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PA3138 Datasheet Direct Headphone Driver

Manufacturer: Unisonic Technologies

Overview: UNISONIC TECHNOLOGIES CO., LTD PA3138 DIRECT HEADPHONE DRIVER WITH ADJUSTABLE GAIN CMOS IC.

General Description

The UTC PA3138 is a pop-free stereo headphone amplifier with the integrated charge pump generating the negative supply rail which allows the removal of the output DC-blocking capacitors.

The UTC PA3138 provides a clean, pop-free ground-biased audio signal.

The UTC PA3138 is capable of driving 25mW into a 32-Ω load with 3.3-V supply voltage.

Key Features

  • Low THD+N90dB.
  • Ground-Referenced Outputs Eliminate DC-Blocking Capacitors.
  • Differential Input and Single-Ended Output.

PA3138 Distributor