PDF EMA2011-50FF08NRR Data sheet ( Hoja de datos )

Número de pieza	EMA2011-50FF08NRR
Descripción	2.7W Mono Filter-less Class-D Audio Amplifier
Fabricantes	Elite Semiconductor
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No Preview Available ! ESMT/EMP EMA2011 2.7W Mono Filter-less Class-D Audio Amplifier 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 450kHz switching frequency Applications z Monitor audio z PDA z Portable multimedia devices z Notebook computer z 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 computer, and portable multimedia device. Functional Block Diagram Gain=300k /Rin + Cin Differential input - Cin Rin INP Rin INN SD ~300k +- -+ PWM Generator ~300k -wave Generator ~300k Loudspeaker Driver Overload, Voltage & Thermal Protection VDD Cs VOP VON GND Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Jul. 2010 Revision: 2.1 1/18 1 page ESMT/EMP EMA2011 Pin Description NAME SD INP NC INN VOP VDD GND VON Thermal pad MSOP-8 1 2 3 4 5 6 7 8 N/A PIN TDFN-8 1 3 2 4 5 6 7 8 9 WLCSP-9 C2 A1 N/A C1 A3 B2 A2, B3 C3 N/A IO TYPE I I NC I O P G O G DESCRIPTION Shutdown EMA2011 (Low active logic) Positive differential input No internal connect Negative differential input Positive output Power supply Power ground Negative output Must be connected the package thermal pad to PCB thermal land. Available Package Package Type MSOP-8 TDFN-8 (3x3mm) WLCSP-9 Device no. EMA2011 θJA (oC/W) 190 45.8 128 Exposed Thermal Pad No Yes No Absolute Maximum Ratings SYMBOL VDD Tstg Ta PARAMETER Supply for analog cells & loudspeaker driver Input voltage Storage temperature Ambient operating temperature MIN MAX UNIT 2.5 6.0 V -0.3 5.5 -65 150 -40 85 V oC oC Recommended Operating Conditions SYMBOL VDD VIH VIL PARAMETER Supply for analog cells & loudspeaker driver High-Level Input Voltage Low-Level Input Voltage MIN 2.5 70% X VDD 0 MAX 5.5 VDD 35% X VDD UNIT V V V Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Jul. 2010 Revision: 2.1 5/18 5 Page ESMT/EMP EMA2011 z Efficiency 100.00 EMA2011 EFFCIENCY[%] TEST VDD=5,3.6,2.5V RL=8Ohm VDD=5V VDD=3.6V VDD=2.5 80.00 60.00 40.00 20.00 0.00 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 Outpower[W] 100.00 EMA2011 EFFCIENCY[%] TEST VDD=5,3.6,2.5V RL=4Ohm VDD=5V VDD=3.6V VDD=2.5V 80.00 60.00 40.00 20.00 0.00 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 Outpower[W] Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Jul. 2010 Revision: 2.1 11/18 11 Page

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