PA3011

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 7

www.unisonic.com.tw

QW-R502-247

PIN CONFIGURATION

1

2

3

4

5

6

7

8

9

10

PGND

RHPIN

RLINEIN

LLINEIN

LHPIN

24

SE/BTL

VOLUME

SEDIFF

SEMAX

AGND

BYPASS

FADE

SHUTDOWN

23

22

21

20

19

18

17

16

15

11

12

14

13

PGND

HP/LINE

PA3427

PIN DESCRIPTION

PIN #

PIN NAME

I/O

DESCRIPTION

1,13

PGND

Ground, directly connected to thermal pad.

12

O

negative output for left channel

3,11

Supply voltage

10

LHPIN

I

Left channel headphone input, selected when HP/ LINE pin is held high.

9

LLINEIN

I

Line input for left channel, selected when HP/ LINE pin is held low.

8

I

Differential input for left channel. AC ground for single-ended inputs.

7

6

I

Differential input for right channel. AC ground for single-ended inputs.

5

RLINEIN

I

Line input for Right channel, selected when HP/ LINE pin is held low.

4

RHPIN

I

Right channel headphone input, selected when HP/ LINE pin is held high.

2

O

Negative output for right channel.

24

O

Positive output for right channel.

15

SHUTDOW

I

Circuit is in shutdown mode when this pin is held low.

16

FADE

I

If a logic low is placed on this terminal places the amplifier in fade mode; if

a logic high is placed on this terminal normal operation

17

BYPASS

I

Tap to voltage divider for internal midsupply bias generator

18

AGND

Analog ground

19

SEMAX

I

This sets the maximum volume for single ended operation. The DC voltage

20

SEDIFF

I

This sets the difference between BTL volume and SE volume. The DC

21

VOLUME

I

22

HP/LINE

I

MUX control input, hold high to select headphone inputs, hold low to select

line inputs.

23

SE/BTL

I

Hold low for BTL mode, hold high for SE mode.

14

O

Positive output for left channel.