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LM4838

Features: DC Volume Control InterfaceSystem Beep DetectStereo switchable bridged/single-ended power amplifiersSelectable internal/external gain and bass boost Click and pop suppression circuitryThermal shutdown protection circuitryApplicationPortable and Desktop ComputersMultimedia MonitorsPortab...

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SeekIC No. : 004395791 Detail

LM4838: Features: DC Volume Control InterfaceSystem Beep DetectStereo switchable bridged/single-ended power amplifiersSelectable internal/external gain and bass boost Click and pop suppression circuitryThe...

LM4838 Data Sheet

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Part Number:
LM4838
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

DC Volume 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




Application

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




Pinout

Connection Diagram




Specifications

Power@ 4Ohms, 1% THD 2 Watt
Power@ 8Ohms, 1% THD 1.1 Watt
Power@ 8Ohms, 10% THD 1.5 Watt
THD 0.3 %
PSRR 74 dB
SNR 93 dB
Channels 2 Channels
Supply Range +2.7 - +5.5 V
THD Conditions Po=1W @Vs=5V, 20Hz-20kHz
PSRR Conditions 120 Hz RL=8 Ohms
SNR Conditions Pout=1.1W
User Supply 5 Volt
Shutdown Type High
Temperature Min -40 deg C
Temperature Max 85 deg C
View Using Catalog


Supply Voltage.......................................................................... 6.0V
Storage Temperature ...........................................-.65°C to +150°C
Input Voltage ....................................................−0.3V to VDD +0.3V
Power Dissipation (Note 11).................................. Internally limited
ESD Susceptibility (Note 12)................................................... 2000V
ESD Susceptibility (Note 13)..................................................... 200V
Junction Temperature .............................................................150°C
Soldering Information
Small Outline Package
Vapor Phase (60 sec.) .........................................................215°C
Infrared (15 sec.) .................................................................220°C
See AN-450 "Surface Mounting and their Effects on
Product Reliability" for other methods of soldering surface mount devices.
JC (typ)-LQA028AA .............................................................3°C/W
JA (typ)-LQA028AA ...........................................................42°C/W
JC (typ)-MTC28 .................................................................20°C/W
JA (typ)-MTC28................................................................. 80°C/W
JC (typ)-MXA28A .................................................................2°C/W
JA (typ)-MXA28A (exposed DAP) (Note 4)..........................41°C/W
JA (typ)-MXA28A (exposed DAP) (Note 3)..........................54°C/W
JA (typ)-MXA28A (exposed DAP) (Note 5)..........................59°C/W
JA (typ)-MXA28A (exposed DAP) (Note 6)..........................93°C/W
JA (typ)-ITL36AAA ...........................................................100°C/W
JC (typ)-ITL36AAA (Note 16) .............................................65°C/W
JA (typ)-GRA49A.............................................................. 100°C/W
JC (typ)-GRA49A (Note 17) ...............................................54°C/W




Description

The LM4838 is a monolithic integrated circuit that provides DC volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4 (Note 1) with less than 1.0% THD or 2.2W into 3 (Note 2) 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 LM4838 incorporates a DC volume control, stereo bridged audio power amplifiers and a selectable gain or bass boost, making it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications.

The LM4838 features an externally controlled, low-power consumption shutdown mode, and both a power amplifier and headphone mute for maximum system flexibility and performance.

Note 1: When properly mounted to the circuit board, the LM4838LQ, LM4838MTE, and LM4838GR will deliver 2W into 4. The LM4838MT and LM4838ITL will deliver 1.1W into 8. See Application Information section Exposed-DAP package PCB Mounting Considerations for more information.






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