EUA2012A

DS2012A Ver 1.1 Sep. 2009

1

2.5-W/CH Stereo Filter-less Class-D

Audio Power Amplifier with Auto-Recovery

DESCRIPTION

The EUA2012A is a high efficiency, 2.5W/channel stereo

class-D audio power amplifier. A low noise, filterless

PWM architecture eliminates the output filter, requiring

only two external components for operation.

Operating from a single 5V supply, EUA2012A is capable

of delivering 2.5W/ channel of continuous output power to

a 4Ω load with 10% THD+N.

The EUA2012A features independent shutdown controls

for each channel. The gain can be selected to 6, 12, 18, or

24 dB utilizing the G0 and G1 gain select pins. High PSRR

and differential architecture provide increased immunity to

noise and RF rectification.

The EUA2012A is available in space-saving WCSP and

TQFN packages, is an idea choice for mobile phones and

other portable communication devices.

Typical Application Circuit

FEATURES

Low EMI Emission

Output Power By TQFN Package

- 2.5W/Ch Into 4Ω at 5V

- 1.6W/Ch Into 8Ω at 5V

- 800mW/Ch Into 8Ω at 3.6V

Wide Supply Voltage: 2.5V to 5.5V

Independent Shutdown Control for Each Channel

Selectable Gain of 6,12,18 and 24 dB

High PSRR :63dB at 217Hz

Fast 34ms Startup Time

Low 5mA Quiescent Current at 3.6V Supply and

1.5µA Shutdown Current

Short-Circuit Auto-Recovery and Thermal Protection

Space Saving Packages

-

4mm

× 4mm TQFN-20 package

-

2mm

× 2mm WCSP-16 package

RoHS Compliant and 100% Lead(Pb)-Free,

Halogen-Free

APPLICATIONS

Wireless or Cellular Handsets and PDAs

Portable Audios

Notebook PC

Figure1.