LM4836 Datasheet | National Semiconductor

Description The LM4836 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4Ω (Note 1) with less than 1.0% THD+N, or 2.2W into 3Ω (Note 2) with less than 1.0% THD+N. Boomer ® audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external ponents. The LM4836 incorporates a DC volume control, stereo bridged audio power amplifiers, selectable gain or bass boost, and an input mux making it optimally suited for multimedia monitors, portable radios, desktop, and portable puter applications. The LM4836 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance. Note 1: When properly mounted to the circuit board, the LM4836MTE will deliver 2W into 4Ω. The LM4836MT will deliver 1.1W into 8Ω. See the Application Information section for LM4836MTE usage information. Note 2: An LM4836MTE which has been properly mounted to the circuit board and forced-air cooled will deliver 2.2W into 3Ω. Key Specifications n PO at 1% THD+N into 3Ω (LM4836MTE) into 4Ω (LM4836MTE) into 8Ω (LM4836) n Single-ended mode - THD+N at 85m W into 32Ω n Shutdown current 2.2W(typ) 2.0W(typ) 1.1W(typ) 1.0%(typ) 0.2µA(typ) Features PC98 and PC99 pliant DC Volume Control Interface Input mux System Beep Detect Stereo switchable bridged/single-ended power amplifiers Selectable internal/external gain and bass boost configurable n “Click and pop” suppression circuitry n Thermal shutdown protection circuitry n n n n n n Applications n Portable and Desktop puters n Multimedia Monitors n Portable Radios, PDAs, and Portable TVs Connection Diagram TSSOP Package DS101088-2 Top View Order Number LM4836MT See NS Package Number MTC28 for TSSOP Order Number LM4836MTE See NS Package Number MXA28A for Exposed DAP TSSOP Boomer ® is a registered trademark of National...