參數(shù)資料
型號(hào): AD9832
廠商: Analog Devices, Inc.
元件分類: XO, clock
英文描述: CMOS Complete DDS
中文描述: 完整的CMOS的直接數(shù)字合成器
封裝: TSSOP-16
文件頁數(shù): 15/16頁
文件大小: 146K
代理商: AD9832
–15–
AD9832
REV. A
Using the AD9832 Evaluation Board
The AD9832 Evaluation kit is a test system designed to simplify
the evaluation of the AD9832. Provisions to control the AD9832
from the printer port of an IBM-compatible PC are included,
along with the necessary software. An application note is also
available with the evaluation board and gives information on
operating the evaluation board.
Prototyping Area
An area is available on the evaluation board for the user to add
additional circuits to the evaluation test set. Users may want to
build custom analog filters for the output or add buffers and
operational amplifiers to be used in the final application.
C1
0.1
m
F
DVDD
AVDD
C2
0.1
m
F
4
15
AVDD
DVDD
16
2
3
1
14
COMP
REFIN
REFOUT
FSADJUST
IOUT
AVDD
C3
10nF
REFIN
C4
10nF
LK4
R5
3.9k
IOUT
C8
10
m
F
C7
0.1
m
F
DVDD
J2
J3
C9
0.1
m
F
C10
10
m
F
AVDD
R6
300
DGND
5
AGND
13
11
12
10
6
9
8
7
MCLK
FSELECT
PSEL0
PSEL1
FSYNC
SDATA
SCLK
16
14
9
20
11
6
4
DVDD
C6
0.1
m
F
1 10 19
U2
J1
SCLK
SDATA
FSYNC
R3
10k
R1
10k
R2
10k
PSEL1
PSEL0
FSELECT
LK1
LK2
LK3
SW
DVDD
MCLK
R4
50
DGND
DVDD
U3
OUT
DVDD
C5
0.1
m
F
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
AD9832
XTAL1
Figure 31. AD9832 Evaluation Board Layout
XO vs. External Clock
The AD9832 can operate with master clocks up to 25 MHz. A
25 MHz oscillator is included on the evaluation board. How-
ever, this oscillator can be removed and, if required, an external
CMOS clock connected to the part.
Power Supply
Power to the AD9832 Evaluation Board must be provided ex-
ternally through the pin connections. The power leads should be
twisted to reduce ground loops.
Integrated Circuits
XTAL1
U1
U2
Capacitors
C1, C2
C3, C4
C5, C6, C7, C9
C8, C10
Resistors
R1–R3
R4
R5
R6
OSC XTAL 25 MHz
AD9832 (16-Pin TSSOP)
74HCT244 Buffer
0.1
μ
F Ceramic Chip Capacitor
10 nF Ceramic Capacitor
0.1
μ
F Ceramic Capacitor
10
μ
F Tantalum Capacitor
10 k
Resistor
50
Resistor
3.9 k
Resistor
300
Resistor
Links
LK1–LK3
LK4
Switch
SW
Three-Pin Link
Two-Pin Link
End Stackable Switch (SDC Double
Throw)
Sockets
MCLK, PSEL0,
PSEL1, FSELECT,
IOUT, REFIN
Connectors
J1
J2, J3
Subminiature BNC Connector
36-Pin Edge Connector
PCB Mounting Terminal Block
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