參數(shù)資料
型號(hào)： AD8370-EVAL
廠商： Analog Devices, Inc.
元件分類： 運(yùn)動(dòng)控制電子
英文描述： LF to 750 MHz Digitally Controlled VGA
中文描述： LF到750兆赫數(shù)字控制VGA
文件頁數(shù)： 21/28頁
文件大小： 1043K
代理商： AD8370-EVAL
AD8370
EVALUATION BOARD AND SOFTWARE
The evaluation board allows quick testing of the AD8370 by
using standard 50 test equipment. The schematic is shown in
Figure 57. Transformers T1 and T2 are used to transform 50
source and load impedances to the desired input and output
reference levels. The top and bottom layers are shown in
Figure 61 and Figure 62. The ground plane was removed under
the traces between T1 and pins INHI and INLO to approximate
a 100 characteristic impedance.
Rev. 0 | Page 21 of 28
The evaluation board comes with the AD8370 control software
that allows serial gain control from most computers. The
evaluation board is connected via a cable to the parallel port of
the computer. Simply by adjusting the slider bar in the control
software, the gain code is automatically updated to the AD8370.
3
10
12
4
9
8
7
6
11
5
2
13
1
15
22
24
16
21
20
19
18
23
17
14
25
D-SUB 25 PIN MALE
AD8370
I
I
V
P
V
V
O
O
O
O
V
L
C
D
I
I
6
7
8
2
3
5
1
11
10
9
15
14
16
13
12
4
2
3
5
1
4
C8
0.1
μ
F
OUT+
OUT–
IN+
IN–
C7
0.1
μ
F
C6
1
μ
F
C5
0.1
μ
F
+V
S
GND
V
S
GND
P2
VOCM
PWUP
C2
C1
T1
1:4
T2
2:1
R2
0
R1
0
R3
0
R4
0
C4
C10 OPEN
R8 49.9
R9
OPEN
SW1
C3
1nF
1nF
1nF
1nF
C9 OPEN
L2*
L1*
R7
1k
R6
1k
R5
1k
0
TC4-1W
50
Tx LINE
50
Tx LINE
50
Tx LINE
50
Tx LINE
JTX-2-10T
*
EMI SUPPRESSION FERRITE
HZ1206E601R-00
Figure 57. AD8370 Evaluation Board Schematic
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參數(shù)描述
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