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參數資料
| 型號： | UPC659A |
| 廠商： | NEC Corp. |
| 英文描述： | 8-BIT A/D CONVERTER FOR VIDEO PROCESSING WITH REFERENCE GENERATOR AND CLAMP CIRCUIT |
| 中文描述： | 8位A / D的視頻與參考發(fā)生器和鉗位電路處理轉爐 |
| 文件頁數： | 10/16頁 |
| 文件大小： | 123K |
| 代理商： | UPC659A |
10
μ
PC659A
Output Code for Analog Input
Output digital code
Analog input
OVER
DB
1
(MSB)
DB
2
DB
3
DB
4
DB
5
DB
6
DB
7
DB
8
(LSB)
V
RB
to 1/2 LSB
0
0
0
0
0
0
0
0
0
1/2 LSB to (1 + 1/2) LSB
0
0
0
0
0
0
0
0
1
to
to
to
to
to
to
to
to
to
to
(254 + 1/2) LSB to (255 + 1/2) LSB
0
1
1
1
1
1
1
1
1
(255 + 1/2) LSB to V
RT
1
1
1
1
1
1
1
1
1
V
RT
to AV
CC
1
1
1
1
1
1
1
1
1
Remark
LSB ··
RT
– V
RB
··
RB
= 2.3 V TYP., V
RT
= 3.3 V TYP.
256
APPLICATION CIRCUIT EXAMPLE
AGND
AGND
AGND AGND
Clamp pulse
22
100 F
+
51
4.7 k
15 k
1 k
10 F
+
+
+
+
2.2 F
0.01
F
AGND
2 k
AGND
DGND
2.2 F
15
k
VR
1
20 k
0.01 F
47 F
2.2 F
AV
CC
(+5 V)
0.01 F
47 F
OVER
DB
1
to DB
8
4f
sc
Clock input
DGND
DV
CC
(+5 V)
DGND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
V
RT
NC
AV
CC
V
IN
AGND
P
CL
V
CL
AV
CC
AGND
V
RB
AV
CC
AGND
CLK
OVER
DB
1
DB
2
DB
3
DGND
DV
CC
DB
4
DB
5
DB
6
DB
7
DB
8
Remarks 1.
VR
1
: Clamp voltage adjustment
2.
Must be thick line wiring for the power supply lines. And reduce the resistance and reactance
ingredient.
AV
CC
and DV
CC
must be connected at one point.
AGND and DGND must be connected at one point.
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