Philips Semiconductors
Product specification
Phase-locked-loop with VCO
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°C
74HC/HCT4046A
TYPICAL
SYMBOL
f
o
C
I
C
PD
Notes
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
µW):
P
D
= C
PD
×
V
CC2
×
f
i
+
∑
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz.
f
o
= output frequency in MHz.
C
L
= output load capacitance in pF.
V
CC
= supply voltage in V.
∑
(C
L
×
V
CC2
×
f
o
) = sum of outputs.
2. Applies to the phase comparator section only (VCO disabled). For power dissipation of the VCO and demodulator
sections see Figs 22, 23 and 24.
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”.
APPLICATIONS
•
FM modulation and demodulation
•
Frequency synthesis and multiplication
•
Frequency discrimination
•
Tone decoding
•
Data synchronization and conditioning
•
Voltage-to-frequency conversion
•
Motor-speed control.
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”.
PARAMETER
VCO centre frequency
input capacitance (pin 5)
power dissipation capacitance per
package
notes 1 and 2
CONDITIONS
HC
C1 = 40 pF; R1 = 3 kΩ; V
CC
= 5 V 19
3.5
24
HCT
19
3.5
24
MHz
pF
pF
UNIT
1997 Nov 25
4
PHILIPS [ NXP SEMICONDUCTORS ]
