EUA4890 Datasheet | Eutech Microelectronics

DESCRIPTION The EUA4890 is an audio power amplifier designed for portable munication device applications such as mobile phone applications. The EUA4890 is capable of delivering 1.0W 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 EUA4890 provides high quality audio while requiring few external ponents and minimal power consumption. It features a low-power shutdown mode, which is achieved by driving the SHUTDOWN pin with logic low. The EUA4890 contains circuitry to prevent from ”pop and click” noise that would otherwise occur during turn-on and turn-off transitions. For maximum flexibility, the EUA4890 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on and turn-off times (with the bypass capacitor). The EUA4890 is available in a MSOP-8 , 3mm×3mm DFN package. FEATURES z z z z z z z z z z 2.5-5.5V 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 Unity-gain stable External gain configuration capability BTL output can drive capacitive loads Ro HS pliant and 100% lead(Pb)-free APPLICATIONS z z z Mobile Phones PDAs Portable electronic devices VÛm w`R - yÑb € Block Diagram ech. ww w.g ofot Figure1. DS4890 Ver 1.7 Dec. 2006 N ~- Nãt ÿ mñW3^ VÛmw`R- yÑb€g - PQl Sø Tel: 0755-8398 3377 / 135 9011 2223 http://.gofotech. Typical Application Circuit Figure2. Audio Amplifier with Single - Ended Input VÛ mw `R - yÑ b€ w w w . g o f o t e c h . c o m Figure3. Audio Amplifier with Differential Input DS4890 Ver 1.7 Dec. 2006 N~- NãtÿmñW3^VÛmw`R- yÑb€g- PQl Sø Tel: 0755-8398 3377 / 135 9011 2223 http://.gofotech. Pin Configurations Package Type Pin Configurations Package Type Pin Configurations Top...