CS4349-DZZR

ADCs/DACs - Special Purpose Overview

The CS4349-DZZR is a stereo digital-to-analog converter (DAC) from Cirrus Logic, designed for automotive applications with an operating temperature range of -40°C to +105°C. It features a 24-bit multibit delta-sigma architecture supporting audio sample rates up to 192 kHz. The device integrates digital interpolation, volume control, and analog filtering within a 24-pin TSSOP package. Key electrical specifications include a typical dynamic range of 101 dB and THD+N performance of -91 dB at 5.0 V or -84 dB at 3.3 V. It operates on a single +3.3 V or +5.0 V analog supply.

ADCs/DACs - Special Purpose Feature Summary

• Advanced multibit delta-sigma architecture providing ideal linearity and tolerance to clock jitter
• Integrated digital volume control with soft ramp and zero-crossing mute capabilities
• Supports standard serial audio formats including I2S, Left-Justified, Right-Justified, and TDM
• Popguard technology minimizes power-up and power-down transients

ADCs/DACs - Special Purpose Applications

• Automotive audio systems
• DVD players and recorders
• Set-top boxes
• Digital TVs
• Mini-component systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix DZZR to confirm the Automotive grade (-40°C to +105°C) designation. Ensure the design accommodates the required analog supply voltage of either +3.3 V or +5.0 V. Confirm that the 24-pin TSSOP package dimensions align with the PCB layout requirements. Check for any relevant Product Change Notifications (PCN) regarding manufacturing updates.

ADCs/DACs - Special Purpose Selection Notes

Select the CS4349-DZZR when automotive environmental ratings are required alongside high-fidelity audio performance. Compare against the Commercial grade CS4349-CZZR if extended temperature operation is not necessary. Consider the integrated volume control and low-latency filtering if external digital signal processing resources are limited.

ADCs/DACs - Special Purpose Part Context

The CS4349 belongs to Cirrus Logic's MasterHIFI series of audio DACs. The DZZR suffix specifically denotes the Automotive qualification and the Tape & Reel packaging format. This component serves as a complete stereo DAC solution, eliminating the need for external digital filters in many two-channel audio system designs.

ADCs/DACs - Special Purpose Replacement Considerations

The CS4349-CZZR is the Commercial grade equivalent with identical functionality but a restricted operating temperature range of -40°C to +85°C. Verify that the thermal environment of the application falls within the Commercial grade limits before substituting.