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| 74HC4046A Datasheet, PDF (28/34 Pages) NXP Semiconductors – Phase-locked-loop with VCO | |||
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Philips Semiconductors
Phase-locked-loop with VCO
Product speciï¬cation
74HC/HCT4046A
To obtain optimum VCO performance, C1 must be as small as possible but larger than 100 pF.
Interpolation for various values of R1 can be easily calculated because a constant R1C1 product will produce almost the same VCO output frequency.
Fig.29 Typical value of VCO centre frequency (fo) as a function of C1: R2 = â; VVCOIN = 1/2 VCC; INH = GND;
Tamb = 25 °C.
1997 Nov 25
28
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