EMA1901 Datasheet | Elite Semiconductor Microelectronics Technology

ESMT/EMP 1.25W Mono Audio Power Amplifier General Description The EMA1901 is an audio power amplifier primarily designed for portable munication 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-patible 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 Ro HS and Halogen free pliant. - - - - PSRR at 217Hz, VDD = 5V (Fig. 1) Power Output at 5.0V & 1% THD Power Output at 2.6V & 1% THD Shutdown Current 60d B(typ.) 1.25W(typ.) 300m W(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 Micro Power Inc. Publication Date : Aug. 2009 Revision : 5.1 1/14 ESMT/EMP Remark: (Unit: μm) Order information EMA1901-50WL09GRR/NRR 50 5.0V...