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LM4914  Product Folder

1W Monaural, 85mW Stereo Headphone Audio Amplifier
Generic P/N 4914
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics

Datasheet

TitleSize in KbytesDate
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LM4914 Boomer ® Audio Power Amplifier Series 1W Monaural, 85mW Stereo Headphone Audio Amplifier 384 Kbytes 6-Mar-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
LM4914MHTSSOP EXP PAD10StatusFull productionN/AN/ASamples1K+$0.53reel
of
1000		ZXTT
4914
13-15 weeks10000
LM4914MHXTSSOP EXP PAD10StatusFull productionN/AN/A 1K+$0.53reel
of
3500		ZXTT
4914
13-15 weeks10000

General Description

The unity-gain stable LM4914 is both a mono differential output (for bridge-tied loads, or BTL) audio power amplifier and a single-ended (SE) stereo headphone amplifier. Operating on a single 5V supply, the mono BTL mode delivers 1W into an 8 load. In SE stereo mode, the amplifier delivers 85mW to 32 loads. The LM4914 features circuitry that suppresses output transients ("clicks and pops").

The LM4914 is designed for notebook and other handheld portable applications. It delivers high quality output power from a surface-mount package and requires few external components. The LM4914 is pin and functionally compatible with the TPA0253.

Other features include an active-low micro-power shutdown mode and thermal shutdown protection.

The LM4914 is available in a space efficient 10-lead exposed-DAP TSSOP package.

Features

  • Advanced "click and pop" suppression circuitry
  • Stereo headphone amplifier mode
  • Low current micro-power shutdown mode
  • Thermal shutdown protection circuitry
  • 2.5V to 5.5V operation
  • Unity-gain stable
  • Gain set with external resistors
  • Space-saving exposed-DAP TSSOP package

Key Specification

BTL output power (RL = 8) VDD = at 3.0V, THD = 0.1% VDD = at 5.0V, THD = 0.1% 330mW (typ)1W (typ)
SE output power (RL = 32) VDD = at 3.0V, THD = 0.1% VDD = at 5.0V, THD = 0.1%30mW (typ)85mW (typ)
Micro-power shutdown supply current 0.03µA (typ)
PSRR (f = 1kHz) VDD = at 3.0V, BTL Mode VDD = at 5.0V, BTL Mode 52dB (typ)52dB (typ)

Applications

  • PDAs
  • Cellular phones
  • Handheld portable electronic devices

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM4914MHCMOS721420014108000005226190940
LM4914MHXCMOS721420014108000005226190940

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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