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EMA1901

Elite Semiconductor
Part Number EMA1901
Manufacturer Elite Semiconductor
Description 1.25W Mono Audio Power Amplifier
Published Jul 21, 2014
Detailed Description ESMT/EMP 1.25W Mono Audio Power Amplifier General Description The EMA1901 is an audio power amplifier primarily designed...
Datasheet PDF File EMA1901 PDF File

EMA1901
EMA1901

Overview
ESMT/EMP 1.
25W Mono Audio Power Amplifier General Description The EMA1901 is an audio power amplifier primarily designed for portable communication applications such as mobile phones and portable multimedia players (PMP).
To an 8Ω BTL load, it can deliver 1.
25 watt of continuous average power with less than 1% distortion (THD+N) from a 5VDC supply.
Typical THD+N is about 0.
015% at 1Watt.
The EMA1901 is pin-compatible to National Semi’s LM4890 Micro-SMD package with a superior (THD+N).
It does not require output coupling capacitors or bootstrap capacitors, and is ideal for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.
The EMA1901 features a low-power consumption shutdown mode, and an internal thermal shutdown protection mechanism.
Advanced pop & click circuitry is built in to eliminate noises that would otherwise occur during turn-on and turn-off transitions.
The EMA1901 is unity-gain stable and can be configured by external gain-setting resistors.
EMP products are RoHS and Halogen free compliant.
„ „ „ „ PSRR at 217Hz, VDD = 5V (Fig.
1) Power Output at 5.
0V & 1% THD Power Output at 2.
6V & 1% THD Shutdown Current EMA1901 60dB(typ.
) 1.
25W(typ.
) 300mW(typ.
) < 1µA(typ.
) Features „ „ „ „ „ „ „ „ „ Available in space-saving WL-CSP package Ultra low current shutdown mode BTL output driving capacitive loads Improved pop & click circuitry eliminating noises during turn-on and turn-off transitions 2.
5 - 5.
5V operation No output coupling capacitors, snubber networks or bootstrap capacitors required Thermal shutdown protection Unity-gain stable External gain configuration capability Applications „ „ „ Mobile Phones PDAs and PMPs Portable Electronic Device Key Specifications Connection Diagram WL-CSP Package Elite Semiconductor Memory Technology Inc.
/Elite MicroPower Inc.
Publication Date : Aug.
2009 Revision : 5.
1 1/14 ESMT/EMP Remark: (Unit: μm) Order information EMA1901 EMA1901-50WL09GRR/NRR 50 5.
0V Operat...


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