EMA2011 Datasheet | Elite Semiconductor Microelectronics Technology

ESMT/EMP Features z Supply voltage range: 2.5 V to 5.5 V z Support single-ended or differential analog input z Low static operation current z Low shut-down current z Short power-on transient time z Internal pull-low resistor on shut-down pins z Short-circuit protection z Over-temperature protection z Loudspeaker power within 10% THD+N - 1.66W/ch into 8Ω loudspeaker - 2.70W/ch into 4Ω loudspeaker z Loudspeaker efficiency - 90% @ 8Ω, THD+N=10% - 85% @ 4Ω, THD+N=10% z MSOP-8, TDFN-9 and WLCSP-9 packages z Integrated de-pop circuitry z Internal generated 450k Hz switching frequency 2.7W Mono Filter-less Class-D Audio Amplifier Applications z z z z z Monitor audio PDA Portable multimedia devices Notebook puter Mobile phone Description The EMA2011 is a mono, filter-less class-D audio amplifier. Operating with 5.0V loudspeaker driver supply, it can deliver 2.7W output power into 4 Ω loudspeaker within 10% THD+N or 2.2W at 1% THD+N. The EMA2011 is a mono audio amplifier with high efficiency and suitable for the notebook puter, and portable multimedia device. Functional Block Diagram Gain=300k /Rin ~300k VDD Cs + Cin Rin + Rin PWM Generator Loudspeaker Driver Differential input Cin - INN + VON ~300k SD ~300k -wave Generator Overload, Voltage & Thermal Protection Elite Semiconductor Memory Technology Inc./Elite Micro Power Inc. Publication Date: Jul. 2010 Revision: 2.1 1/18 ESMT/EMP Typical Application...