S1M8837 Samsung Semiconductor, Inc., S1M8837 Datasheet - Page 27

• Manufacturer Part Number: S1M8837
• Description: Fractional-n Rf/integer-n If Dual Pll
• Manufacturer: Samsung Semiconductor, Inc.

FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
TYPICAL APPLICATION CIRCUIT
From
Controller
Reference
The role of Rin : Rin makes a large portion of VCO output power go to the load rather than the PLL. The value
of Rin depends on the VCO power level
Input
V
foLD
<RF VCO Module : ALPS Part No>
. CDMA : UCVA4X103A
. K-PCS : UCVW4X102A
. US-PCS : UCVA3X120A
DD
22
V
51
DD
1000pF
100pF 0.01 F
10
11
12
CLCOK
OSC
foLD
RF_EN
IF_EN
13
9
0.1 F
in
V
DATA
DD
14
8
RFa
RF Out
GND
LE
15
7
RF
100pF
IF Out
GND
f
10pF
in
16
6
RF
1000pF
IF
VCO
f
f
56pF
in
in
17
5
RF
IF
R
10pF
56pF
in
DGND
VCO
f
C3
in
18
4
IF
R3
R
C13
in
C2
CP
DGND
19
3
O
R1
C1
RF
R13
C12
CP
V
P
20
2
RF
O
IF
R11
C11
V
100pF 0.01 F
P
V
OUT0
OUT1
V
V
DD
21
P
1
DD
100pF
RF
IF
IF
22
V
24
23
22
V
DD
100pF 0.01 F
P
100pF
0.1 F
0.1 F
0.01 F
22
S1M8836/37
V
DD
0.01 F
27