NJM2257
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Ver.2004-02-17
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TERMINAL EXPLANATION
PIN NO. PIN NAME FUNCTION INSIDE EQUIVALENT CIRCUIT
6 VCO-FILTER 2 Decide the Volume to be
transfered shall by decided of
Cramic Oscillator. (90°late)
7 L. P. F L. P. F. of AFC
8 V
+
Supply Voltage
9 VR-1 AFC-HD Output Can be
adjusted by putting resistor
between 9 to GND (9 to V
CC
no adjustment). The pulse width
cam be adjusted by making
changeable of resister (Adjusting
mode)
10 VR-2 AFC-HD Output delay
adjustment by putting 10 pin
resister changeable at 9 pin
ajustment mode.
11 GND Ground
