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Numéro de référence | EMA2011-50MA08GRR | ||
Description | 2.7W Mono Filter-less Class-D Audio Amplifier | ||
Fabricant | Elite Semiconductor | ||
Logo | |||
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
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Pages | Pages 18 | ||
Télécharger | [ EMA2011-50MA08GRR ] |
No | Description détaillée | Fabricant |
EMA2011-50MA08GRR | 2.7W Mono Filter-less Class-D Audio Amplifier | Elite Semiconductor |
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