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 Products > Audio Products > Boomer Audio Power Amplifiers <6V,<3W > LM4873

LM4873  Product Folder

Dual 2.1W Audio Amplifier Plus Stereo Headphone Function
Generic P/N 4873
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 
PowerAtFourOhms OnePercentTHD (Watt) 2.10, 1.90 
PowerAtEightOhms OnePercentTHD (Watt) 1.10 
PowerAtFourOhms TenPercentTHD (Watt) 2.60 
PowerAtEightOhms TenPercentTHD (Watt) 1.50 
SNR (dB) 97 
SNR Conditions - 
PSRR (dB) 67 
PSRR Conditions - 
THD (%) .30 
THD Conditions Po=1W@5V, 8 ohms, 20-20kHz, Po=2W@5V, 4 ohms, 20-20kHz 
Audio Mux Yes 

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM4873 Boomer ® Audio Power Amplifier Series Dual 2.1W Audio Amplifier Plus Stereo Headphone Function 963 Kbytes 4-Oct-02 View Online Download Receive via Email
LM4873 Boomer ® Audio Power Amplifier Series Dual 2.1W Audio Amplifier Plus Stereo Headphone Function (JAPANESE)
 690 Kbytes   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
LM4873IBLmicroSMD20StatusFull productionN/AN/A24 Hour Samples
Buy Now		1K+$1.52reel
of
250		XYTT
I GI
8-10 weeks10000
LM4873IBLXmicroSMD20StatusFull productionN/AN/A 
Buy Now		1K+$1.52reel
of
3000		XYTT
I GI
8-10 weeks50000
LM4873LQLLP24StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.47reel
of
1000		NS
UZXYTT
L4873
8-10 weeks20000
LM4873LQXLLP24StatusFull productionN/AN/A 1K+$1.47reel
of
4500		NS
UZXYTT
L4873
8-10 weeks20000
LM4873MTTSSOP20StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.20rail
of
73		NSUZXYTT
LM4873
MT
12-14 weeks40000
LM4873MTXTSSOP20StatusFull productionN/AN/A 1K+$1.20reel
of
2500		NSUZXYTT
LM4873
MT
12-14 weeks70000
LM4873MTETSSOP EXP PAD20StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.40rail
of
73		NSUZXYTT
LM4873
MTE
8-10 weeks40000
LM4873MTEXTSSOP EXP PAD20StatusFull productionN/AN/A 1K+$1.40reel
of
2500		NSUZXYTT
LM4873
MTE
8-10 weeks100000
LM4873MTE-1TSSOP EXP PAD28StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$2.25rail
of
48		NSUZXYTT
LM4873
MTE-1
8-10 weeks40000
LM4873MTEX-1TSSOP EXP PAD28StatusFull productionN/AN/A 1K+$2.25reel
of
2500		NSUZXYTT
LM4873
MTE-1
8-10 weeks70000
LM4873ITLXmicroSMD20StatusFull productionN/AN/A 1K+$1.52reel
of
3000		XVG
I B2
8-10 weeks10000
LM4873 MDCUnpackaged DieFull productionN/AN/A   tray
of
N/A		-
N/A0
LM4873 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0

General Description

The LM4873 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.1W to a 4 load or 2.4W to a 3 load with less than 1.0% THD+N. In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones. A MUX control pin allows selection between the two stereo sets of amplifier inputs. The MUX control can also be used to select two different closed-loop responses.

Boomer audio power amplifiers were designed specifically to provide high quality output power from a surface mount package while requiring few external components. To simplify audio system design, the LM4873 combines dual bridge speaker amplifiers and stereo headphone amplifiers on one chip.

The LM4873 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce "clicks and pops" during device turn-on.

Features

  • Input mux control and two separate inputs per channel
  • Stereo headphone amplifier mode
  • "Click and pop" suppression circuitry
  • Thermal shutdown protection circuitry
  • PCB area-saving micro SMD and thin micro SMD packages
  • TSSOP and exposed-DAP TSSOP and LLP packages

Key Specification

PO at 1% THD+N  
LM4873LQ, 3, 4 loads 2.4W(typ), 2.1W(typ)
LM4873MTE-1, 3, 4 loads 2.4W(typ), 2.1W(typ)
LM4873IBL, 8 load 1.1W(typ)
LM4873MTE, 4 1.9W(typ)
LM4873, 8 1.1W(typ)
Single-ended mode THD+N at 75mW into 32 0.5%(max)
Shutdown current0.7µA(typ)
Supply voltage range 2V to 5.5V

Applications

  • Multimedia monitors
  • Portable and desktop computers
  • Portable audio systems

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM4873 MDCCS06508800006000006169643205
LM4873 MWCCS06508800006000006169643205
LM4873MTCS06508800006000006169643205
LM4873MTECS06508800006000006169643205
LM4873MTE-1CS06508800006000006169643205
LM4873MTEXCS06508800006000006169643205
LM4873MTEX-1CS06508800006000006169643205
LM4873MTXCS06508800006000006169643205

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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