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LM4842  Product Folder

Stereo 2W Amplifiers with DC Volume Control, Transient-Free Outputs, and Cap-less Headphone Drive
Generic P/N 4842
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics

Datasheet

TitleSize in KbytesDate
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LM4842 Boomer ® Audio Power Amplifier Series Stereo 2W Amplifiers with DC Volume Control, Transient Free Outputs, and Cap-less Headphone Drive 1306 Kbytes 11-Sep-02 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
LM4842LQLLP28StatusFull productionN/AN/ASamples1K+$1.10reel
of
1000		NS
UZXYTT
L4842LQ
10-12 weeks10000
LM4842LQXLLP28StatusFull productionN/AN/A 1K+$1.10reel
of
4500		NS
UZXYTT
L4842LQ
10-12 weeks10000
LM4842MTXTSSOP28StatusFull productionN/AN/A 1K+$1.90reel
of
2500		NSUZXYTT
LM4842MT
12-14 weeks10000
LM4842MHXTSSOP EXP PAD28StatusFull productionN/AN/A 1K+$1.70reel
of
2500		NSUZXYTT
LM4842MH
10-12 weeks10000

General Description

The LM4842 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4 or 2.2W into 3 with less than 1.0% THD+N.

Boomer® audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4842 incorporates a DC volume control, stereo bridged audio power amplifiers, new cap-less headphone driver circuit (patent pending), selectable gain or bass boost, and an input mux making it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications.

The LM4842 features an externally controlled, low-power consumption shutdown mode (Shutdown Low), and both a power amplifier and headphone mute for maximum system flexibility and performance.

Features

  • Stereo headphone amplifier mode that eliminates the Output Coupling Capacitors (patent pending)
  • Advanced "click and pop" suppression circuitry
  • Acoustically Enhanced DC Volume Control Taper
  • 2 Channel Stereo Input MUX
  • System Beep Detect
  • Stereo switchable bridged/single-ended power amplifiers
  • Selectable internal/external gain and bass boost
  • Thermal shutdown protection circuitry

Key Specification

PO at 1% THD+N

  

into 3 (MH and LQ)

2.2W(typ)

into 4 (MH and LQ)

2.0W(typ)

into 8 (MT, MH, and LQ)

1.1W(typ)

Single-ended THD+N at 85mW into 32

1.0%(typ)

Shutdown current (Shutdown Low)

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
LM4842LQCS06508800006000006169643205
LM4842LQXCS06508800006000006169643205
LM4842MHXCS06508800006000006169643205
LM4842MTXCS06508800006000006169643205

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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