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LM4912  Product Folder

LM4912 Stereo 40mW Low Noise Headphone Amplifier
Generic P/N 4912
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) 2 
User Supply (Volt) 5 
Supply Range +2.0 - +5.5 V 
PowerAtEightOhms OnePercentTHD (Watt) - 
PowerAtSixteenOhms OnePercentTHD (Watt) .1450 
PowerAtThirtyTwoOhms OnePercentTHD (Watt) .08 
PowerAtEightOhms TenPercentTHD (Watt) - 
PowerAtSixteenOhms TenPercentTHD (Watt) .15 
PowerAtThirtyTwoOhms TenPercentTHD (Watt) .11 
SNR (dB) 110 
SNR Conditions Po=.048W 
PSRR (dB) 65 
PSRR Conditions f=1 kHz 
THD (%) - 
THD Conditions - 

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM4912 Boomer ® Audio Power Amplifier Series Stereo 40mW Low Noise Headphone Amplifier 699 Kbytes 4-Jun-03 View Online Download Receive via Email

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

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LM4912MMMINI SOIC10StatusFull productionN/AN/ASamples
Buy Now		1K+$0.60reel
of
1000		ZXTT
GA7
13-15 weeks50000
LM4912MMXMINI SOIC10StatusFull productionN/AN/A 1K+$0.60reel
of
3500		ZXTT
GA7
13-15 weeks50000

General Description

The LM4912 is an stereo audio power amplifier capable of delivering 40mW per channel of continuous average power into a 16 load or 25mW per channel into a 32 load at 1% THD form a 3V power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4912 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems.

The LM4912 features a low-power consumption shutdown mode and a power mute mode that allows for faster turn on time with less than 1mV voltage change at outputs on release. Additionally, the LM4912 features an internal thermal shutdown protection mechanism.

The LM4912 is unity gain stable and may be configured with external gain-setting resistors.

Features

  • External gain-setting capability
  • Available in space-saving MSOP package
  • Ultra low current shutdown mode
  • Mute mode allows fast turn-on (10ms) with less than 1mV change on outputs
  • 2.0V - 5.5V operation
  • Ultra low noise
  • Operation at low supply voltages

Key Specification

PSRR at 217 Hz and 1kHz

65dB (typ)

Output Power at 1kHz with VDD = 2.4V, 1% THD+N into a 16 load

25mW (typ)

Output Power at 1kHz with VDD = 3V, 1% THD+N into a 16 load

40mW (typ)

Shutdown Current

1.0µA (max)

Output Voltage change on release from Shutdown VDD = 2.4V, RL = 16

1mV (max)

Output Noise, 20Hz to 20kHz, A-weighted

10µV (typ)

Applications

  • Portable CD players
  • PDAs
  • Portable electronics devices

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM4912MMCMOS721420014108000005226190940
LM4912MMXCMOS721420014108000005226190940

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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