Datasheet

1997 Nov 25 7
Philips Semiconductors Product specification
Phase-locked-loop with VCO 74HC/HCT4046A
Fig.6 Phase comparator 1: average output voltage versus input phase difference.
V
DEMOUT
=V
PC2OUT
=
φ
DEMOUT
=(φ
SIGIN
−φ
COMPIN
).
V
CC
π
-----------
φ
SIGIN
φ
COMPIN
–()
Fig.7 Typical waveforms for PLL using phase comparator 1, loop locked at f
o
.
Fig.8 Phase comparator 2: average output voltage versus input phase difference.
V
DEMOUT
=V
PC2OUT
=
φ
DEMOUT
=(φ
SIGIN
−φC
OMPIN
).
V
CC
4π
-----------
φ
SIGIN
φ
COMPIN
–()