AP4890B Datasheet | APLUS

INTEGRATED CIRCUITS INC.--- AP4890B AP4890B --- 1W AUDIO POWER AMPLIFIER 1. DESCRIPTION : The AP4890B is an audio power amplifier designed for portable munication 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 350m W to a 8Ω BTL load from a 3V power supply. The AP4890B provides high quality audio while requiring few extemal ponents 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 - 65d B 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 - Ro HS pliant and 100% lead(Pb)-free - APPLICATIONS - Mobile Phones - PDAs - Portable electronic devices http://.aplusinc..tw Page 1 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B 3. PIN CONFIGURATION (Top View) : ] 4. PIN DESCRIPTION : PIN PIN I/O DESCRIPTION SHUT DOWN-B...