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LM4856

National Semiconductor
Part Number LM4856
Manufacturer National Semiconductor
Description Integrated Audio Amplifier System
Published Dec 15, 2011
Detailed Description www.DataSheet.co.kr LM4856 Integrated Audio Amplifier System May 2004 LM4856 Integrated Audio Amplifier System Genera...
Datasheet PDF File LM4856 PDF File

LM4856
LM4856

Overview
www.
DataSheet.
co.
kr LM4856 Integrated Audio Amplifier System May 2004 LM4856 Integrated Audio Amplifier System General Description The LM4856 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 60mW (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 LM4856 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 compatible control interface, that allows flexibility in routing and mixing audio channels.
The LM4856 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 eight external components.
The industry leading micro SMD package only utilizes 2mm x 2.
3mm of PCB space, making the LM4856 the most space efficient audio sub system available today.
Key Specifications n THD+N at 1kHz, 1.
1W into 8Ω BTL n THD+N at 1kHz, 60mW into 32Ω SE n Single Supply Operation 1.
0% (typ) 0.
5% (typ) 2.
6 to 5.
0V Features n n n n n n n n 1.
1W (typ) output power with 8Ω mono BTL load 60mW (typ) output power with stereo 32Ω SE loads I2C programmable 32 step digital volume control Eight distinct output modes micro-SMD and LLP surface mount packaging "Click and Pop" suppression circuitry Thermal shutdown protection Low shutdown current (0.
1uA, typ) Applications n Moblie Phones 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 Datasheet pdf - http://www.
DataSheet4U.
net/ www.
DataSheet.
co.
kr LM4856 Connection Diagrams 18-Bump micro SMD Marking (ITL) 200607E4 Top View X - Date Code T - Die Traceability G - Boomer Fa...


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