LM3876 - High-Performance 56W Audio Power Amplifier with Mute
Datasheet Packaging Samples & Pricing Knowledge Base

Features
•56W continuous average output power into 8
•100W instantaneous peak output power capability
•Signal-to-Noise Ratio >= 95 dB(min)
•An input mute function
•Output protection from a short to ground or to the supplies via internal current limiting circuitry
•Output over-voltage protection against transients from inductive loads
•Supply under-voltage protection, not allowing internal biasing to occur when |VEE| + |VCC| <= 12V, thus eliminating turn-on and turn-off transients
•11-lead TO-220 package
•Wide supply range 20V - 94V

General Description

The LM3876 is a high-performance audio power amplifier capable of delivering 56W of continuous average power to an 8 load with 0.1% THD+N from 20Hz-20kHz.

The performance of the LM3876, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). More...


Applications

•Component stereo
•Compact stereo
•Self-powered speakers
•Surround-sound amplifiers
•High-end stereo TVs
  Typical Application
click for larger image


ParametersValues
Power@ 4Ohms, 1% THD 60 Watt
Power@ 8Ohms, 1% THD 45 Watt
Power@ 8Ohms, 10% THD 56 Watt
THD 0.06 %
SNR 98 dB
Channels 1 Channels
THD Conditions Po=40W @ Vs=±35V
PSRR Conditions Undefined
SNR Conditions Undefined
User Supply 35 Volt
Supply Range +24 - +84V
Mute/Shutdown Mute
Gain Bandwidth 8 MHz
Slew Rate 11 Volts/usec
Temperature Min -20 deg C
Temperature Max 85 deg C


Typical Performance

*click for larger image


  Connection Diagram
click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM3876 Overture™ Audio Power Amplifier Series High-Performance 56W Audio Power Amplifier w/Mute 1045
Kbytes		 4-Nov-04 Download
LM3876 Overture™ Audio Power Amplifier Series High-Performance 56W Audio Power Amplifier w/Mute (Japanese)
 324 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LM3876TTO-22011NOPB
STD		1
1		NA
NA		RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$3.65rail
of
20		NSUZXYTTE#
LM3876T
16 weeks1000
LM3876TFISOLATED TO22011NOPB1NARoHS N/A Full productionN/A
Samples
Buy Now 		1K+$3.65rail
of
20		NSUZXYTTE#
LM3876TF
12 weeks1000

General Description

The LM3876 is a high-performance audio power amplifier capable of delivering 56W of continuous average power to an 8 load with 0.1% THD+N from 20Hz-20kHz.

The performance of the LM3876, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts 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 completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks.

The LM3876 maintains an excellent signal-to-noise ratio of greater than 95dB (min) with a typical low noise floor of 2.0µV. It exhibits extremely low THD+N values of 0.06% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.

Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-898: Application Note 898 Audio Amplifiers Utilizing: SPiKe Protection 1412
Kbytes		 20-Sep-02 Download
AN-898 (Japanese): Application Note 898 Audio Amplifiers Utilizing: SPiKe Protection
 249 Kbytes   Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 7-Nov-2009]