CS5503-BSR

Encoders, Decoders, Converters Overview

The CS5503-BSR is a monolithic CMOS analog-to-digital converter (ADC) from Cirrus Logic, designed for high-precision measurement of low-frequency signals in physical, chemical, and biological applications. It delivers 20-bit resolution with no missing codes and utilizes charge-balance techniques to achieve performance up to 4 kSps. The device integrates a 6-pole low-pass Gaussian filter and on-chip self-calibration circuitry, ensuring linearity errors of ±0.0003%. It features flexible serial communications compatible with microcontrollers, pin-selectable unipolar/bipolar ranges, and ultra-low power consumption down to 10 µW in sleep mode.

Encoders, Decoders, Converters Feature Summary

• Integrates a 6-pole low-pass Gaussian filter for non-aliasing signal conversion
• Includes on-chip self-calibration circuitry to maintain high accuracy
• Supports flexible serial communication formats compatible with standard microcontrollers
• Offers pin-selectable input range configurations for unipolar or bipolar operation

Encoders, Decoders, Converters Applications

• Measurement of low-frequency physical process signals
• Chemical analysis instrumentation requiring high-resolution data acquisition
• Biological signal monitoring systems
• Portable battery-powered measurement devices due to low power modes

Encoders, Decoders, Converters Procurement Notes

Verify the specific suffix BSR against official datasheets to confirm packaging type and tape-and-reel specifications. Confirm current lifecycle status as distribution channels may list obsolete components. Ensure compatibility with existing serial interface protocols before integration into new designs.

Encoders, Decoders, Converters Selection Notes

Select this component when 20-bit resolution and low noise are critical for slow-varying signals. Compare sampling rates against application requirements, as the maximum rate is 4 kSps. Evaluate power constraints, noting the significant difference between active and sleep mode consumption for portable designs.

Encoders, Decoders, Converters Part Context

The CS5503 belongs to the CS5501/CS5503 family of precision ADCs. While the CS5501 offers 16-bit resolution, the CS5503 provides enhanced 20-bit performance. Both share similar architectures but differ in resolution and specific calibration characteristics within the Cirrus Logic measurement converter portfolio.

Encoders, Decoders, Converters Replacement Considerations

Publicly confirmed direct substitute part numbers are not available in the provided documentation. Designers should consult Cirrus Logic technical support for validated replacements or evaluate newer generation precision ADCs from the manufacturer if availability is constrained.