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LM4911  Product Folder

LM4911 Stereo 40mW Low Noise Headphone Amplifier with Selectable Capacitive Coupled or OCL Output
Generic P/N 4911
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) .0850 
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
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LM4911 Boomer ® Audio Power Amplifier Series Stereo 40mW Low Noise Headphone Amplifier with Selectable Capacitive Coupled or OCL Output 1056 Kbytes 12-Feb-03 View Online Download Receive via Email
LM4911 Boomer ® Audio Power Amplifier Series Stereo 40mW Low Noise Headphone Amplifier with Selectable Capacitive Coupled or OCL Output (JAPANESE)
 429 Kbytes   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
LM4911LDLLP10StatusFull productionN/AN/A24 Hour Samples
Buy Now		1K+$0.60reel
of
1000		ZXYTT
L4911
8-10 weeks25000
LM4911LDXLLP10StatusFull productionN/AN/A 1K+$0.60reel
of
4500		ZXYTT
L4911
8-10 weeks50000
LM4911MMMINI SOIC10StatusFull productionN/AN/A24 Hour Samples
Buy Now		1K+$0.60reel
of
1000		ZXTT
GA3
13-15 weeks100000
LM4911MMXMINI SOIC10StatusFull productionN/AN/A 
Buy Now		1K+$0.60reel
of
3500		ZXTT
GA3
13-15 weeks100000

General Description

The LM4911 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+N from 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 LM4911 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. In addition, the LM4911 may be configured for either single-ended capacitively coupled outputs or for OCL outputs (patent pending).

The LM4911 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 LM4911 features an internal thermal shutdown protection mechanism.

The LM4911 is unity gain stable and may be configured with external gain-setting resistors.

Features

  • OCL or capacitively coupled outputs (patent pending)
  • External gain-setting capability
  • Available in space-saving MSOP and LD packages
  • Ultra low current shutdown mode
  • Mute mode allows fast turn-on (1ms) with less than 1mV change on outputs
  • 2V - 5.5V operation
  • Ultra low noise

Key Specification

PSRR at 217Hz 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

2.0µA (max)

Output Voltage change on release from Shutdown VDD = 2.4V, RL = 16 (C-Coupled)

1mV (max)

Mute Current

100µA (max)

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
LM4911LDCMOS721420014108000005226190940
LM4911LDXCMOS721420014108000005226190940
LM4911MMCMOS721420014108000005226190940
LM4911MMXCMOS721420014108000005226190940

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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