CS44800-CQZ

Audio Special Purpose Overview

The CS44800-CQZ is an obsolete 8-channel digital amplifier controller manufactured by Cirrus Logic Inc. It integrates interpolation, sample rate conversion (SRC), half- and full-bridge PWM driver outputs, and power supply rejection feedback within a 64-pin LQFP package. The device supports sample rates from 32 kHz to 192 kHz. Control interfaces include SPI and I²C.

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 minimizes analog interference effects on system performance.
• Spread Spectrum Modulation reduces electromagnetic interference (EMI).
• Digital Volume Control with Soft Ramp provides +24 to -127 dB adjustment in 0.25 dB steps.

Audio Special Purpose Applications

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

Audio Special Purpose Procurement Notes

This component is officially Obsolete and no longer manufactured by Cirrus Logic. Availability is limited to surplus stock from third-party distributors such as Rochester Electronics or other secondary market suppliers. Verify the specific ordering suffix '-CQZ' against the manufacturer's current datasheet to confirm package type and historical availability status.

Audio Special Purpose Replacement Considerations

As this part is obsolete, consult official Cirrus Logic documentation for verified replacement part numbers or updated revisions of the CS44800 series. Do not assume functional equivalence with other models without verifying pinout and register compatibility. Potential substitutes may include newer generations of Cirrus Logic Class D controllers or alternative manufacturers' 8-channel controllers, subject to rigorous validation.

Audio Special Purpose FAQ

What is the function of the Power Supply Rejection feature?

It utilizes real-time feedback to minimize analog interference effects that negatively affect system performance.

What are the supported serial control interfaces?

The device supports both SPI and I²C host control interfaces for configuration and status monitoring.