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AD9833 Datasheet(PDF) 17 Page - Analog Devices

Part # AD9833
Description  2.5 V to 5.5 V, 25 MHz Low Power CMOS Complete DDS
PDF  18 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9833 Datasheet(HTML) 17 Page - Analog Devices

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AD9833
– 17–
REV PrG
PRELIMINARY TECHNICAL DATA
final application.
XO vs. External Clock
The AD9833 can operate with master clocks up to 25
MHz. A 25 MHz oscillator is included on the evaluation
board. However, this oscillator can be removed and, if
required, an external CMOS clock connected to the part.
Figure 13. AD9833 Evaluation Board Layout
Integrated Circuits
U 1
AD9833BRU
U 2
74HCT244
U 3
OSC XTAL 25 MHz
Capacitors
C1 C2
100nF Ceramic Capacitor 0805
C5 C6 C7 C9
100nF Ceramic Capacitor
C 3
10nF ceramic Capacitor
C8 C10 C11
10uF Tantalum Capacitor
C 4
Option for extra decoupling capacitor
Resistor
R1
51
Ω Resistor
Links
Lk1 Lk2
2 pin sil header
Sockets
MCLK VOUT
Sub Minature BNC Connector
Connectors
J 1
36-Pin Edge Connector
J2, J3
PCB Mounting Terminal Block
Power Supply
Power to the AD9833 Evaluation Board must be provided
externally through pin connections. The power leads
should be twisted to reduce ground loops.
C8
10mF
C7
0.1m F
DVDD
J2
J3
C9
0.1m F
C10
10mF
VDD
C2
0.1m F
VDD
2
VDD
1
10
COMP
VOUT
VDD
C3
0.01m F
VOUT
DGND
AGND
4
9
5
8
6
7
MCLK
FSYNC
SDATA
SCLK
18
16
14
1
6
4
2
DVDD
C6
0.1m F
U2
J1
SCLK
SDATA
FSYNC
MCLK
50R
DGND
DVDD
OUT
DVDD
C5
0.1m F
U3
SCLK
SDATA
FSYNC
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
U1
AD9833
C4
R1
LK2
CAP
LK1
C11
10m F
C1
0.1m F
3
DVDD
C6
0.1mF



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