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LM4902  Product Folder

265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode
Generic P/N 4902
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics

Parametric Table Parametric Table
Temperature Min (deg C) -40 
Temperature Max (deg C) 85 
Channels (Channels) 1 
User Supply (Volt) 5 
Supply Range +2.0 - +5.5 V 
PowerAtFourOhms OnePercentTHD (Watt) - 
PowerAtEightOhms OnePercentTHD (Watt) .6750 
PowerAtFourOhms TenPercentTHD (Watt) - 
PowerAtEightOhms TenPercentTHD (Watt) 1 
SNR (dB) - 
SNR Conditions 67 
PSRR (dB) Vripple=0.2Vrms sine p-p, f=1kHz 
PSRR Conditions .40 
THD (%) Po = 0.4Wrms, Avd=2, RL=8ohms 
THD Conditions No 
Audio Mux  

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM4902 ™BOOMER 265mW at 3.3V Supply Audio Power Amplifier with Shutdown Mode 772 Kbytes 6-Feb-02 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
LM4902LDLLP8StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.40reel
of
1000		XYTT
GA3
8-10 weeks30000
LM4902LDXLLP8StatusFull productionN/AN/A 1K+$0.40reel
of
4500		XYTT
GA3
8-10 weeks200000
LM4902MMMINI SOIC8StatusFull productionN/AN/A24 Hour Samples
Buy Now		1K+$0.40reel
of
1000		ZXTT
GC3
15-17 weeks100000
LM4902MMXMINI SOIC8StatusFull productionN/AN/A 1K+$0.40reel
of
3500		ZXTT
GC3
15-17 weeks100000

General Description

The LM4902 is a bridged audio power amplifier capable of delivering 265mW of continuous average power into an 8 load with 1% THD+N from a 3.3V power supply.

Boomer® audio power amplifiers were designed specifically to provide high quality output power from a low supply voltage while requiring a minimal amount of external components. Since the LM4902 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications.

The LM4902 features an externally controlled, low power consumption shutdown mode, and thermal shutdown protection.

The closed loop response of the unity-gain stable LM4902 can be configured by external gain-setting resistors.

Features

  • MSOP and LLP packaging
  • No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary
  • Thermal shutdown protection circuitry
  • Unity-gain stable
  • External gain configuration capability
  • Latest generation "click and pop" suppression circuitry

Key Specification

THD+N at 1kHz for 265mW continuous average output power into 8, VDD = 3.3V1.0% (max)
THD+N at 1kHz for 675mW continuous average output power into 8, VDD = 5V1.0% (max)
Shutdown current0.1µA (typ)

Applications

  • Cellular phones
  • PDA's
  • Any portable audio application

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM4902LDCMOS721420014108000005226190940
LM4902LDXCMOS721420014108000005226190940
LM4902MMCMOS721420014108000005226190940
LM4902MMXCMOS721420014108000005226190940

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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