AS3561-DWLM

$2.51

Description：IC AMP CLASS H STER 30MW 16WLCSP
Series：-
Mfr：ams-OSRAM USA INC.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:e002f00b2c1e Category: Audio Amplifiers Brand: ams-OSRAM USA INC.

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Product introduction

Product Detailed Parameters

Description：IC AMP CLASS H STER 30MW 16WLCSP
Series：-
Mfr：ams-OSRAM USA INC.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Class H
Output Type：Headphones, 2-Channel (Stereo)
Max Output Power x Channels @ Load：30mW x 2 @ 16Ohm
Voltage - Supply：2.3V ~ 5.5V
Features：Differential Inputs, I2C, Short-Circuit and Thermal Protection, Shutdown, Volume Control
Mounting Type：Surface Mount
Supplier Device Package：16-WLCSP (1.62x1.62)
Package / Case：16-UFBGA, WLCSP
Operating Temperature：-
Grade：-
Qualification：-

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AS3561-DWLM

Overview

The AS3561-DWLM 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 2x30mW into 16Ω with 0.02% THD and 100dB SNR at 0.9Vrms. Quiescent current is 1mA with both channels enabled. It includes I²C control for 32-step volume adjustment and mute functions.

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 interface provides digital control including 32-step volume and independent channel mute
Fully differential inputs with ground sensing ensure high noise immunity

Applications

Mobile Phones
Portable Navigation Devices
Media Devices

Procurement Notes

Verify the specific suffix DWLM against the manufacturer's official ordering guide to confirm package dimensions and pinout compatibility. Ensure the component meets the required operating temperature range of -30°C to +85°C for the target application environment. Confirm that the 1.615 x 1.615mm WL-CSP footprint matches the PCB design specifications.

Selection Notes

Select this amplifier for applications requiring low power consumption in portable electronics. The integrated DC-DC converter allows direct connection to single-cell lithium-ion batteries. The differential input structure is suitable for noisy environments. Verify that the system supports I²C communication for volume and mute control implementation.

Part Context

The AS3561 is a Class-H stereo headphone amplifier by AMS (ams-OSRAM). It replaces traditional Class-AB amplifiers by adapting the supply rail continuously based on the input signal swing. This architecture significantly reduces power dissipation while maintaining high audio quality in space-constrained portable devices.