UNISONIC TECHNOLOGIES CO., LTD

PA3427

Preliminary

CMOS IC

www.unisonic.com.tw

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Copyright © 2015 Unisonic Technologies Co., Ltd

QW-R502-357.b

2W STEREO AUDIO AMPLIFIER

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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.

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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

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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: HTSSOP-24

(3) G: Halogen Free and Lead Free

(3)Green Package

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MARKING