ADF4110/ADF4111/ADF4112/ADF4113
V
P
POWER-DOWN CONTROL
V
S
DD
RF
OUT
ADG701
IN
V
DD
D
GND
100pF
7
15
16 10
18Ω
100pF
V
18Ω
CC
AV
DV
V CE
DD P
DD
LOOP
FILTER
2
1
CP
FREF
8
IN
VCO
18Ω
REF
IN
R
SET
GND
4.7kΩ
ADF4110
ADF4111
ADF4112
ADF4113
100pF
RF
A
B
6
5
IN
51Ω
RF
IN
3
4
9
100pF
DECOUPLING CAPACITORS AND INTERFACE SIGNALS HAVE
BEEN OMITTED FROM THE DIAGRAM TO INCREASE CLARITY.
Figure 35. Local Oscillator Shutdown Circuit
RF
OUT
20V
12V
CC
V
7
V
DD
P
3k
Ω
100pF
1k
Ω
18
Ω
V
100pF
18
Ω
15
DV
16
OUT
AD820
V_TUNE
3.3kΩ
19nF
680Ω
AV
V
DD
DD
P
2
1
18Ω
1000pF
1000pF
M3500-2235
GND
CP
8
REF
FREF
IN
IN
2.8nF
4.7k
130pF
R
51Ω
SET
Ω
ADF4113
CE
LOCK
DETECT
CLK MUXOUT
DATA
LE
14
100pF
RF
RF
A
B
IN
6
5
IN
51
Ω
3
4
9
100pF
DECOUPLING CAPACITORS ON AV , DV , V OF THE ADF4113
DD DD
P
AND ON VCC OF THE M3500-2250 HAVE BEEN OMITTED FROM
THE DIAGRAM TO AID CLARITY.
Figure 36. Wideband Phase-Locked Loop
Rev. C | Page 24 of 28
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