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參數(shù)資料
| 型號： | SDM863B |
| 英文描述： | 16 Single Ended/8 Differential Input 12-BIT DATA ACQUISITION SYSTEMS |
| 中文描述： | 16單端/ 8差分輸入12位數(shù)據(jù)采集系統(tǒng) |
| 文件頁數(shù)： | 13/27頁 |
| 文件大?。?/td> | 256K |
| 代理商： | SDM863B |
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SDM862/863/872/873
13
power supplies to the two sections were directly connected.
This feature is important where low-level signals are in use
or high input signal noise immunity is desired.
The output section has three grounds:
Pin 25 Analog Common, A/D Converter
Pin 34 S/H Amp Digital Input Reference
Pin 19 Digital Common, A/D Converter
The input section has one ground:
Pin 53 Common for digital MUX-inputs and power
supply decoupling.
All grounds have to be interconnected externally to the
SDM, and it is recommended that all grounds are connected
via one track to a single point as close as possible to the
SDM. To check that the grounding structure is correct, the
ground tracking should be sketched and a grounding “tree”
should result whereby all grounds route to a central point.
In general, layout should be such that analog and digital
tracks are separated as much as possible with coupling
between analog and digital lines minimized by careful lay-
out. For instance, if the lines must cross they should do so
at right angles to each other. Parallel analog and digital lines
should be separated from each other by a pattern connected
to common.
S
D
–
+
O
S
A
D
+
–
+
66
53
4
3
2
34
25
19
27
20
5
100μH
100μH
+5V
–15V
+15V
Signal-Ref
NOTE: (1) 10μF tantalum in parallel with 100nF ceramic.
(1)
(1)
(1)
(1)
(1)
FIGURE 15. Recommended Decoupling of Power Supplies.
–V
0
+V
0
+5V
–V
0
+V
4
53
3
20
27
25
19
5
5V
+5V
1/2 SDM
ISO100
4 Opto-Couplers
MUX-Address
MUX-Address
+5V
INA
1/2 SDM
PWR305
1
2
39
100μH
100μH
100μH
100μH
100μH
FIGURE 16. Galvanic Isolation Between Analog and Digital Signals.
相關PDF資料 |
PDF描述 |
|---|---|
| SDM863J | 16 Single Ended/8 Differential Input 12-BIT DATA ACQUISITION SYSTEMS |
| SDM863K | 16 Single Ended/8 Differential Input 12-BIT DATA ACQUISITION SYSTEMS |
| SDM872R | 16 Single Ended/8 Differential Input 12-BIT DATA ACQUISITION SYSTEMS |
| SDM872S | 16 Single Ended/8 Differential Input 12-BIT DATA ACQUISITION SYSTEMS |
| SDM873 | 16 Single Ended/8 Differential Input 12-BIT DATA ACQUISITION SYSTEMS |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SDM863J | 制造商:BB 制造商全稱:BB 功能描述:16 Single Ended/8 Differential Input 12-BIT DATA ACQUISITION SYSTEMS |
| SDM863K | 制造商:BB 制造商全稱:BB 功能描述:16 Single Ended/8 Differential Input 12-BIT DATA ACQUISITION SYSTEMS |
| SDM863R | 制造商:BB 制造商全稱:BB 功能描述:16 Single Ended/8 Differential Input 12-BIT DATA ACQUISITION SYSTEMS |
| SDM863S | 制造商:BB 制造商全稱:BB 功能描述:16 Single Ended/8 Differential Input 12-BIT DATA ACQUISITION SYSTEMS |
| SDM872 | 制造商:BB 制造商全稱:BB 功能描述:16 Single Ended/8 Differential Input 12-BIT DATA ACQUISITION SYSTEMS |
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