S1M8821 Samsung Semiconductor, Inc., S1M8821 Datasheet - Page 3

• Manufacturer Part Number: S1M8821
• Description: Interger Rf/if Dual Pll Frequency Synthesizer
• Manufacturer: Samsung Semiconductor, Inc.

INTERGER RF/IF DUAL PLL
BLOCK DIAGRAM
NOTE: The pin numbers above are for 20-TSSOP package.
OSCin
CPoRF
V
GND
f
f
GND
GND
foLD
in
in
V
DD
RF
RF
P
1
1
10
1
2
3
4
5
6
7
8
9
+ –
Charge
Pump
RF
Prescaler
Control
RF Prescaler
Detector
RF Reference
Phase
RF N-Latch
RF R-Latch
RF
Counter
RF
LD
Programmable
Counter
RF
Multiplexer
Data Out
foLD
20-bit Shift Register
Programmable
IF Reference
IF R-Latch
Counter
IF N-Latch
Counter
IF
Detector
IF Prescaler
Phase
IF
IF
LD
Prescaler
Control
Charge
Control
Pump
2-bit
IF
–
+
S1M8821/22/23
20
19
18
17
16
15
14
13
12
11
V
V
CPoIF
GND
f
f
GND
LE
DATA
CLOCK
in
in
DD
P
IF
IF
2
2
3