CS5566-ISZ

Analog To Digital Converters (ADC) Overview

The CS5566-ISZ is a single-channel, 24-bit analog-to-digital converter (ADC) manufactured by Cirrus Logic Inc. It operates at a conversion rate of 5 kSps using delta-sigma architecture. The device features fully differential analog inputs and on-chip buffers that provide high input impedance for both AIN and VREF+ pins, reducing source drive requirements. It supports analog supply configurations of +5V/GND or ±2.5V, with digital I/O supplies ranging from 1.8V to 3.3V. Key performance metrics include a signal-to-noise ratio of 110 dB, linearity error of 0.0005%, and power consumption of 20 mW at 5 kSps. The component utilizes a simple three- or four-wire serial interface.

Analog To Digital Converters (ADC) Feature Summary

• 24-bit resolution with no missing codes and 110 dB signal-to-noise ratio
• On-chip buffers for high input impedance on analog inputs and reference
• Low latency digital filter settling in one conversion cycle
• Flexible power supply options: Analog +5V/GND or ±2.5V; Digital 1.8V–3.3V

Analog To Digital Converters (ADC) Applications

• High-resolution data acquisition systems requiring low noise
• Industrial process control applications with differential signals
• Scientific instrumentation needing precise voltage measurement
• Medical equipment utilizing low-power ADCs

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'ISZ' against the manufacturer's current datasheet to confirm package type and temperature range specifications. Ensure compatibility with existing board layouts regarding the 24-pin SSOP footprint. Confirm that the required analog supply voltage (+5V or ±2.5V) matches the system design before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the CS5566-ISZ when a single-channel, high-linearity ADC is required with minimal external buffering components. The on-chip buffers simplify front-end design by eliminating the need for external op-amps to drive the ADC inputs. Consider the 5 kSps throughput limit and ensure it meets the application's sampling speed requirements compared to higher-speed alternatives like the CS5571.

Analog To Digital Converters (ADC) Part Context

The CS5566 belongs to Cirrus Logic's family of precision delta-sigma ADCs designed for industrial and scientific applications. The '-ISZ' suffix typically denotes a specific package variant, often an SSOP, intended for surface-mount assembly. This part complements other models in the series by offering a balance between high resolution (24-bit) and moderate speed (5 kSps) with integrated signal conditioning features.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family may include other CS55xx series parts, but functional differences in channel count, speed, or supply voltage must be verified. For instance, the CS5566 differs from the CS5571 in resolution and speed. Any substitute must match the 24-bit resolution, differential input capability, and serial interface protocol.