CS5505-ASZR

Analog To Digital Converters (ADC) Overview

The CS5505-ASZR is a 16-bit, four-channel pseudo-differential analog-to-digital converter (ADC) from Cirrus Logic. It utilizes delta-sigma charge-balance architecture with an on-chip digital filter and self-calibration circuitry. The device supports single +5V or dual ±5V power supplies, consuming as low as 1.7 mW in single-supply mode. It features a flexible serial interface compatible with industry-standard microcontrollers and offers output update rates up to 100 Sps. Key specifications include linearity error of ±0.0015% FS and selectable unipolar/bipolar input ranges.

Analog To Digital Converters (ADC) Feature Summary

• Four-channel pseudo-differential multiplexer with pin-selectable channel addressing
• On-chip self-calibration for minimum offset and full-scale errors
• Digital filter optimized for 32.768 kHz clock to reject 50/60 Hz interference
• Flexible serial port supporting both synchronous and standard microcontroller interfaces

Analog To Digital Converters (ADC) Applications

• Process control systems measuring low-frequency physical signals
• Industrial instrumentation requiring high linearity and low noise
• Biological and chemical process monitoring applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'A' indicates the -40°C to +85°C industrial temperature range and 'Z' denotes tape-and-reel packaging. Confirm current availability status as older revisions may be discontinued. Ensure external reference connections match the required voltage range of 1.0 V to 3.6 V if not using the internal reference.

Analog To Digital Converters (ADC) Selection Notes

Select this model over the CS5507-ASZR if four-channel input capability is required, as the CS5507 is a single-channel variant. Choose the CS5506-ASZR if 20-bit resolution is necessary instead of 16-bit. Ensure the application requires pseudo-differential inputs rather than fully differential inputs provided by other family members.

Analog To Digital Converters (ADC) Part Context

The CS5505 belongs to the CS5505/6/7/8 family of very low-power CMOS A/D converters. This family shares common architectural features including delta-sigma modulation and digital filtering but varies in resolution (16-bit vs 20-bit) and channel count (single vs four). The CS5505 specifically addresses the need for multi-channel, low-power data acquisition in industrial environments.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed direct substitute part numbers are not available in the provided documentation. Consider evaluating the CS5507-ASZR for single-channel applications or the CS5506-ASZR for higher resolution requirements within the same package and functional family.