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PA3138

UTC
Part Number PA3138
Manufacturer UTC
Description DIRECT HEADPHONE DRIVER
Published Apr 20, 2020
Detailed Description UNISONIC TECHNOLOGIES CO., LTD PA3138 DIRECT HEADPHONE DRIVER WITH ADJUSTABLE GAIN CMOS IC  DESCRIPTION The UTC PA313...
Datasheet PDF File PA3138 PDF File

PA3138
PA3138

Overview
UNISONIC TECHNOLOGIES CO.
, LTD PA3138 DIRECT HEADPHONE DRIVER WITH ADJUSTABLE GAIN CMOS IC  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.
The device has differential inputs and uses external resistors for flexible gain setting.
Gain can be configured individually for each channel.
The device can also be configured as a second-order low-pass filter and is ideal for interfacing with PWM audio sources.
The UTC PA3138 has built-in active-mute control for pop-free audio on/off control.
The UTC PA3138 has an external under-voltage detector that mutes the output when monitored voltage drop below set value.
Using the UTC PA3138 in audio products can reduce component count considerably co...


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