AS3561-DWLT

Overview

The AS3561-DWLT is a Class-H stereo headphone amplifier designed for portable devices. It features an integrated DC-DC buck converter and charge pump, enabling direct Li-Ion battery operation from 2.3V to 5.5V without output coupling capacitors. The device delivers 30mW per channel into 16Ω loads with 0.02% THD+N. Key electrical parameters include a 1mA quiescent current, 100dB SNR at 0.9Vrms, and ultra-low DC offset. It operates within a temperature range of -30°C to +85°C.

Feature Summary

• Class-H architecture with integrated DC-DC buck converter for optimized power consumption
• Integrated charge pump generates symmetric negative supply for true ground output
• I²C control interface providing 32-step volume control and independent mute functions
• Differential inputs with output ground sensing for high noise immunity

Applications

• Mobile Phones
• Portable Navigation Devices
• Media Devices

Procurement Notes

Verify the specific ordering suffix (DWLT) against the manufacturer's official documentation to confirm package type and reel specifications. Ensure compatibility with I²C logic levels and check for any recent product change notifications or end-of-life announcements prior to finalizing procurement plans.

Selection Notes

Select this component for applications requiring low power consumption in space-constrained portable designs. The integrated DC-DC converter eliminates external boost requirements, while the WLCSP package minimizes PCB area. Verify that the system supports I²C communication for volume and mute control configuration.

Part Context

The AS3561 is a Class-H stereo headphone amplifier manufactured by ams OSRAM USA INC. It is specifically engineered for portable electronics where battery life and board space are critical constraints. The device integrates power management and audio amplification to reduce external component count.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.