LM4852 Datasheet | National Semiconductor

Description The LM4852 is an audio power amplifier system capable of delivering 1.1W (typ) of continuous average power into a mono 8Ω bridged-tied load (BTL) with 1% THD+N and 60m W (typ) per channel of continuous average power into stereo 32Ω single-ended (SE) loads with 0.5% THD+N, using a 5V power supply. The LM4852 features a 32 step digital volume control and eight distinct output modes. The digital volume control and output modes are programmed through a two-wire I2C patible control interface, that allows flexibility in routing and mixing audio channels. The LM4852 has 3 channels: one pair for a two-channel stereo signal and the third for a single-channel mono input. The LM4852 is designed for cellular phone, PDA, and other portable handheld applications. It delivers high quality output power from a surface-mount package and requires only seven external ponents. The industry leading micro SMD package only utilizes 2mm x 2.3mm of PCB space, making the LM4852 the most space efficient audio sub system available today. Key Specifications n THD+N at 1k Hz, 1.1W into 8Ω BTL n THD+N at 1k Hz, 60m W into 32Ω SE n Single Supply Operation 1.0% (typ) 0.5% (typ) 2.6 to 5.0V Features n 1.1W (typ) output power with 8Ω mono BTL load n 60m W (typ) output power with stereo 32Ω SE loads n I2C programmable 32 step digital volume control (-40.5d B to +6d B) n Eight distinct output modes n micro-SMD and LLP surface mount packaging n "Click and Pop" suppression circuitry n Thermal shutdown protection n Low shutdown current (0.1u A, typ) Applications n Moblie Phones n PDAs Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit Boomer ® is a registered trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation DS200606 .national. Connection Diagrams 18-Bump micro SMD Marking (ITL) 200606E4 Top View X - Date Code T - Die Traceability G - Boomer Family B7 - LM4852ITL 200606A9 Top View (Bump-side down) Order...