CS4385-DQZR

ADCs/DACs - Special Purpose Overview

The CS4385-DQZR is an automotive-grade, 8-channel digital-to-analog converter (DAC) from Cirrus Logic. It features a 24-bit resolution and supports sample rates up to 192 kHz for PCM and Direct Stream Digital (DSD) formats. The device utilizes an advanced multi-bit delta-sigma architecture with mismatch-shaping technology to eliminate capacitor mismatch distortion. Key specifications include a 114 dB dynamic range and -100 dB THD+N. It operates on a +5 V analog supply, a +2.5 V digital supply, and separate 1.8 V to 5 V logic supplies for control and serial ports. The component is housed in a 48-pin LQFP package.

ADCs/DACs - Special Purpose Feature Summary

• Advanced Multi-bit Delta Sigma Architecture with mismatch-shaping technology
• Supports PCM data from 4 kHz to 216 kHz and DSD audio input
• Proprietary DSD processor enabling non-decimating volume control and 50 kHz on-chip filtering
• Selectable fast and slow digital interpolation filters with half-dB step size volume control

ADCs/DACs - Special Purpose Applications

• Automotive audio systems
• SACD players
• A/V receivers
• Digital TV’s
• Mixing consoles and effects processors

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'DQZR' against current manufacturer documentation to confirm availability status and exact temperature grade (-40°C to +105°C). Confirm that the required power supplies (+5V analog, +2.5V digital, and 1.8-5V logic) match the system design constraints before procurement.

ADCs/DACs - Special Purpose Selection Notes

Select this component for applications requiring high channel count (8 channels) and low clock-jitter sensitivity. Ensure the design accommodates the specific supply voltage requirements: VA at 5V, VD at 2.5V, and separate logic supplies for VLC and VLS. Verify compatibility with TDM or industry-standard serial interfaces if using PCM mode.

ADCs/DACs - Special Purpose Part Context

The CS4385-DQZR belongs to the CS4385 family of 8-channel DACs. The '-DQZ' suffix indicates the Automotive grade variant with an extended operating temperature range of -40°C to +105°C, distinguishing it from the Commercial grade (-CQZ) which operates up to +85°C. The 'R' typically denotes reel packaging.

ADCs/DACs - Special Purpose Replacement Considerations

The CS4385A-DQZ is a related variant within the same family. Verify pinout and register compatibility if substituting, as the A-series may have minor specification differences or updated manufacturing processes.