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| 74HCT9046A Datasheet, PDF (29/40 Pages) NXP Semiconductors – PLL with bandgap controlled VCO | |||
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Philips Semiconductors
PLL with bandgap controlled VCO
Product speciï¬cation
74HCT9046A
General design consideration.
SUBJECT
PLL locks on harmonics at
centre frequency
Noise rejection at signal
input
AC ripple content when PLL
is locked
PHASE
COMPARATOR
PC1
PC2
PC1
PC2
PC1
PC2
DESIGN CONSIDERATION
yes
no
high
low
fr = 2fi; large ripple content at ΦPCIN = 90°
fr = fi; small ripple content at ΦPCIN = 0°
1999 Jan 11
29
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