INTEGRATED CIRCUITS INC.--- AP4890B
AP4890B --- 1W AUDIO POWER AMPLIFIER
1. DESCRIPTION :
The AP4890B is an audio power ...
INTEGRATED CIRCUITS INC.--- AP4890B
AP4890B --- 1W AUDIO POWER AMPLIFIER
1. DESCRIPTION :
The AP4890B is an audio power amplifier designed for portable communication device applications such as mobile phone applications. The AP4890B is capable of delivering 1W of continuous average power to an 8Ω BTL and with less than 1% distortion (THD+N) from a 5.0V power supply, and 350mW to a 8Ω BTL load from a 3V power supply.
The AP4890B provides high quality audio while requiring few extemal components and minimal power consumption. It features a low-power shutdown mode, which is achieved by driving the SHUTDOWN pin with logic low.
The AP4890B contains circuitry to prevent from “pop and click” noise that would otherwise occur during turn-on and turn-off transitions.For maximum flexibility, the AP4890B provides an externally controlled gain (with resistors), as well as an externally controlled turn-on and turn-off times (with the bypass capacitor).
2. FEATURE :
2.5-5.2V operation 65dB PSRR at 217Hz, VDD=5V 0.1µA ultra low current shutdown mode Improved pop & click circuitry No output coupling
capacitors, snubber networks or bootstrap
capacitors required Thermal shutdown protection External gain configuration capability RoHS compliant and 100% lead(Pb)-free
APPLICATIONS Mobile Phones PDAs Portable electronic devices
http://www.aplusinc.com.tw
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Tel : 886-2-2782-9266 Ver1.2
INTEGRATED CIRCUITS INC.--- AP4890B
3. PIN CONFIGURATION (Top View) :
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