UNISONIC TECHNOLOGIES CO., LTD

PA7493

CMOS IC

www.unisonic.com.tw

1 of 7

Copyright © 2008 Unisonic Technologies Co., Ltd

QW-R502-113.C

2W X 2 CLASS AB AUDIO

POWER AMPLIFIER (WITH

DC_VOLUME CONTROL)

DESCRIPTION

UTC PA7493 provides precise DC volume control, and a stereo

bridged audio power amplifiers capable of producing 2W into 4Ω as

a monolithic integrated circuit. In stand-by the power consumption

is very low. UTC PA7493 combines a stereo single-end (SE) mode

for headphone drive into a single chip and a stereo bridge-tied

loads (BTL) mode for speaker drive(both modes are easily

switched by the SE/BTL input control signal) to simplify the audio

system design. Package size is not occupies PCB space cause the

built-in over-temperature protection. It is suitable for small or

portable products.

FEATURES

* Stereo switch able bridged/single-ended power amplifiers

* Low harmonics distortion

* Include 32 steps volume controller by DC voltage with ysteresis

* “Click and pop” suppression circuitry

* Low current consumption in SHUTDOWN Mode(0.7μA)

* Thermal shutdown

DIP-16

SOP-16

Lead-free:

PA7493L

Halogen-free: PA7493G

ORDERING INFORMATION

Ordering Number

Normal

Lead Free

Halogen Free

Package

Packing

PA7493-D16-T

PA7493L-D16-T

PA7493G-D16-T

DIP-16

Tube

PA7493-S16-R

PA7493L-S16-R

PA7493G-S16-R

SOP-16

Tube

PA7493-S16-T

PA7493L-S16-T

PA7493G-S16-T

SOP-16

Tape Reel