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 Products > Audio Products > Boomer Audio Power Amplifiers <6V,<3W > LM4840

LM4840  Product Folder

Stereo 2W Audio Power Amplifiers with Digital Volume Control and Input Mux
Generic P/N 4840
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 +2.7 - +5.5 V 
PowerAtFourOhms OnePercentTHD (Watt) 2 
PowerAtEightOhms OnePercentTHD (Watt) 1 
PowerAtFourOhms TenPercentTHD (Watt) - 
PowerAtEightOhms TenPercentTHD (Watt) 1.50 
SNR (dB) 93 
SNR Conditions vdd=5v, pot=1.1w, rl=8, A wegihted 
PSRR (dB) 74 
PSRR Conditions cb=1uf, f=120hz, vripple=200mvrms, rl=8 
THD (%) .30 
THD Conditions p=1w, 20-20khz, rl=8avd=2 
Audio Mux Yes 

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LM4840 BOOMER™ Stereo 2W Audio Power Amplifierswith Digital Volume Control and Input Mux 786 Kbytes 6-Dec-01 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
LM4840LQLLP28StatusFull productionN/AN/ASamples
Buy Now		1K+$1.70reel
of
1000		NS
UZXYTT
L4840LQ
8-10 weeks10000
LM4840LQXLLP28StatusFull productionN/AN/A 1K+$1.70reel
of
4500		NS
UZXYTT
L4840LQ
8-10 weeks10000
LM4840MTTSSOP28StatusFull productionN/AN/ASamples1K+$1.70rail
of
48		NSUZXYTT
LM4840MT
12-14 weeks10000
LM4840MTXTSSOP28StatusFull productionN/AN/A 1K+$1.70reel
of
2500		NSUZXYTT
LM4840MT
12-14 weeks10000
LM4840MHTSSOP EXP PAD28StatusFull productionN/AN/ASamples
Buy Now		1K+$1.70rail
of
48		NSUZXYTT
LM4840MH
8-10 weeks10000
LM4840MHXTSSOP EXP PAD28StatusFull productionN/AN/A 
Buy Now		1K+$1.70reel
of
2500		NSUZXYTT
LM4840MH
8-10 weeks10000

General Description

The LM4840 is a monolithic integrated circuit that provides digital volume control and stereo bridged audio power amplifiers capable of producing 2W into 4 with less than 1.0% THD or 2.2W into 3 with less than 1.0% THD.

Boomer® audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4840 incorporates a digital volume control, stereo bridged audio power amplifiers, an input mux, and a last volume level memory function to save the volume setting during shutdown. These features make it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications.

The LM4840 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance.

Features

  • PC98 and PC99 Compliant
  • Digital Volume Control Interface
  • System Beep Detect
  • Stereo switchable bridged/single-ended power amplifiers
  • "Click and pop" suppression circuitry
  • Thermal shutdown protection circuitry
  • Input Mux
  • Capless headphone drivers
  • Last volume memory from shutdown

Key Specification

PO at 1% THD+N

 

into 3 (LM4840LQ, LM4840MH)

2.2W (typ)

into 4 (LM4840LQ, LM4840MH)

2.0W (typ)

into 8 (LM4840)

1.1W (typ)

Single-ended mode - THD+N at 85mW into 32

1.0% (typ)

Shutdown current

0.2µA (typ)

Applications

  • Portable and Desktop Computers
  • Multimedia Monitors
  • Portable Radios, PDAs, and Portable TVs

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LM4840LQCS06508800006000006169643205
LM4840LQXCS06508800006000006169643205
LM4840MHCS06508800006000006169643205
LM4840MHXCS06508800006000006169643205
LM4840MTCS06508800006000006169643205
LM4840MTXCS06508800006000006169643205

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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