UNISONIC TECHNOLOGIES CO., LTD

PA0202

CMOS IC

www.unisonic.com.tw

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Copyright © 2005 Unisonic Technologies Co., Ltd

QW-R502-106,A

2-W STEREO AUDIO POWER

AMPLIFIER WITH MUTE

DESCRIPTION

The UTC PA0202 is a monolithic integrated circuit that stereo

bridged audio power amplifiers capable of producing 2 W into 3Ω

with a 5V supply voltage or 800mW into 3Ω with a 3.3V supply

voltage .The UTC PA0202 simplifies design and frees up board

space for other features. Both of the depop circuitry and the

thermal shutdown protection circuitry are integrated in UTC

PA0202, that reduce clicks and pops noise during power up or

shutdown mode operation.

A MUX control terminal (HP/LINE) allows selection between the

two sets of stereo input signals. To simplify the audio system

design, UTC PA0202 combines a stereo bridge-tied loads

(BTL)mode for speaker drive and a stereo single-end (SE)mode for

headphone drive into a single chip, where both modes are easily

switched by the SE/BTL input control pin signal.

FEATURES

* Improves depop circuitry to eliminate turn-on and turn-off

transients in output

* Output power:

-2W(typ.)@5V into 3Ω with 0.2% THD+N max (1kHz)

-800mW(typ.)@3.3V into 3Ω with 0.2% THD+N max (1kHz)

* Fully specified for use with 3-Ω Loads

* Stereo switchable bridged/single-ended power amplifiers

* Input MUX select terminal

* Thermal-shutdown protection

* Shutdown mode available

HTSSOP-24

*Pb-free plating product number: PA0202L

ORDERING INFORMATION

Order Number

Normal

Lead Free Plating

Package

Packing

PA0202-N24-R

PA0202L-N24-R

HTSSOP-24

Tape Reel

PA0202-N24-T

PA0202L-N24-T

HTSSOP-24

Tube

PA0202L-N24-R

(1)Packing Type

(2)Package Type

(3)Lead Plating

(1) R: Tape Reel, T: Tube

(2) N24: HTSSOP-24

(3) L: Lead Free Plating, Blank: Pb/Sn