National Semiconductor LM4926 Ground-Referenced Ultra Low Noise Fixed Gain 80mW Stereo Headphone Amplifier handbook

Update: 30 September, 2023

The LM4926 is a ground referenced, ultra low noise, fixed gain, 80mW stereo headphone amplifier from TI. The chip utilizes a new circuit technology that uses a charge pump to generate a negative reference voltage. This allows the outputs to be biased about ground, thereby eliminating output-coupling capacitors typically used with normal single-ended loads. The LM4926 also features an Automatic Standby Mode circuitry (patent pending). When there is no input signal, after about 12 seconds, the LM4926 will enter low current standby mode. When an input signal is applied to either the left or right input pins, the LM4926 will immediately resume full power operation mode. This feature saves power supply current in battery-operated applications.


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Publication date: 07 May, 2012

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PDF Link: National Semiconductor LM4926 Ground-Referenced Ultra Low Noise Fixed Gain 80mW Stereo Headphone Amplifier handbook PDF

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