參數(shù)資料
型號: AD9483KS-100
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: Triple 8-Bit, 140 MSPS A/D Converter
中文描述: 3-CH 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, PQFP100
封裝: HEAT SINK, PLASTIC, MQFP-100
文件頁數(shù): 22/26頁
文件大?。?/td> 319K
代理商: AD9483KS-100
AD9483
–22–
REV. A
PCB LAYOUT
The PCB is designed on a four layer (1 oz. Cu) board. Compo-
nents and routing are on the top layer with a ground flood for
additional isolation. Test and ground points were judiciously
placed to facilitate high speed probing. Each channel has a
separate 25-pin connector for it’s digital outputs. A common
ground plane exists on the second layer.
The third layer has the 3 split power planes:
1. 5 V analog for the ADC and preamps,
2. 3.3 V (or 5 V) ADC output supply, and
3. A separate 3.3 V supply for support logic. The fourth layer
contains the –5 V plane for the preamps and additional compo-
nents and routing. There is additional space for two extra com-
ponents on top of the board to allow for modification.
Table IV. 25-Pin Connector Pinout
Pin No.
Pin Name
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
DR (Data Ready)
GND
A0
A1
A2
A3
A4
A5
A6
A7
GND
NC (No Connect)
NC (No Connect)
DRB (Data Ready Bar)
GND
B0
B1
B2
B3
B4
B5
B6
B7
GND
NC (No Connect)
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