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LM4674

National Semiconductor
Part Number LM4674
Manufacturer National Semiconductor
Description Filterless 2.5W Stereo Class D Audio Power Amplifier
Published Jan 4, 2007
Detailed Description www.DataSheet4U.com LM4674 Filterless 2.5W Stereo Class D Audio Power Amplifier December 2005 LM4674 Filterless 2.5W ...
Datasheet PDF File LM4674 PDF File

LM4674
LM4674

Overview
www.
DataSheet4U.
com LM4674 Filterless 2.
5W Stereo Class D Audio Power Amplifier December 2005 LM4674 Filterless 2.
5W Stereo Class D Audio Power Amplifier General Description The LM4674 is a single supply, high efficiency, 2.
5W/ channel, filterless switching audio amplifier.
A low noise PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.
The LM4674 is designed to meet the demands of mobile phones and other portable communication devices.
Operating from a single 5V supply, the device is capable of delivering 2.
5W/channel of continuous output power to a 4Ω load with less than 10% THD+N.
Flexible power supply requirements allow operation from 2.
4V to 5.
5V.
The LM4674 features high efficiency compared to conventional Class AB amplifiers.
When driving and 8Ω speaker from a 3.
6V supply, the device features 85% efficiency at PO = 500mW.
Four gain options are pin selectable through the GAIN0 and GAIN1 ...


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