Casio CTK-480 User Manual download pdf (Page 6)

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POWER AMPLIFIER (IC101: LA4598)

The power amplifier is a two-channel amplifier with standby switch.

The following table shows the pin function of IC101.

Pin No. Terminal In/Out Function

1 Power GND In Ground (0V) source

2 Ch1 B.S. — Terminal for a 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 a decoupling capacitor

8 Pre GND In Ground (0V) source

9 Stand by In Power control signal input. 0 V: Off, +9 V: 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 a bootstrap capacitor

14 NC — Not used

LED DRIVING

CPU

LSI01

MSM6755B

La~Lg, Lp

CC1~CC3

LVDD

Q106~Q108

LED Driver



1 2 3 4 5 6 7 8 9 10 11 ... 15 16

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Casio CTK-480 User Manual Page 6