CS4385A-DQZR

ADCs/DACs - Special Purpose Overview

The CS4385A-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) audio formats. The device utilizes an advanced multi-bit delta-sigma architecture with mismatch-shaping technology to eliminate capacitor mismatch distortion. Key specifications include a dynamic range of 114 dB and -100 dB THD+N. It operates with a +5 V analog supply, +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
• 114 dB Dynamic Range and -100 dB THD+N performance
• Integrated DSD processor with non-decimating volume control and 50 kHz on-chip filtering
• Compatible with industry-standard TDM serial interface in hardware and software modes

ADCs/DACs - Special Purpose Applications

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

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'DQZR' against the manufacturer's ordering information to confirm the Automotive grade (-40°C to +105°C) and tape-and-reel packaging configuration. Ensure compatibility with the required power supply voltages (+5 V analog, +2.5 V digital) and logic levels (1.8 V to 5 V) during procurement planning.

ADCs/DACs - Special Purpose Selection Notes

Select the CS4385A-DQZR for applications requiring high channel count and automotive temperature resilience. Compare the Commercial grade (-CQZ) if the operating environment does not exceed +85°C. Verify that the system design accommodates the separate analog, digital, and logic power domains specified in the recommended operating conditions.

ADCs/DACs - Special Purpose Part Context

The CS4385A is part of Cirrus Logic's high-performance audio DAC family. The '-DQZ' suffix denotes the Automotive grade variant with an extended temperature range up to +105°C. The '-R' suffix typically indicates reel packaging, though verification with the official datasheet ordering section is required to confirm specific shipping configurations.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer's current product portfolio for alternative components if discontinuation or obsolescence occurs.