CS4348-CZZ

ADCs/DACs - Special Purpose Overview

The CS4348-CZZ is a stereo digital-to-analog converter (DAC) from the Cirrus Logic CS4344 family, housed in a 10-pin TSSOP package. It features a fourth-order multibit delta-sigma modulator with interpolation filtering and on-chip analog low-pass filtering. The device supports serial audio data formats including Right Justified 16-bit, automatically detecting sample rates up to 192 kHz via MCLK/LRCK ratio analysis. Operating on a single +3.3 V or +5 V supply, it delivers a dynamic range of 105 dB (A-weighted) and -90 dB THD+N at full scale. Key features include Popguard technology for transient control, on-chip digital de-emphasis, and filtered line-level outputs.

ADCs/DACs - Special Purpose Feature Summary

• Multibit Delta-Sigma Architecture: Utilizes a fourth-order multibit delta-sigma modulator with mismatch shaping technology to minimize distortion.
• Auto-Speed Detection: Automatically detects sampling rates between 2 kHz and 200 kHz using MCLK/LRCK ratios without manual configuration.
• Popguard Technology: Minimizes output transients during power-up and power-down sequences by ramping the quiescent voltage.
• Integrated Filtering: Includes on-chip digital de-emphasis and switched-capacitor DAC with continuous-time low-pass filtering.

ADCs/DACs - Special Purpose Applications

• DVD players and recorders
• Digital televisions
• Home theater systems
• Set-top boxes
• Automotive audio systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix '-CZZ' corresponds to the commercial temperature grade (-10°C to +70°C). Confirm the pinout matches the 10-pin TSSOP package dimensions provided in the datasheet. Ensure the system design accommodates the required decoupling capacitors near the VA and VQ pins for optimal performance.

ADCs/DACs - Special Purpose Selection Notes

Select the CS4348-CZZ when a Right Justified 16-bit serial interface is required. For I2S or Left Justified formats, consider the CS4344 or CS4345 respectively within the same family. Verify that the application requires the commercial temperature range; for automotive or wider industrial ranges, the -DZZ variant is available.

ADCs/DACs - Special Purpose Part Context

The CS4348 is part of the CS4344 family, which shares identical core architecture and specifications but differs only in supported serial data interfaces. This family is designed for high-performance audio applications requiring minimal external support circuitry while maintaining high dynamic range and low distortion characteristics.

ADCs/DACs - Special Purpose Replacement Considerations

Direct functional replacements within the same package and interface are limited as other family members (CS4344, CS4345) use different data formats. No alternative part numbers are explicitly listed as direct substitutes in the provided documentation.