transducer outputs
• Process control systems
• Medical applications requiring low-level signal measurement

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'BSZR' against manufacturer documentation to confirm package type and tape/reel specifications. Check for End-of-Life (EOL) notifications or Product Change Notices (PCN) as these components may have limited availability or superseded variants. Ensure compatibility with existing PCB footprints and serial interface timing requirements.

Analog To Digital Converters (ADC) Selection Notes

Select the CS5526 over the CS5525 when 20-bit resolution is required. Choose this component for applications needing bipolar ground-referenced signals down to ±100 mV using the internal charge pump. Consider the 32.768 kHz or 100 kHz clock options based on desired output data rates and power consumption constraints.

Analog To Digital Converters (ADC) Part Context

The CS5526 is part of the CS5525/CS5526 family of highly integrated delta-sigma ADCs. It shares pin compatibility and core functionality with the 16-bit CS5525 but offers higher resolution. The series is designed for precision measurement tasks where low noise and high linearity are critical.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Evaluate pin-compatible alternatives within the same family or consult manufacturer guidelines for obsolescence management.