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    Electronicdesign Com Products Analog And Mixed Signal Headphone Amp Doubles Playback Time37859
    1. Technologies
    2. Analog

    Headphone Amp Doubles Playback Time

    Oct. 8, 2008
    Extending battery life in portable audio products, the LM48824 stereo headphone amplifier exploits a Class G architecture that significantly increases audio playback time with its adaptive power supply approach that enables very low supply rails. This
    Staff

    Electronicdesign Com Products Analog And Mixed Signal Headphone Amp Doubles Playback Time37859
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    Extending battery life in portable audio products, the LM48824 stereo headphone amplifier exploits a Class G architecture that significantly increases audio playback time with its adaptive power supply approach that enables very low supply rails. This is said to double power-efficiency when compared to typical Class AB headphone amplifiers. The device typically draws 0.9 mA of quiescent current and is available in a 16-bump, 1.7 mm x 1.7 mm, 0.4 mm-pitch micro SMD package. It includes a 32-step I2C-compatible volume control with mute and delivers 37 mW per channel into a 16-Ohm load with less than 1% THD+N at 3.6V. Other specs include a power supply rejection ratio of 105 dB at 217 Hz, which enables the device to operate in noisy environments without additional power-supply conditioning. Available now, price is $1.06 each/1,000. For more information, call NATIONAL SEMICONDUCTOR CORP., Santa Clara, CA. (800) 272-9959.

    Company: NATIONAL SEMICONDUCTOR CORP.

    Product URL: Click here for more information

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