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LM4950  Product Folder

7.5W Mono-BTL or 3.1W Stereo Audio Power Amplifier
Generic P/N 4950
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing

Parametric Table Parametric Table
Temperature Min (deg C) -40 
Temperature Max (deg C) 85 
Channels (Channels) 2 
User Supply (Volt) 12 
Supply Range +9.6 - 16V 
Gain Bandwidth (MHz) - 
Slew Rate (Volts/usec) - 
PowerAtFourOhms OnePercentTHD (Watt) 3.10 
PowerAtEightOhms OnePercentTHD (Watt) - 
PowerAtFourOhms TenPercentTHD (Watt) - 
PowerAtEightOhms TenPercentTHD (Watt) 3.10 
SNR (dB) - 
SNR Conditions 70 
PSRR (dB) Vripple=200mVpp, f=1kHz, RL=8 ohm BTL 
PSRR Conditions .14 
THD (%) Po=2.5Wrms, Av=10, f-1kHz, RL=4 ohm SE 
THD Conditions  

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM4950 Boomer ® Audio Power Amplifier Series 7.5W Mono-BTL or 3.1W Stereo Audio Power Amplifier 1446 Kbytes 11-Nov-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
LM4950TATO 2209StatusFull productionN/AN/ASamples
Buy Now		1K+$0.95rail
of
45		NSUZXYTT
L4950TA
8-10 weeks15000
LM4940TSTO 2639StatusPreliminaryN/AN/ASamples
Buy Now		1K+$0.80rail
of
45		NSUZXYTT
L4940TS
8-10 weeks10000
LM4950TSTO 2639StatusFull productionN/AN/ASamples
Buy Now		1K+$0.95rail
of
45		NSUZXYTT
L4950TS
8-10 weeks15000
LM4940TSXTO 2639StatusPreliminaryN/AN/A 1K+$0.80reel
of
500		NSUZXYTT
L4940TS
8-10 weeks10000
LM4950TSXTO 2639StatusFull productionN/AN/A 1K+$0.95reel
of
500		NSUZXYTT
L4950TS
8-10 weeks15000

General Description

The LM4950 is a dual audio power amplifier primarily designed for demanding applications in flat panel monitors and TV's. It is capable of delivering 3.1 watts per channel to a 4 single-ended load with less than 1% THD+N or 7.5 watts mono BTL to an 8 load, with less than 10% THD+N from a 12VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4950 does not require bootstrap capacitors or snubber circuits. Therefore, it is ideally suited for display applications requiring high power and minimal size.

The LM4950 features a low-power consumption active-low shutdown mode. Additionally, the LM4950 features an internal thermal shutdown protection mechanism along with short circuit protection.

The LM4950 contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions.

The LM4950 is a unity-gain stable and can be configured by external gain-setting resistors.

Features

  • Pop & click circuitry eliminates noise during turn-on and turn-off transitions
  • Low current, active-low shutdown mode
  • Low quiescent current
  • Stereo 3.1W output, RL = 4
  • Mono 7.5W BTL output, RL = 8
  • Short circuit protection
  • Unity-gain stable
  • External gain configuration capability

Key Specification

Quiscent Power Supply Current16mA (typ)
POUT (SE) 
VDD = 12V, RL = 4, 1% THD+N3.1W (typ)
POUT (BTL) 
VDD = 12V, RL = 8, 10% THD+N7.5W (typ)
Shutdown current40µA (typ)

Applications

  • Flat Panel Monitors
  • Flat panel TV's
  • Computer Sound Cards
[Information as of 15-Jan-2004]

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