EUA2008

3-W Stereo Class-D Audio Amplifier with 32-Step DC Volume Control DESCRIPTION The EUA2008 is a high efficiency, 2 channel bridged-tied load (BTL), class-D audio power amplifier. Operating from a 5V power supply, EUA2008 is capable of delivering 3W/ channel of continuous output power to a 3Ω load with 10% THD+N. The EUA2008 features a differential input architecture offering improved noise immunity over a single-ended (SE) input amplifier. Stereo speaker volume is controlled with a dc voltage applied to the volume control terminal offering a range of gain from -38dB to20 dB. The EUA2008 also features short-circuit and thermal protection preventing the device from being damaged during a fault condition. The EUA2008 is available in thermally efficient 24-pin TSSOP package. EUA2008 FEATURES Unique Modulation Scheme Reduces EMI Emission Efficient 5V Class-D Technology - 3W Per Channel into 3Ω Load (THD+N=10%) - Low Supply Current, 7mA - Low Shutdown Control, 1µA - 0.33% THD at 1.5W, 1kHz - Low Noise Floor, 62µV - Maximum Efficiency into 3Ω, 85% - Maximum Efficiency into 8Ω, 90% - PSRR, -70dB No Large, Expensive LC Output Filter Required 32-Step DC Volume Control with 2dB Steps from -38dB to 20dB Thermal and Short-Circuit Protection Integrated Click and Pop Suppression 24-pin TSSOP Package with Thermal Pad RoHS Compliant and 100% Lead(Pb)-Free Halogen-Free APPLICATIONS LCD Monitors/TVs All-in- One PCs Powered Speakers Typical Application Circuit Figure1. DS2008 Ver 1.0 Oct. 2009 1