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LM4940

Features: Pop & click circuitry eliminates noise during turn-on and turn-off transitionsLow current, active-low shutdown modeLow quiescent currentStereo 6W output, RL = 4Short circuit protectionUnity-gain stableExternal gain configuration capabilityApplicationFlat Panel MonitorsFlat Panel TV'...

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SeekIC No. : 004395911 Detail

LM4940: Features: Pop & click circuitry eliminates noise during turn-on and turn-off transitionsLow current, active-low shutdown modeLow quiescent currentStereo 6W output, RL = 4Short circuit protectio...

LM4940 Data Sheet

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Part Number:
LM4940
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:

Pop & click circuitry eliminates noise during turn-on and turn-off transitions
Low current, active-low shutdown mode
Low quiescent current
Stereo 6W output, RL = 4
Short circuit protection
Unity-gain stable
External gain configuration capability




Application

Flat Panel Monitors
Flat Panel TV's
Computer Sound Cards




Pinout

Connection Diagram




Specifications

Power@ 4Ohms, 1% THD 3.1 Watt
Power@ 4Ohms, 10% THD 6 Watt
PSRR 56 dB
Channels 2 Channels
Supply Range +10 - +16
PSRR Conditions Vripple 200mV, 12V, 4ohm
User Supply 10 Volt
Shut down Yes
Shutdown Type Low
Mono/Stereo Stereo
Temperature Min -40 deg C
Temperature Max 85 deg C
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Supply Voltage (pin 6, referenced to GND, pins 4 and 5) ...............18.0V
Storage Temperature ..................................................−65°C to +150°C
Input Voltage
pins 3 and 7 .........................................................−0.3V to VDD + 0.3V
pins 1, 2, 8, and 9 ...........................................................−0.3V to 9.5V
Power Dissipation (Note 3)........................................ Internally limited
ESD Susceptibility (Note 4)............................................................ 2000V
ESD Susceptibility (Note 5) ..............................................................200V
Junction Temperature.................................................................... 150°C
Thermal Resistance
JC (TS) .......................................................................................4°C/W
JA (TS) (Note 3) .......................................................................20°C/W
JC (TA) .......................................................................................4°C/W
JA (TA) (Note 3)........................................................................ 20°C/W




Description

The LM4940 is a dual audio power amplifier primarily designed for demanding applications in flat panel monitors and TV's. It is capable of delivering 6 watts per channel to a 4 load with less than 10% THD+N while operating on a 14.4VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4940 does not require bootstrap capacitors or snubber circuits. Therefore, it is ideally suited for display applications requiring high power and minimal size.

The LM4940 features a low-power consumption active-low shutdown mode. Additionally, the LM4940 features an internal thermal shutdown protection mechanism along with short circuit protection.

The LM4940 contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions.

The LM4940 is a unity-gain stable and can be configured by external gain-setting resistors.

More Application Notes

Title Size in Kbytes Date
AN-1567: Application Note 1567 LM4949 Demonstration Board 3533 Kbytes 18-Jul-07 Download
AN-1567 (Chinese): Application Note 1567 LM4949 Demonstration Board
 1008 Kbytes 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
AN-1496: Application Note 1496 Noise, TDMA Noise, and Suppression Techniques 85 Kbytes 28-Apr-08 Download
AN-1496 (Chinese): Application Note 1496 Noise, TDMA Noise, and Suppression Techniques
 407 Kbytes 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">

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