PA3312-N24-T datasheet(5/10 Pages) UTC

Part #	PA3312-N24-T

Description	DUAL 2.6W AUDIO POWER AMPLIFIER WITH FOUR SELECTABLE GAIN SETTINGS

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Manufacturer	UTC [Unisonic Technologies]

Direct Link	http://www.utc-ic.com

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5 / 10 page

PA3312

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

5 of 10

www.unisonic.com.tw

QW-R107-055.A

TYPICAL APPLICATION CIRCUIT

R

MUX

Volume

Control

PC-

Beep

RHPIN

RLINEIN

RIN

PC-BEEP

ROUT+

ROUT-

Volume

Control

L

MUX

SE/BEL

HP/LINE

LHPIN

LLINEIN

LIN

Volume

Control

Gain/

MUX

Control

Depop

Circuitry

GAIN0

GAIN1

Volume

Control

100KΩ

COUTR

330µF

1KΩ

Power

Manag

ement

CLUTL

330µF

CSR

0.1µF

VDD

CSR

0.1µF

See Note A

To System

Control

1, 12,

13, 24

22

11

19

18

4

LOUT+

LOUT- 9

GND

SHUT

DOWN

BYPASS

VDD

PVDD

16

21

VDD

1KΩ

CBYP

0.47µF

10

5

6

15

17

2, 3

14

8

23

20

CIRHP

0.47µF

A. A 0.1-µF ceramic capacitor should be placed as close as possible to the IC. For filtering

lower frequency noise signals, a larger electrolytic capacitor of 10 µF or greater should be

placed near the audio power amplifier.

CIRLINE

0.47µF

CRIN

0.47µF

CPCB

0.47µF

CILHP

0.47µF

CILLINE

0.47µF

CLIN

0.47µF

Left

Line

Input

Signal

PC-

BEEP

Input

Signal

Left

Head−

phone

Input

Signal

Right

Line

Input

Signal

Right

Head−

phone

Input

Signal

Typical PA3312 Application Circuit Using Single-Ended Inputs and Input MUX

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PA3312-N24-T Datasheet(PDF) 5 Page - Unisonic Technologies

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