POWER AMPLIFIER(LA4598)

LA4598 is 2-channel power amplifier with standby switch.

Pin No.

Terminal

In/Out

Function

1

Power GND

In

Ground(0V) source.

2

Ch1 B.S.

-

Terminal for bootstrap capacitor.

3

Ch1 OUT

Out

Channel 1 output.

4

VCC

In

+9V source.

5

Ch1 N.F.

In

Negative feedback input.

6

Ch1 IN

In

Channel 1 input.

7

D.C.

-

Terminal for decoupling capacitor.

8

Pre GND

In

Ground(0V) source.

9

Standby

In

Control signal input. 0V:OFF / +9V:ON

10

Ch2 IN

In

Channel 2 input.

11

Ch2 N.F.

In

Negative feedback input.

12

Ch2 OUT

Out

Channel 2 output.

13

Ch2 B.S.

-

Terminal for bootstrap capacitor.

14

NC

-

Not used.

INTERNAL BLOCK DIAGRAM

Ch1 IN 6

Ch1 NF 5

Pre GND 8

Input AMP.

Pre-drivePower

AMP.AMP.

TSD protector

2CH2 BS

3CH1 OUT

1POWER GND

4VCC

D.C. 7 Bias circuit

Ch2 IN 10Input

AMP.

CH2 NF 11

Stand by

 

9 STAND BY

 

 

 

 

Pre-drive

Power

12

CH2 OUT

AMP.

AMP.

 

 

 

 

 

13 CH2 BS

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Casio CTK-650 manual Power AMPLIFIERLA4598