AD51652

ESMT Preliminary AD51652 3W Mono Filter-less Class-D Audio Amplifier Features Supply voltage range: 2.5 V to 5.5 V Support single-ended or differential analog input Low Quiescent Current Low Output Noise Low shut-down current Short power-on transient time Internal pull-low resistor on shut-down pins Short-circuit protection Over-temperature protection Loudspeaker power within 10% THD+N 1.78W/ch into 8Ω loudspeaker >3W/ch into 4Ω loudspeaker Loudspeaker efficiency 93% @ 8Ω, THD+N=10% 85% @ 4Ω, THD+N=10% MSOP-8L, TDFN-8L and 0.4mm ball pitch WLCSP-9L packages Integrated Feedback Resistor of 300kΩ Applications Monitor audio PDA Portable multimedia devices Notebook computer Mobile phone Description The AD51652 is a 3.0W mono, filter-less class-D audio amplifier. Operating with 5.0V loudspeaker driver supply, it can deliver 3.0W output power into 4 Ω loudspeaker within 10% THD+N or 2.6W at 1% THD+N. The AD51652 is a mono audio amplifier with high efficiency and suitable for the notebook computer, and portable multimedia device. Functional Block Diagram Gain=300k /Rin ~150k VDD + Cin Rin INP + Rin INN PWM Generator Loudspeaker Driver VOP Differential input Cin - - + VON ~150k SD ~300k -wave Generator Overload, Voltage & Thermal Protection GND Elite Semiconductor Memory Technology Inc. Publication Date: Mar. 2014 Revision: 0.03 1/18 ESMT Typical Application Circuit Preliminary AD51652 VDD Cin Rin CS2 0.1uF CS1 2.2uF INP 1uF 150kΩ AD51652 Filterless Class...