EUA4990 Datasheet, PDF (1/12 Pages) Eutech Microelectronics Inc – 1.36 Watt Audio Power Amplifier

EUA4990
1.36 Watt Audio Power Amplifier
DESCRIPTION
The EUA4990 is an audio power amplifier designed for
portable communication device applications such as
mobile phone applications. The EUA4990 is capable of
delivering 1.36W of continuous average power to an 8Ω
BTL and with less than 1% distortion (THD+N) from a
5.0V power supply, and 460mW to a 8Ω BTL load from a
3V power supply.
The EUA4990 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 EUA4990 contains circuitry to prevent from ”pop and
click” noise that would otherwise occur during turn-on and
turn-off transitions.
For maximum flexibility, the EUA4990 provides an
externally controlled gain (with resistors), as well as an
externally controlled turn-on and turn-off times (with the
bypass capacitor).
The EUA4990 is available in a 1.5mm 1.5mm WCSP
package.
FEATURES
z 2.5V-5.5V operation
z 60dB PSRR at 1kHz, V_DD=5V
z 0.1µA ultra low current shutdown mode
z Improved pop & click circuitry
z No output coupling capacitors, snubber networks or
bootstrap capacitors required
z Thermal shutdown protection
z Unity-gain stable
z External gain configuration capability
z BTL output can drive capacitive loads
z RoHS compliant and 100% lead(Pb)-free
APPLICATIONS
z Mobile Phones
z PDAs
z Portable electronic devices
Block Diagram
DS4990 Ver 1.0 Mar. 2009
Figure1. Block Diagram
1