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PA3427 Datasheet



The UTC PA3427 is a stereo audio speaker operated on a single
5V supply. It is capable of delivering 2W of output power per channel
in Bridge-Tied Load mode into 4Ω load with less than 1% THD+N.
Two terminals (GAIN0 and GAIN1) can configure and control the
amplifier gain. In order to simplify the design of audio system in the
notebook application, the two modes of Bridge-Tied Load (BTL) and
Single-End (SE) mode drive the speakers and headphone
respectively. The UTC PA3427 supports two input paths to choose
two different amplitude AC signals through setting HP/ LINE pin.
The UTC PA3427 is suitable for applications, such as stereo
power amplifiers of notebooks or desktop computers, and multimedia monitors.

* Depop circuitry integrated
* BTL gain: 6dB, 10dB, 15.6dB, 21.6dB
 SE gain: 4.1dB
* Output power (THD+N:1%, supply voltage:5V)
 − 2.0W into a 4Ω load
 − 1.2W into a 8Ω load
* With two mode :BTL and SE
* Stereo input multiplexer
* Fully differential input
* Build-in gain control
* PC-Beep input function
* Thermal shutdown protection
* Halogen Free  
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