Continued from preceding page.
Pin No.
17
Symbol
X1
Pin voltage
LB1813M
Unit (resistance : Ω)
Equivalent circuit
Pin function
• Reference clock generating pin.
18
X2
19
GND
20
ID
High : 4.5V min
Low : 0.4V max
(When VID=5V)
21
DT1
22
DT2
23
DTO
High : 4.5V min
Low : 0.4V max
(When VID=5V)
25
FG0
• Ground pin.
Grounded as with pins 1 and 36.
• Index pulse output pin.
• Pin Connecting the external CR for the delay time
constant circuit.
• Break-down current setting pin for the delay time
constant circuit.
• Index delay pulse output pin.
• FG amplifier output pin.
26
FG–
27
FG+
2.48V
(When VID=5V)
• FG amplifier negative input pin.
• FG amplifier positive input pin.
Generates reference voltage within IC.
Continued to next page.
No.4183-5/8