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REV. A

BLOCK DIAGRAM

PIN NUMBERS, PIN NAMES

No.

Pin Name

Description

No.

Pin Name

Description

1

OPIN-

operational amplifier negative

input terminal

15

CH4OUTR

CH4 reverse output terminal

2

OPIN+

operational amplifier positive

input terminal

16

CH4OUTF

CH4 forward output terminal

3

SW

CH4 input selecting switch

terminal

17

CH3OUTF

CH3 forward output terminal

4

CH1FIN

CH1PWM forward input

18

CH3OUTR

CH3 reverse output terminal

5

CH1RIN

CH1PWM reverse input

19

POWVCC

power part power supply

voltage (CH3, 4)

6

CH2FIN

CH2PWM forward input

20

MUTE

mute terminal

7

CH2RIN

CH2PWM reverse input

21

GND

GND

8

GND

GND

22

CH3RIN

CH3PWM reverse input

9

VREFIN

internal Vref voltage input

terminal

23

CH3FIN

CH3PWM forward input

10

POWVCC

power part power supply voltage

(CH1, 2)

24

CH4IN

CH4 input terminal

11

CH2OUTR

CH2 reverse output terminal

25

CH4CAPA

CH4 external CAPA

connection terminal

12

CH2OUTF

CH2 forward output terminal

26

OUTVREF

CH4 external reference

voltage input terminal

13

CH1OUTR

CH1 reverse output terminal

27

OPOUT

operational amplifier output

terminal

14

CH1OUTF

CH1 forward output terminal

28

PREVCC

pre-stage power supply

voltage

* Polarities for the F output and the R output. For CH4, when PIN24 is High, PIN16 outputs High.