e421371 Datasheet, PDF (4/29 Pages) Fuji Electric – Fractional-N PLL Frequency Synthesizer

MB15F83UL
s BLOCK DIAGRAM
VCCIF GNDIF
VpIF
(4) 6
5 (3) (6) 8
PSIF 7
(5)
(1)
finIF 3
XfinIF 4
(2)
OSCIN 1
(19)
(15)
finRF 17
XfinRF 16
(14)
PSRF 13
(11)
Power
saving
IF-PLL
Prescaler
(IF-PLL)
8/9, 16/17
OR
MD2
Prescaler
(RF-PLL)
16/17
Power
saving
RF-PLL
4-bit latch
11-bit latch
Binary 4-bit ^{Binary 11-bit}
swallow counter ^programmable
(IF-PLL)
counter (IF-PLL)
14-bit latch
Binary 14-bit pro-
grammable ref.
counter (IF-PLL)
6-bit latch
fpIF
Phase
comp.
(IF-PLL)
Lock
Det.
(IF-PLL)
LDIF
Binary 7-bit pro-
grammable ref.
counter (RF-PLL)
7-bit latch
5-bit latch
MD1
Fractional
Counter
13
Binary 4-bit
Binary 10-bit
swallow counter ^programmable
(RF-PLL)
counter (RF-PLL)
4-bit latch
10-bit latch
F FFF
1 234
4-bit latch
frRF
frRF
Selector
fpRF
fpRF
Lock
Det.
(RF-PLL)
Phase
comp.
(RF-PLL)
Charge
pump
(IF-PLL)
9 DoIF
(7)
Slector
LDIF
LDRF
frIF
frRF
fpIF
fpRF
10 LD/fout
(8)
OR
Charge
pump
(RF-PLL)
11 DoRF
(9)
LE 18
(16)
Data 19
(17)
Clock 20
(18)
Schmitt
circuit
Schmitt
circuit
Schmitt
circuit
Latch selector
CCC
NNN
123
23-bit shift
register
O : TSSOP 20
( ) : BCC 20
SC1
SC2
SC
(RF-PLL)
2 (20)
GND
(12) 14
15 (13) 12 (10)
VccRF GNDRF VpRF
4