LA6245P

No.A0332-4/10

Pin Functions

Pin No.

Symbol

Pin description

1

VIN3−

Front end amplifier, channel 3

Input (

−)

2

VIN3

Front end amplifier, channel 3

Output

3

VREF-IN

Reference voltage input

4

MUTE

Muting control

5

TSD

This pin outputs a low level when the thermal shutdown circuit operates.

6

SW

Switches between the loading and sled inputs.

7

GNDREG

Regulator system ground

8

REGSW

Regulator on/off control

9

GNDS

Signal system ground

10

REG-IN

Connection for the voltage divider output used to set the regulator voltage

11

REG-OUT

Base connection of external PNP transistor

12

VCCREG

Regulator power supply

13

OPOUT

Independent operational amplifier output pin

14

OP−

Independent operational amplifier (

−)

15

OP+

Independent operational amplifier (

+)

16

VIN2

Front end amplifier, channel 2

Output

17

VIN2−

Front end amplifier, channel 2

Input (

−)

18

VCC_S

Signal system power supply

19

VIN1LD

Front end amplifier for the loading system input

20

VIN1

Front end amplifier, channel 1

Output

21

VIN1−

Front end amplifier, channel 1

Input (

−)

22

VCCP1

Power stage power supply for channels 1 and 2

23

NC

No connection

24

VO1+

Channel 1 output (

+)

25

VO1−

Channel 1 output (

−)

26

VO2+

Channel 2 output (

+)

27

VO2−

Channel 2 output (

−)

28

VO3+

Channel 3 output (

+)

29

VO3−

Channel 3 output (

−)

30

VO4+

Channel 4 output (

+)

31

VO4−

Channel 4 output (

−)

32

NC

No connection

33

NC

No connection

34

VCCP2

Channels 3 and 4 : power stage power supply

35

VIN4−

Front end amplifier, channel 4

Input (1)

36

VIN4

Front end amplifier, channel 4

Output

Note:

• The center frame (FR) is used as the power system ground (GNDP). Along with the signal system ground (GNDS), this level must be the lowest

potential in the system.

• The VCC_S (signal system power supply), VCCP1, and VCCP2 (output stage power supplies) must be shorted together externally.