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| 74HC7046A Datasheet, PDF (30/38 Pages) NXP Semiconductors – Phase-locked-loop with lock detector | |||
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Philips Semiconductors
Phase-locked-loop with lock detector
Product speciï¬cation
74HC/HCT7046A
(1) To obtain optimum VCO performance, C1 must be as small as possible but larger than 100 pF.
(2) Interpolation for various values of R1 can be easily calculated because a constant R1C1 product will produce
almost the same VCO output frequency.
Fig.27 Typical value of VCO centre frequency (fo) as a function of C1: R2 = â; VVCOIN = 1/2 VCC; INH = GND;
Tamb = 25 °C.
December 1990
30
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