S1M8821 Samsung Semiconductor, Inc., S1M8821 Datasheet - Page 20

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

S1M8821/22/23
TYPICAL APPLICATION CIRCUIT
** The role of Rin : Rin makes VCO output power go to the load rather than the PLL.
The value of Rin depends on the VCO power level.
20
Reference
Input
From
Controller
foLD
<RF VCO Module: ALPS Part No>
. CDMA : UCVA4X103A
. K-PCS : UCVW4X102A
. US-PCS : UCVA3X120A
CLOCK DATA
foLD
10
11
51
GND
12
9
1000pF
IF out
OSCin
LE
13
8
10pF
GND
GND
14
RF out
7
100pF
S1M8821/22/23
100pF
f
finRF
in
15
6
IF
10pF
100pF
100pF
f
f
in
in
16
IF
5
RF
R
R
in
in
C2
VCO
GND
R2
GND
17
VCO
4
C1
R1
C3
CPoIF
CPoRF
18
3
C4
V
V
19
100pF
P
2
P
100pF
2
1
V
18
P
Vp
V
V
INTERGER RF/IF DUAL PLL
20
DD
1
DD
0.01 F
100pF
18
2
1
100pF
0.01 F
V
DD
V
0.01 F
DD
0.01 F
0.01 F
0.01 F