CS3511-CNZ

Audio Amplifiers Overview

The CS3511-CNZ is a stereo high-efficiency Class-D audio power amplifier manufactured by Cirrus Logic. It delivers up to 10 W of continuous output power per channel into an 8 Ω load at THD+N = 1%. The device operates on a single supply voltage typically ranging from 9 V to 12 V, with an absolute maximum rating of 13.2 V. Key electrical specifications include a system-level dynamic range of 99 dB and a channel separation of -104 dB. It features four selectable gain settings controlled via GAIN0 and GAIN1 pins, supporting both differential and single-ended inputs.

Audio Amplifiers Feature Summary

• Closed-loop Advanced Delta-Sigma architecture for premium quality audio amplification
• True Spread Spectrum Modulation to minimize electromagnetic interference
• Integrated protection circuits including over-current, under-voltage, and thermal overload detection with automatic recovery
• Low-power standby mode accessible via the SLEEP pin

Audio Amplifiers Applications

• Active speakers
• Portable media player docking stations
• Mini/Micro shelf systems
• Digital televisions

Audio Amplifiers Procurement Notes

Verify that the component matches the specific commercial grade temperature range (-10°C to +70°C) required for your application environment. Confirm the package type is the thermally enhanced 32-pin QFN (6 x 6 mm). Ensure the ordering suffix corresponds to the tray packaging format if applicable, as this affects handling procedures during assembly.

Audio Amplifiers Selection Notes

Select the CS3511 when high efficiency and low distortion are critical for stereo audio applications requiring up to 10 W per channel. Consider the integrated 5 V regulator and charge pump capabilities which simplify external circuit design. Evaluate the available gain settings against your input signal levels to optimize headroom and noise performance without requiring additional pre-amplification stages.

Audio Amplifiers Part Context

This component belongs to the Cirrus Logic CS35xx series of Class-D audio amplifiers. It is designed for consumer electronics where space constraints and thermal management are significant factors. The integration of protection features and spread spectrum modulation distinguishes it from earlier generation amplifiers in the same product family.

Audio Amplifiers Replacement Considerations

Direct replacements within the same manufacturer's portfolio should be evaluated based on pin compatibility and thermal characteristics. Verify that any substitute part supports the same 32-pin QFN package dimensions and maintains equivalent power delivery capabilities for 8 Ω loads.

Audio Amplifiers FAQ

How does the CS3511 handle turn-on and turn-off pops?

The device employs a patented Dynamic DC Offset Calibration method. This circuit minimizes internal offsets before switching begins and ramps the DC output offset potential slowly to keep speaker movement in the subsonic range, thereby reducing audible transients.

What happens when a fault condition is detected?

If an over-current, under-voltage, or over-temperature fault occurs, the amplifier mutes, the outputs tri-state, and the STATUS pin goes high. The device automatically attempts to recover once the fault condition clears.