CS5550-ISZ

Analog To Digital Converters (ADC) Overview

The CS5550-ISZ is a dual-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 for AIN1± and supports GND-referenced signals with a single supply. Key specifications include an on-chip 2.5 V reference voltage with a typical temperature coefficient of 25 ppm/°C. Power consumption is less than 12 mW when the digital supply (VD+) is 3.3 V. The component utilizes a simple three-wire digital serial interface for communication with microcontrollers.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel architecture with integrated offset and gain calibration capabilities
• On-chip 2.5 V voltage reference with 25 ppm/°C typical temperature coefficient
• Low power consumption under 12 mW at VD+ = 3.3 V
• Adjustable differential input range on AIN1± channel

Analog To Digital Converters (ADC) Applications

• Electronic weighing systems
• Industrial process control
• Energy metering applications

Analog To Digital Converters (ADC) Procurement Notes

Verify that the specific part number matches the lead-free RoHS compliant variant (CS5550-ISZ). Confirm the operating temperature range requirements align with the specified -40°C to +85°C industrial grade limits. Ensure the design accommodates the 24-pin SSOP package dimensions and surface mount installation type.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring dual-channel signal acquisition with moderate precision. The AIN1± channel offers higher performance with lower noise compared to AIN2±. Designers must account for the master clock frequency constraints, which typically utilize a crystal between 2.5 MHz and 5.0 MHz. Verify that the system can support the required SPI timing parameters for reliable data transfer.

Analog To Digital Converters (ADC) Part Context

The CS5550-ISZ belongs to the CS5550 series of data converters from Cirrus Logic. It is designed as a cost-effective solution for multi-channel measurement tasks. The 'ISZ' suffix indicates the lead-free version of the standard CS5550-IS in a 24-pin SSOP package. This part serves as a specialized ADC for instrumentation where power efficiency and integrated calibration are critical.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.