CS35L03-CWZR

Audio Amplifiers Overview

The CS35L03-CWZR is a mono Class-D audio amplifier with a filterless hybrid architecture. It delivers up to 3.0 W output power into a 4 Ω load at 10% THD+N and 1.7 W into an 8 Ω load. The device features advanced closed-loop modulation achieving 0.02% THD+N at 1 W and a 98 dB signal-to-noise ratio. It operates on a supply voltage range of 2.5 V to 5.5 V, with a maximum ambient operating temperature of +70°C. The component utilizes a 9-ball WLCSP package.

Audio Amplifiers Feature Summary

• Advanced delta-sigma closed-loop modulation for high-fidelity audio performance
• Hybrid Class-D architecture enabling reduced idle power consumption
• Integrated thermal overload and output short-circuit protection with automatic recovery
• Pop and click suppression mechanisms for silent startup

Audio Amplifiers Applications

• Mobile phones
• Laptops and netbooks
• Tablets
• Portable navigation devices
• Active speakers

Audio Amplifiers Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm pin compatibility and gain configuration. Confirm that the required operational mode aligns with the LFILT+ and MODE pin connections specified in the datasheet. Ensure PCB footprint matches the 9-ball WLCSP dimensions provided in the package drawings.

Audio Amplifiers Selection Notes

Select this component when low idle current and high efficiency are critical for battery-powered applications. The CS35L03 offers a higher default gain (+12 dB) compared to the CS35L01 (+6 dB), suitable for lower input signal levels. Consider the four available operating modes (SD, FSD, HD, FHD) to balance audio quality, EMI performance, and power consumption requirements.

Audio Amplifiers Part Context

The CS35L03 belongs to the Cirrus Logic CS35L0x family of high-efficiency Hybrid Class-D amplifiers. It shares a pin-compatible 9-ball WLCSP form factor with the CS35L01, facilitating easy upgrades within the same package constraint. The device integrates gate drivers, an internal oscillator, and a low-dropout regulator for its hybrid operation modes.

Audio Amplifiers Replacement Considerations

The CS35L01-CWZR is a pin-compatible alternative within the same family, differing primarily in default gain settings.