|
MB15F74UL Datasheet, PDF (10/26 Pages) Fujitsu Component Limited. – Dual Serial Input PLL Frequency Synthesizer | |||
|
◁ |
MB15F74UL
⢠Prescaler Data Setting
Divide ratio
Prescaler divide ratio IF-PLL
Prescaler divide ratio RF-PLL
SW = âHâ
32/33
64/65
SW = âLâ
64/65
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, RF = âHâ
DoIF, RF
FCIF, RF = âLâ
DoIF, RF
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 = âHâ
(2) VCO polarity FC = âLâ
VCO Output
Frequency
Note : Give attention to the polarity for using active type LPF.
10
LPF Output voltage
(1)
(2)
Max
|
▷ |