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LM4985 - Stereo 135mW Low Noise Headphone Amplifier

Description

The LM4985 is a stereo audio power amplifier with internal digitally controlled volume control.

This amplifier is capable of delivering 68mWRMS per channel into a 16Ω load or 38mWRMS per channel into a 32Ω load at 1% THD when powered by a 3.6V power supply and operating in the OCL mode.

Features

  • two functions that optimize system cost and minimize PCB area: an integrated, digitally controlled (I2C bus) volume control and an operational mode that eliminates output signal coupling capacitors (OCL mode). Since the LM4985 does not require bootstrap capacitors, snubber networks, or output coupling capacitors, it is optimally suited for low-power, battery powered portable systems. For added design flexibility, the LM4985 can also be configured for single-ended capacitively coupled outputs. Th.

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www.DataSheet4U.com LM4985 Stereo 135mW Low Noise Headphone Amplifier with Selectable Capacitive Coupled or Capacitor-less (OCL) Output and Digitally Controlled (I2C) Volume Control May 2006 LM4985 Stereo 135mW Low Noise Headphone Amplifier with Selectable Capacitively Coupled or Output Capacitor-less (OCL) Output and Digitally Controlled (I2C) Volume Control General Description The LM4985 is a stereo audio power amplifier with internal digitally controlled volume control. This amplifier is capable of delivering 68mWRMS per channel into a 16Ω load or 38mWRMS per channel into a 32Ω load at 1% THD when powered by a 3.6V power supply and operating in the OCL mode.
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