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Application Circuit Diagram
5-3
Application Circuit Diagram
5.1.2 External Active Loop Filter Using OPA341
Figure 5−2. CDCM7005 With a External Active Loop Filter Using OPA341
SPI
PECL_OUT_B
PECL_OUT
V_CTRL
VC(X)O
CP_OUT
CTRL_LE
CTRL_DATA
CTRL_CLK
CDCM7005
PLL_LOCK
STATUS_VC(X)O
STATUS_REF
Vcc
Low-Pass Filter
Vcc
InP
InN
Out
OPA341
R
82 Ω
R
82 Ω
R
150 Ω
R
150 Ω
10 nF
10 nF
C1
100 nF
R1
180 Ω
C1
100 nF
R6
10 kΩ
R5
10 kΩ
C2
10 µF
R3
10 kΩ
C3
100 nF
130 Ω
V
CC
130 Ω
V
CC
PRI_REF
SEC_REF
R2
4.7 kΩ
YnB
YnA
VC(X)O_IN
VC(X)O_IN
491.52 MHz