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Product Descriptions

HT97220 is a differential input, direct output line driver/headphone amplifier. When powered by 5V, the device provides a 125mW driver for a 32 Ω headphone load. The IC can adjust its gain through external resistors.

IC provides excellent THD+N throughout the entire audio frequency band.

The internal charge pump of the IC inverts the input power supply, generating a negative power supply. The output stage of the amplifier is powered by an input positive power supply and a charge pump output negative power supply. Bipolar power supply causes the output to be biased at zero potential, eliminating the need for large-sized and easily distorted output coupling capacitors.

There is no clicking/popping sound when the IC is powered on or off.

Product Features

? Output does not require DC capacitor isolation

? Excellent bass effect

? No clicking/popping sound

? Low THD+N: minimum 0.001%

? Low noise, VN 7uV

? Supports single ended input and fully differential input

? Wide power supply operating range from 2.5V to 5.2V

? 4.2V power supply, providing 125mW output power for a 32 Ω load rate

? QFN16 3mm * 3mm package

  Product Applications

? Bluetooth earphones

? Smartphones

? Audio, DVD

? Tablets/laptops

? Set-top box

? Portable gaming console

  Specifications

Actual product photos

Product Data Book：

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Official Certificate&Certificate

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Standard packaging

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