Dual 20 Watt Audio Power Amplifier

Overture Audio Power Amplifier Series Dual 20-Watt Audio Power Amplifier with Mute and Standby Modes
 

The LM1876 is a stereo audio amplifier capable of delivering typically 20W per channel of continuous average output power into a 4 or 8 load with less than 0.1% THD+N. Each amplifier has an independent smooth transition fade-in/out mute and a power conserving standby mode which can be controlled by external logic.

The performance of the LM1876, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, places it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are safeguarded at the output against overvoltage, undervoltage, overloads, including thermal runaway and instantaneous temperature peaks.

Dual 20-Watt Audio Power Amplifier Circuit Diagram

Key Specification

THD+N at 1kHz at 2 x 15W continuous average
output power into 4 or 8:	0.1% (max)
THD+N at 1kHz at continuous average
output power of 2 x 20W into 8:	0.009% (typ)
Standby current:	4.2mA (typ)

Applications :

High-end stereo TVs

Component stereo

Compact stereo
Features :

SPiKe protection

Minimal amount of external components necessary

Quiet fade-in/out mute mode

Standby-mode

Isolated 15-lead TO-220 package

Non-Isolated 15-lead TO-220 package

Wide supply range 20V - 64V