NJM2240
■ BLOCK DIAGRAM & EXTERNAL COMPONENTS
There is stray capacity assembled on PC board, and so select Rx, Cx to the value which pin 2 voltage (search voltage
at VCC locked) becomes about 2V. Cx>4pF, Rx>2.7kΩ
NTSC
4 Multiplier
Cx
6p
Rx
4.3k
PAL
4 Multiplier
5p
3.3k
-2-
Ver.2004-02-17