Audio Amplifiers

The LM4870 and LM4871 from National Semiconductor are bridge-connected Boomer amplifiers designed for laptop or desktop computer sound systems. Both can alternately drive stereo headphones or stereo speakers with up to 1.1W output (8ohms, 0.5% THD) as a speaker driver. Both devices feature superior output power and sound quality from low voltage supplies down to 2.0V with no degradation in performance.

The LM4870 is currently available in a 16-pin SOIC package designated LM4870M. The LM4871 is offered in either a 8-pin small surface-mount package designated LM4871M, or in a n 8-pin dual in-line package designated LM4871N.

National Semiconductor Corporation, 2900, Semiconductor Drive, Santa Clara, CA 95052. Phone: 408-721-5000.