CS44L11-CZZR

Audio Amplifiers Overview

The CS44L11-CZZR is a stereo digital-to-PWM Class-D audio amplifier system controller manufactured by Cirrus Logic. It integrates interpolation, volume control, and a headphone amplifier within a 16-pin TSSOP package. The device utilizes a direct-to-digital architecture to maintain signal integrity and minimize analog interference. Key electrical specifications include an analog and digital supply voltage range of 1.8 V to 2.4 V, support for sample rates up to 96 kHz, and a dynamic range of up to 95 dB. The PWM amplifier achieves greater than 90% efficiency.

Audio Amplifiers Feature Summary

• Direct-to-digital architecture preserving signal integrity
• Integrated digital tone control with selectable filters
• Programmable digital volume control with peak limiting
• High-efficiency PWM output reducing heat generation

Audio Amplifiers Applications

• Portable audio devices
• Headphone amplifiers
• Mobile phones

Audio Amplifiers Procurement Notes

Verify the specific suffix 'CZZR' against official documentation to confirm reel packaging and RoHS compliance status. Confirm current lifecycle status as availability may vary. Ensure design-in compatibility with existing power supply rails and digital interfaces before procurement.

Audio Amplifiers Selection Notes

Select this component for applications requiring high efficiency and low power consumption in portable systems. The integrated digital controls reduce external component count. Verify that the required supply voltage falls within the 1.8 V to 2.4 V range and that the target sample rate does not exceed 96 kHz.

Audio Amplifiers Part Context

This part belongs to the CS44L11 series of low-voltage Class-D headphone amplifiers. It is designed to replace traditional linear amplifiers in battery-powered devices where size and thermal management are critical constraints. The integration of DSP functions simplifies the overall audio subsystem design.

Audio Amplifiers Replacement Considerations

Consult official substitution guides for verified alternatives. Generic replacements may lack the specific digital control features or efficiency characteristics.