AD9851 Analog Devices, AD9851 Datasheet - Page 17

• Manufacturer Part Number: AD9851
• Description: CMOS 180 MHz DDS/DAC Synthesizer
• Manufacturer: Analog Devices

REV. C
RESET
10mA
C36CPR2
J1
BNC
BNC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
3.9k
FFQUD
WWCLK
CHECK
STROBE
RRSET
R1
J8
J9
BANANA
WCLK
CLKIN
FQUD
JACKS
GND
GND
RRESET
RRESET
WWCLK
D3
D2
D1
D0
FFQUD
+V
+V
10
11
12
13
14
1
2
3
4
5
6
7
8
9
9
8
7
6
5
4
3
2
J2
J3
J4
STROBE
74HCT574
D3
D2
D1
D0
PGND
PVCC
W CLK
FQ UD
REFCLOCK
AGND
AVDD
R
VOUTN
VOUTP
8D
7D
6D
5D
4D
3D
2D
1D
NC = NO CONNECT
CK
SET
9
8
7
6
5
4
3
2
11
U2
STROBE
74HCT574
+V
+5V
GND
8D
7D
6D
5D
4D
3D
2D
1D
AD9851
CK
OE
U1
8Q
7Q
6Q
5Q
4Q
3Q
2Q
1Q
11
U3
1
OE
RESET
DACBL
12
13
14
15
16
17
18
19
IOUTB
AGND
8Q
7Q
6Q
5Q
4Q
3Q
2Q
1Q
DGND
DVDD
AVDD
IOUT
VINP
VINN
1
D0
D1
D2
D3
D4
D5
D6
D7
Figure 24. CGPCB Electrical Schematic
D4
D5
D6
D7
12
13
14
15
16
17
18
19
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RESET
WCLK
FQUD
CHECK
+V
D4
D5
D6
D7
GND
RESET
GND
+V
+V
NC
C6
10 F
+5V
+5V
EVALUATION BOARD
CLOCK GENERATOR
C1
470pF
RRESET
E6
C7
10 F
AD9851/CGPCB
R12
(SSOP PACKAGE)
R9
2.2k
–17–
J7
E5
R4
100k
R5
100k
R8
100
BNC
E1
C2
0.1 F
FFQUD
(OPTIONAL)
E2
REMOVE WHEN
R10
2.2k
XTAL
E4
R6
200
OSC
USING Y1
TO BYPASS ON BOARD FILTER
C3
0.1 F
1. REMOVE E6 TO E5 JUMPER
2. INSTALL APPROPRIATE R12 FOR IOUT TERMINATION
WWCLK
E3
70MHz ELLIPTICAL LOW PASS FILTER
CLKIN
J6
R11
2.2k
C11
22pF
Y1
GND
+5V
V
470nH
CC
C12
C4
0.1 F
1pF
L1
7
14
7TH ORDER 200
STROBE
OUT
R2
50
+V
R3
2.2k
8
C13
33pF
C5
0.1 F
390nH
5.6pF
C14
L2
J5
Z
H1
#6
MOUNTING HOLES
C15
22pF
C8
0.1 F
390nH
4.7pF
C16
L3
H2
#6
C9
0.1 F
H3
#6
C17
22pF
H4
#6
+5V
AD9851
R7
200
C10
0.1 F