CS4391A-KS

ADCs/DACs - Special Purpose Overview

The CS4391A-KS is a stereo digital-to-analog converter (DAC) manufactured by Cirrus Logic, housed in a 20-pin SOIC package. It supports 24-bit resolution and sampling rates up to 192 kHz with serial input format using two's complement binary data. The device operates on a +5 V power supply within an operating temperature range of -10 °C to 70 °C. Key electrical specifications include a maximum analog output voltage of 1.15 V and a minimum of 1.05 V. The component integrates interpolation, delta-sigma conversion, digital de-emphasis, volume control, and analog filtering into a single system.

ADCs/DACs - Special Purpose Feature Summary

• Complete stereo DAC system featuring fourth-order delta-sigma D/A conversion and analog output filtering
• 108 dB dynamic range and 94 dB THD+N performance
• On-chip digital de-emphasis for 32, 44.1, and 48 kHz sample rates
• Volume control with soft ramp capability providing -119 dB attenuation and zero-crossing click-free transitions

ADCs/DACs - Special Purpose Applications

• DVD players
• AV receivers
• CD players
• Set-top box systems

ADCs/DACs - Special Purpose Procurement Notes

Verify RoHS compliance status as the provided specification table indicates non-compliance. Confirm the specific suffix 'KS' corresponds to the standard SOIC-20 package variant listed in official Cirrus Logic documentation. Ensure the sourcing channel provides original manufacturer documentation to validate the part number against the discontinued or legacy status often associated with this series.

ADCs/DACs - Special Purpose Selection Notes

Select the CS4391A-KS for applications requiring a complete stereo DAC solution with integrated volume control and low clock jitter sensitivity. It is suitable for designs needing direct interface with 5 V to 1.8 V logic levels. Consider the -10 °C to 70 °C operating temperature range when defining environmental constraints. Verify that the required dynamic range of 108 dB meets the audio quality specifications of the target system.

ADCs/DACs - Special Purpose Part Context

The CS4391A belongs to the CS4391 family of high-performance audio DACs from Cirrus Logic. This family is designed for consumer audio electronics, offering a compact alternative to discrete DAC solutions. The 'A' revision typically denotes updated silicon or minor parameter refinements over earlier versions, while the 'KS' suffix identifies the specific package and temperature grade configuration.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Engineering teams should consult Cirrus Logic application notes for pin-compatible alternatives or evaluate the CS4392 series for similar functionality with potential feature enhancements.