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REV. A

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

-

+

LEVEL SHIFT

LEVEL SHIFT

-

+

MUTE

-

+

LEVEL SHIFT

LEVEL SHIFT

-

+

REV

OUTF

FWD

OUTR

16k

10k

10k

16k

16k

10k

10k

16k

ch4

ch3

ch3

ch4

ch2

ch1

ch1

ch2

LD

resister unit [ Ω ]

fig.3 BLOCK DIAGRAM

● Pin description

No

Symbol

Function

No

Symbol

Function

１

FWD

Input for loading forward

１５

VO4(+)

Non inverted output of CH4

２

LDCTL

Loading driver output voltage control

terminal

１６

VO4(-)

Inverted output of CH4

３

TEST

TEST

17

VO3(+)

Non inverted output of CH3

４

IN1

Input of CH1

18

VO3(-)

Inverted output of CH3

５

TEST

TEST

19

GND

Substrate ground

６

TEST

TEST

20

BIAS

Input for Bias-amplifier

７

IN2

Input of CH2

21

MUTE

Input for mute control

８

VCC

VCC

22

OPOUT3

Output of CH3 OP-AMP

９

VOL(-)

Inverted output of loading

23

OPIN3(-)

Inverting input of CH3 OP-AMP

１０

VOL(+)

Non inverted output of loading

24

OPIN3(+)

Non inverting input of CH3

OP-AMP

１１

VO2(-)

Inverted output of CH2

25

OPOUT4

Output of CH4 OP-AMP

１２

VO2(+)

Non inverted output of CH2

26

OPIN4(-)

Inverting input of CH4 OP-AMP

１３

VO1(-)

Inverted output of CH1

27

OPIN4(+)

Non inverting input of CH4 OP-AMP

１４

VO1(+)

Non inverted output of CH1

28

REV

Input for loading reverse

notes) Symbol of + and - (output of drivers) means polarity to input pin.

(For example if voltage of pin4 high, pin14 is high)