器件名称: EUA4890A
功能描述: 1 Watt Audio Power Amplifier
文件大小: 317.47KB 共13页
简 介:EUA4890A 1 Watt Audio Power Amplifier
DESCRIPTION
The EUA4890A is an audio power amplifier designed for portable communication device applications such as mobile phone applications. The EUA4890A is capable of delivering 1.0W of continuous average power to an 8 BTL and with less than 1% distortion (THD+N) from a 5.0V power supply, and 350mW to a 8 BTL load from a 3V power supply. The EUA4890A provides high quality audio while requiring few external components and minimal power consumption. It features a low-power shutdown mode, which is achieved by driving the SHUTDOWN pin with logic low. The EUA4890A contains circuitry to prevent from ”pop and click” noise that would otherwise occur during turn-on and turn-off transitions. For maximum flexibility, the EUA4890A provides an externally controlled gain (with resistors), as well as an externally controlled turn-on and turn-off times (with the bypass capacitor). The EUA4890A is available in a 1.5mm 1.5mm WCSP package.
FEATURES
z z z z z z z z z z 2.5-5.5V operation 65dB PSRR at 217Hz, VDD=5V 0.1A ultra low current shutdown mode Improved pop & click circuitry No output coupling capacitors, snubber networks or bootstrap capacitors required Thermal shutdown protection Unity-gain stable External gain configuration capability BTL output can drive capacitive loads
RoHS compliant and 100% lead(Pb)-free
APPLICATIONS
z z z Mobile Phones PDAs Portable electronic devices
Block Diagram
Figure1.
DS4890A Ver 1.2 Sep. 2007
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EUA4890A
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