![](https://csdnimg.cn/release/download_crawler_static/87855004/bg1.jpg)
UNISONIC TECHNOLOGIES CO., LTD
PA3427
Preliminary CMOS IC
1 of 7
Copyright © 2015 Unisonic Technologies Co., Ltd
QW-R502-357.b
2W STEREO AUDIO AMPLIFIER
DESCRIPTION
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.
FEATURES
* 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
ORDERING INFORMATION
Ordering Number Package Packing
PA3427G-N24-R HTSSOP-24 Tape Reel
PA3427G-N24-R
(1)Packing Type
(2)Package Type
(1) R: Tape Reel
(2) N24: HTS
SOP-24
(3
) G: Haloge
n Free and Lead Free
(3)Green Package
MARKING