MB1504
MB1504H
MB1504L
Lock up Time Measurement
f
IN
D
O
MB1504
LPF
VCO
Controller
(Divide ratio
setting)
Oscilloscope (10MΩ, 10pF)
12.8MHz
LPF Circuit
1kΩ
4kΩ
1kΩ
10µF
4kΩ
to VCO
0.1µF
1µF
V
f
f
=3V, V =8V
P
=Low unlock condition
=High unlock condition
CC
VCO
VCO
Step to Lock condition (533MHz)
Step to Lock condition (518MHz)
Phase Characteristics Measurement
V
CC
V
P
10kΩ
10kΩ
OSC
D
fr
IN
IN
O
P
P
G
G
Oscilloscope
(10MΩ, 10pF)
MB1504
f
fp
V
=3V, V =3V
P
∆Cf=Cfr–fp
2
Energy (En)=V t
15