Ground-Referenced, Ultra Low Noise, 80mW Stereo Headphone Amplifier With IntelliSense And I2C Volume Control

The LM4982 is a ground referenced, variable gain Audio Power Amplifier capable of delivering 80mW of continuous average power into a 16 single-ended load with less than 1% THD+N from a 3V power supply. The I2C Volume Control allows +18 to -76 dB gain settings.
The LM4982 utilizes advanced Charge Pump technology to generate the LM4982 's negative supply voltage. This eliminates the need for output-coupling capacitors typically used with single-ended loads.
IntelliSense is a new circuit technology that allows the LM4982 to detect whether a mono or stereo Headphone plug has been inserted into the output jack.
Boomer Audio Power Amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4982 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.
The LM4982 incorporates selectable low-power consumption shutdown and channel select modes.
The LM4982 contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions.
By National Semiconductor Corporation
LM4982 's PackagesLM4982 's pdf datasheet
LM4982TLBD
LM4982TL




LM4982 Pinout, Pinouts
LM4982 pinout,Pin out
This is one package pinout of LM4982,If you need more pinouts please download LM4982's pdf datasheet.

LM4982 Application circuits
LM4982 circuits
This is one application circuit of LM4982,If you need more circuits,please download LM4982's pdf datasheet.


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