CS44600-CQZR

Audio Special Purpose Overview

The CS44600-CQZR is a 6-channel digital-to-PWM Class D audio system controller from Cirrus Logic. It utilizes a direct-to-digital architecture to maintain signal integrity to the final output filter, minimizing analog interference. The device integrates interpolation, sample rate conversion (SRC), half- and full-bridge PWM driver outputs, and power supply rejection feedback in a 64-pin LQFP package. Key performance metrics include a system-level dynamic range exceeding 100 dB and THD+N of less than 0.03% at 1 W. It supports sample rates from 32 kHz to 192 kHz.

Audio Special Purpose Feature Summary

• Integrated Sample Rate Converter (SRC) eliminates clock jitter effects and allows input sample rate independent operation.
• Power Supply Rejection Realtime Feedback reduces noise sensitivity.
• Spread Spectrum Modulation minimizes electromagnetic interference (EMI).
• Digital Volume Control with Soft Ramp provides adjustment from +24 dB to -127 dB in 0.25 dB steps.

Audio Special Purpose Applications

• A/V receivers
• DVD receivers
• Digital speaker systems
• Automotive audio systems

Audio Special Purpose Procurement Notes

This component is marked as 'Not For New Designs' by the manufacturer. Designers should verify availability through authorized distributors or secondary market suppliers and consider replacement options for new production.

Audio Special Purpose Selection Notes

Select this component for designs requiring high channel count integration without external DSPs. Verify compatibility with available Class D power stages, as the CS44600 acts as a controller rather than a standalone amplifier. Check interface support for SPI or I2C host control ports and ensure the 64-LQFP package fits the PCB layout constraints.