DS_S1M8837 Datasheet, PDF (3/29 Pages) Samsung semiconductor – FRACTIONAL-N RF/INTEGER-N IF DUAL PLL

FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
BLOCK DIAGRAM
S1M8836/37
OUT0
24
OUT1
23
V_DDIF
22
V_DDRF 1
V_PRF 2
CP_ORF 3
DGND 4
f_inRF 5
RF
LD
RF
Charge
Pump
RF
Phase
Detector
foLD Data Out
Multiplexer
IF
LD
IF
Phase
Detector
IF
Charge
Pump
RF Prescaler
+-
Prescaler
Control
RF
Programmable
Counter
IF Prescaler
-+
IF
Programmable
Counter
Prescaler
Control
21 V_PIF
20 CP_OIF
19 DGND
18 f_inIF
f_inRF 6
GND_RF 7
VDDRFa 8
OSCin 9
RF N-Latch
Frac-N Latch &
Σ −∆ Modulator
RF R-Latch
RF Reference
Counter
IF N-Latch
20-Bit Shift Register
IF R-Latch
IF Reference
Counter
10
foLD
11
RF_EN
12
IF_EN
2-Bit
Control
17 f_inIF
16 GND_IF
15 LE
14 DATA
13 CLOCK
3