CS5533-ASZR

Analog To Digital Converters (ADC) Overview

The CS5533-ASZR is a four-channel, 16-bit Sigma-Delta Analog-to-Digital Converter (ADC) from Cirrus Logic. It integrates a chopper-stabilized Programmable Gain Instrumentation Amplifier (PGIA) with gains ranging from 1x to 64x and selectable output word rates between 6.25 Sps and 3,840 Sps. The device features a three-wire serial interface compatible with SPI and Microwire protocols. It operates on analog supplies of +5 V/0 V, ±2.5 V, or ±3 V, with digital logic levels of 3 V to 5 V. Key specifications include a linearity error of ±0.003% FS, input current of 1,200 pA at gains above 1x, and an operating temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Four-channel differential multiplexer with chopper-stabilized PGIA (1x–64x gain).
• 16-bit resolution with ±0.003% maximum linearity error and no missing codes.
• Selectable output word rates from 6.25 Sps to 3,840 Sps with 50/60 Hz rejection options.
• Three-wire serial interface (SPI/Microwire compatible) with per-channel calibration registers.

Analog To Digital Converters (ADC) Applications

• Weigh scale systems requiring high precision for low-level signals.
• Process control instrumentation for industrial monitoring.
• Scientific measurement equipment needing ultra-low noise performance.
• Medical devices utilizing differential signal acquisition.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm package type and tape/reel specifications. Check for Product Change Notices (PCNs) regarding label changes or manufacturing site updates. Ensure compatibility with existing system power supply configurations (+5V single or ±2.5V/±3V dual) before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the CS5533 variant specifically for four-channel applications; use CS5531 for two channels. Confirm that the required gain settings (up to 64x) and input spans align with the PGIA capabilities. Ensure the microcontroller supports the three-wire serial interface timing requirements. Verify that the external clock frequency matches the internal filter settling time calculations for the desired output data rate.

Analog To Digital Converters (ADC) Part Context

The CS5533 belongs to the CS5531/32/33/34-AS family of highly integrated ADCs. This series utilizes charge-balance techniques to achieve high dynamic range performance. The CS5533 specifically provides four channels, whereas the CS5531 offers two channels. Both are 16-bit devices, distinct from the 24-bit CS5532 and CS5534 counterparts in the same family.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult the manufacturer's official cross-reference documentation for equivalent components.