MB15F73UV Datasheet, PDF (10/25 Pages) Fujitsu Component Limited. – Dual Serial Input PLL Frequency Synthesizer

MB15F73UV
• Prescaler Data Setting
Divide ratio
Prescaler divide ratio IF-PLL
Prescaler divide ratio RF-PLL
SW = “1”
8/9
64/65
SW = “0”
16/17
128/129
• Charge Pump Current Setting
Current value
CS
±6.0 mA
1
±1.5 mA
0
• LD/fout output Selectable Bit Setting
LD/fout pin state
LDS
T1
T2
0
0
0
LD output
0
1
0
0
1
1
frIF
1
0
0
fout
frRF
1
1
0
output
fpIF
1
0
1
fpRF
1
1
1
• Phase Comparator Phase Switching Data Setting
Phase comparator input
FCIF, FCRF = “1”
DoIF, DoRF
FCIF, FCRF = “0”
DoIF, DoRF
fr > fp
H
L
fr < fp
L
H
fr = fp
Z
Z
Z : High-impedance
Depending upon the VCO and LPF polarity, FC bit should be set.
High
(1) VCO polarity FC = “1”
(2) VCO polarity FC = “0”
VCO Output
Frequency
Note : Give attention to the polarity for using active type LPF.
10
LPF Output voltage
(1)
(2)
Max