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LM4732  Product Folder

Stereo 50W Audio Power Amplifier with Mute
Generic P/N 4732
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics

Parametric Table Parametric Table
Temperature Min (deg C) -20 
Temperature Max (deg C) 85 
Channels (Channels) 2 
User Supply (Volt) 52 
Supply Range ± 20 - ± 84 V 
Gain Bandwidth (MHz) - 
Slew Rate (Volts/usec) 19 
PowerAtFourOhms OnePercentTHD (Watt) 42 
PowerAtEightOhms OnePercentTHD (Watt) 42 
PowerAtFourOhms TenPercentTHD (Watt) 50 
PowerAtEightOhms TenPercentTHD (Watt) 50 
SNR (dB) - 
SNR Conditions 89 
PSRR (dB) Vcc=52V, Vripple=1Vrms, fripple=120Hz sine wave, Vcc=29Vdc 
PSRR Conditions .01 
THD (%) Po=1W, f=1kHz, V=52V, Av=26dB, Rl=8ohm 
THD Conditions  

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM4732 Stereo 50W Audio Power Amplifier with Mute 861 Kbytes 23-Jul-03 View Online Download Receive via Email

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Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LM4732TATO 22027StatusFull productionN/AN/ASamples
Buy Now		1K+$2.57rail
of
15		NSUZXYTT
L4732TA
8-10 weeks25000

General Description

The LM4732 is a stereo audio amplifier capable of typically delivering 50W per channel of continuous average output power into a 4 or 8 load with less than 10% THD+N from 20Hz - 20kHz.

The LM4732 has short circuit protection and a thermal shut down feature that is activated when the die temperature exceeds 150°C. The LM4732 also has an under voltage lock out feature for click and pop free power on and off.

Each amplifier of the LM4732 has an independent smooth transition fade-in/out mute.

The LM4732 has a wide operating supply range from +/-10V - +/-40V allowing for lower cost unregulated power supplies to be used.

The LM4732 amplifiers can easily be configured for bridge or parallel operation for 100W mono solutions.

Features

  • Low external component count
  • Quiet fade-in/out mute mode
  • Wide supply range: 20V - 80V

Key Specification

Output Power/Channel at 10% THD+N, 
1kHz into 4 or 850W (typ)
THD+N at 2 x 1W into 8, 1kHz0.01% (typ)
Mute Attenuation110dB (typ)
PSRR89dB (typ)
Slew Rate19V/µs (typ)

Applications

  • Audio amplifier for component stereo
  • Audio amplifier for compact stereo
  • Audio amplifier for self-powered speakers
  • Audio amplifier for high-end and HD TVs

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM4732TAHV70008800006000006169643205

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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