Filterless High Efficiency 1.3W Switching Audio Amplifier

The LM4667 is a fully integrated 1.3W, single-supply high efficiency (Class D) switching audio amplifier. It features an innovative modulator that eliminates the LC output filter used with typical switching amplifiers. The LM4667 processes analog inputs with a delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators.

This LM4667MMBD is an evaluation board designed to ease the evaluation and effort during the development of a circuit using the LM4667MM. It is an easy to use stand-alone board that requires power and GND, an input signal and an output load.

Audio Evaluation Board Documentation

Features:

• No output filter required for inductive transducers
• Selectable gain of 6dB or 12dB
• Very fast turn on time: 5ms (typ)
• Minimum external components
• "Click and pop" suppression circuitry
• Micro-power shutdown mode
• Short circuit protection

Applications:

• Mobile phones
• PDA's
• Portable electronic devices

Contents:

• Fully Assembled LM4667MM Evaluation Board
• Instructions for where to locate and download the datasheet
     Please note: application information and board layout can be found in datasheet

Audio Evaluation Board Documentation:

• Boomer® and Overture® Amplifiers (gerbers, BOM, layer views and board photos)