EMA2203

ESMT/EMP Volume Control and Headphone GENERAL DESCRIPTION The EMA2203 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4Ω or 2.4W into 3Ω with less than 1.0% THD+N. 1.1W (typ) into 8Ω EMA2203 Stereo 2.4W Audio Power Amplifier with DC ． BTL mode PO at 5V, f=1kHz, 10% THD+N 3W (typ) into 3Ω ． Single-ended mode PO at 5V, f=1kHz, 1% THD+N 85mW (typ) into 32Ω ． Shutdown current 0.1µA (typ) The EMA2203 incorporates a DC volume control, stereo bridged audio power amplifiers making it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications. The EMA2203 features an low-power consumption shutdown mode, and both power amplifier and headphone.. FEATURES ． 32 steps DC Volume Control ． Stereo switchable bridged/single-ended power amplifiers ． “Click and pop” suppression circuitry ． Thermal shutdown protection circuitry Advanced pop & click circuitry is built in to eliminate noises that would otherwise occur during turn-on and turn-off transitions. APPLICATIONS ． Portable and Desktop Computers ． Multimedia Monitors KEY SPECIFICATION ． BTL mode PO at 5V, f=1kHz, 1% THD+N 2.4W (typ) into 3Ω 2.0W (typ) into 4Ω ． Portable Radios, PDAs, and Portable TVs Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date : Jun. 2009 Revision : 2.0 1/17 ESMT/EMP FUNCTION BLOCK DIAGRAM EMA2203 Elite Semiconductor Memory Technology Inc./...