Part # LM4856 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM4856 Boomer ® Audio Power Amplifier Series Integrated Audio Amplifier System


Part Details:

LM4856 May 2004 Integrated LM4856Integrated Audio Amplifier SystemGeneral Description Key Specifications The LM4856 is an audio power amplifier system capable of n THD+N at 1kHz, 1.1W into 8 BTL 1.0% (typ) delivering 1.1W (typ) of continuous average power into a Audio n THD+N at 1kHz, 60mW into 32 SE 0.5% (typ) mono 8 bridged-tied load (BTL) with 1% THD+N and n Single Supply Operation 2.6 to 5.0V 60mW (typ) per channel of continuous average power intostereo 32 single-ended (SE) loads with 0.5% THD+N, us- Features ing a 5V power supply. Amplifier n 1.1W (typ) output power with 8 mono BTL load The LM4856 features a 32 step digital volume control and n 60mW (typ) output power with stereo 32 SE loads eight distinct output modes. The digital volume control andoutput modes are programmed through a two-wire I2C com- n I2C programmable 32 step digital volume control patible control interface, that allows flexibility in routing and n Eight distinct output modes mixing audio channels. n micro-SMD and LLP surface mount packaging The LM4856 is designed for cellular phone, PDA, and other n "Click and Pop" suppression circuitry portable handheld applications. It delivers high quality output System n Thermal shutdown protection power from a surface-mount package and requires only n Low shutdown current (0.1uA, typ) eight external components. The industry leading micro SMD package only utilizes 2mm Applications x 2.3mm of PCB space, making the LM4856 the most space n Moblie Phones efficient audio sub system available today. n PDAs Typical Application 20060732 FIGURE 1. Typical Audio Amplifier Application Circuit Boomer® is a registered trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation DS200607 www.national.com Connection Diagrams LM4856 18-Bump micro SMD Marking (ITL) 200607E4 Top View


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LM4856.pdf Datasheet