CS5509-ASZR

Analog To Digital Converters (ADC) Overview

The CS5509-ASZR is a single-supply, 16-bit analog-to-digital converter (ADC) from Cirrus Logic. It utilizes delta-sigma architecture with an on-chip digital filter and self-calibration circuitry. The device supports differential inputs with pin-selectable unipolar or bipolar ranges. It operates with a master clock between 30 kHz and 330 kHz, achieving output update rates up to 200 samples per second. Key electrical parameters include a linearity error of ±0.0015% FS at 32.768 kHz, common mode rejection of 105 dB at DC and 120 dB at 50/60 Hz, and ultra-low power dissipation of 1.7 mW. The component is housed in a 16-pin SOIC package.

Analog To Digital Converters (ADC) Feature Summary

• 16-bit resolution with no missing codes and ±0.0015% FS linearity error
• On-chip self-calibration circuitry for offset and gain correction
• Pin-selectable unipolar/bipolar input ranges with high common mode rejection
• Ultra-low power consumption of 1.7 mW

Analog To Digital Converters (ADC) Applications

• Loop-powered transmitters
• Panel meters
• Weigh scales
• Battery-powered instruments

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix ASZR corresponds to the 16-pin SOIC package and industrial temperature range (-40°C to +85°C). Confirm RoHS compliance status as indicated in current distributor documentation. Check for any product change notifications regarding packaging or labeling updates prior to procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring low-power, high-resolution DC signal measurement. Ensure the system clock frequency allows for the desired output data rate; 32.768 kHz provides optimal 50/60 Hz line rejection. Verify that the source impedance meets the settling time requirements for the internal sampling capacitors to maintain accuracy.

Analog To Digital Converters (ADC) Part Context

The CS5509 is part of Cirrus Logic's single-supply ADC family designed for precision measurement. It integrates a voltage reference, calibration microcontroller, and serial interface into a monolithic CMOS device. The -ASZR suffix denotes the lead-free, tape-and-reel variant suitable for automated surface-mount assembly.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate other 16-bit delta-sigma ADCs with similar SPI interfaces and low power profiles if direct replacement is required.