Casio CTK-450 User Manual

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Power Amplifier (LA4598)
LA4598 is a 2-channel power amplifier with stand-by switch.
The following table shows the pin functiion of the power amplifier.
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 Stand by In Power 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 hannel 2 output
13 Ch2 B.S. Terminal for bootstrap capacitor
14 NC Not used.
6
5
8
7
10
11
13
12
9
4
1
3
2
Input
Amp.
Pre-drive
Amp.
Power
Amp.
TSD protector
Stand by
Bias circuit
Input
Amp.
Pre-drive
Amp.
Power
Amp.
Ch1 IN
Ch1 NF
Pre GND
D.C.
Ch2 IN
CH2 NF
CH2 BS
CH1 OUT
POWER GND
VCC
STAND BY
CH2 OUT
CH2 BS
Block Diagram

Casio CTK-450 Specifications

General

Brand	Casio
Model	CTK-450
Category	Electronic Keyboard
Language	English