CS5550-ISZR

Analog To Digital Converters (ADC) Overview

The CS5550-ISZR is a two-channel, low-cost analog-to-digital converter (ADC) manufactured by Cirrus Logic. It integrates two delta-sigma modulators with digital filters and a serial interface on a single chip. The device features adjustable input ranges on AIN1± and supports GND-referenced signals with a single supply. Key electrical specifications include power consumption of less than 12 mW at VD+ = 3.3 V, an on-chip 2.5 V reference with 25 ppm/°C typical drift, and a simple three-wire digital serial interface. The component operates within a temperature range of -40 °C to +85 °C.

Analog To Digital Converters (ADC) Feature Summary

• Two-channel architecture with independent offset and gain calibration registers for each channel.
• On-chip 2.5 V voltage reference with typical temperature coefficient of 25 ppm/°C.
• Adjustable differential input range on Channel 1 (AIN1±) supporting gains of 10x and 50x.
• Low power consumption: <12 mW at VD+ = 3.3 V; Stand-by state consumes 6.75 mW.

Analog To Digital Converters (ADC) Applications

• Process control applications requiring measurement of isolated and non-isolated low-level signals.
• Industrial automation systems utilizing GND-referenced signal inputs.
• Cost-sensitive data acquisition systems requiring dual-channel precision.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix 'ISZR' against current manufacturer documentation to confirm package type and lead-free status. Confirm availability as distribution channels may vary. Ensure compatibility with existing system clock frequencies and serial interface timing requirements before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring two differential channels with integrated calibration capabilities. Verify that the required input signal range fits within the specified limits for AIN1± (up to 500 mV p-p at Gain=10) and AIN2± (up to 500 mV p-p). Ensure the system can provide the necessary master clock frequency between 2.5 MHz and 5 MHz via the XIN pin.

Analog To Digital Converters (ADC) Part Context

The CS5550 belongs to Cirrus Logic's family of low-cost, high-performance analog-to-digital converters. It utilizes charge-balance techniques to achieve high accuracy. The ISZR suffix typically denotes a specific tape-and-reel packaging configuration for surface-mount assembly, distinct from tube-packaged variants like the ISZ.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Evaluate alternative dual-channel ADCs based on pin compatibility, serial interface protocol, and power supply requirements if replacement is necessary.