LM4936   
Stereo 2W Audio Power Amplifiers with Volume Control and Selectable Control Interface (SPI or I2C) 		Click link to Download

Features
•Selectable SPI or I2C Control Interface
•System Beep Detect
•Stereo switchable bridged/single-ended power amplifiers
•Selectable internal/external gain and bass boost
•"Click and pop" suppression circuitry
•Thermal shutdown protection circuitry
•Headphone Sense

Description

The LM4936 is a monolithic integrated circuit that provides volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4 with less than 1% THD or 2.2W into 3 with less than 1% THD.

Boomer® audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. The LM4936 incorporates a SPI or I2C Control Interface that runs the volume control, stereo bridged audio power amplifiers and a selectable gain or bass boost. All of the LM4936's features (i.e. SD, Mode, Mute, Gain Sel) make it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications.

The LM4936 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance.

Key Specification

PO at 1% THD+N

 

into 3

2.2W (typ)

into 4

2.0W (typ)

into 8

1.25W (typ)

Single-ended mode - THD+N at 90mW into 32

1%(typ)

Shutdown current

0.7µA (typ)

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



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                                              LM4936
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Typical Application
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Connection Diagram
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Typical Performance
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ParametersValues
Power@ 4Ohms, 10% THD 2.8 Watt
Power@ 4Ohms, 1% THD 2 Watt
Power@ 8Ohms, 10% THD 1.6 Watt
Power@ 8Ohms, 1% THD 1.25 Watt
THD 0.06 %
PSRR 55 dB
Channels 2 Channels
THD Conditions Po=.4W,f=1kHz,Rl=8ohm
PSRR Conditions Cb=1uF,f=120Hz,Input Terminated,Vrip=200mVrms,R=8ohm
User Supply 5 Volt
Audio Mux No
Supply Range +2.7 - +5.5 V
Temperature Min -40 deg C
Temperature Max 85 deg C
Loudspeaker Type Class AB
Headphone Type Cap Coupled
Loudspeaker Outputs 2

Part Number(s)
(NSID)		Top ViewAvailabilityCurrent Reported StockBudgetary PricingStandard Pack Size
LM4936MH/NOPB

RoHS



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

Samples
DistributorRegionQty
DIGIKEYWorldwide1468
KEIKONGAsia Pacific96
$1.85 each at 1K+ pcsrail
of
48
LM4936MHX/NOPB

RoHS



TSSOP EXP PAD		Full production
Lead Time: 6 weeks

 
DistributorRegionQty
DIGIKEYWorldwide0
$1.85 each at 1K+ pcsreel
of
2500

Part Number(s)
(NSID)		Top ViewTypePinsMSL RatingPeak ReflowRoHSCAD SymbolsModelsPackage
Marking
Format
LM4936MH/NOPB
TSSOP EXP PAD281260RoHSDownloadN/A
NSUZXYTTE#
LM4936MH
LM4936MHX/NOPB
TSSOP EXP PAD281260RoHSDownloadN/A
NSUZXYTTE#
LM4936MH

Reliability Metrics
Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM4936MHCMOS70184060010890004309006723
LM4936MHXCMOS70184060010890004309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


[Information as of 22-Nov-2009]