Idt2305; Lm4876M (Ic18); M51957Bfp (Ic33) - Casio QT-6000 Service Manual

12. IDT2305 (IC40)
REF 1
CLK2
2
3
CLK1
GND
4

13. LM4876M (IC18)

1
SHUTDOWN
2
BYPASS
3
+ IN
4
– IN

14. M51957BFP (IC33)

NC
1
INPUT
2
NC
3
GND
4
8 CLKOUT
CLK4
7
V
6
DD
REF
5
CLK
8
Vol2
7
GND
6
V
DD
5
Vol1
NC
8
POWER
7
OUTPUT
6
INPUT
DELAY VALUE
5
FUNCTIONALBLOCKDIAGRAM
PLL
1
Typical Application
4 – IN
+
Amp1
3 +IN
–
100kΩ
V /2
DD
2 Bypass
100kΩ
1 Shutdown
Bias
POWER
5uA
-
+
1.25V
DELAY VALUE
GND
— 96 —
8
CLKOUT
3
CLK1
Control
Logic
2
CLK2
5
CLK3
7
CLK4
6
Vo1 5
10kΩ
10kΩ
+
Vo2
8
Amp2
–
Av= –1
GND
7
25uA
OUTPUT
-