LM4667MMBD: 1.3W @ 8Ω, 2.7 ~ 5V, Class D

Summary

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.

Specifications

Manufacturer	Texas Instruments
Category	Audio Amplifiers
Eval Board Part Number	LM4667MMBD/NOPB-ND
Eval Board Supplier	Texas Instruments
Eval Board	Board not Stocked
Amplifier Type	Class D
Number of Outputs	Mono
Output Power (RMS) @ Load	1.3 W @ 8 Ω
Voltage In	2.7 ~ 5.5 V
THD+N (1kHz) @ Conditions	< 0.8% @ 0.1 W (8 Ω, 5V)
Features	Digital Gain Noise Filtering, On-Chip Short Circuit Protection Shutdown, Enable, Standby
Efficiency @ Conditions	>85%, 0.7 ~ 1.3 W @ 8 Ω , 5V >80%, 300 ~ 450 mW @ 8 Ω , 3V >75%, 400 ~ 750 mW @ 4 Ω , 3V
Standby Current [Typical]	10 nA
Quiescent Current [Typical]	3.75 mA (3V), 9 mA (5V)
Component Count + Extras	9 + 6
Application / Target Market	Cell Phones Portable Devices Tablets
Design Author	Texas Instruments
Main I.C. Base Part	LM4667
Quiescent Current [Maximum]	5 mA
Standby Current [Maximum]	2 µA
Date Created By Author	2004-05
Date Added To Library	2013-03