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參數(shù)資料
| 型號(hào)： | L9705D |
| 英文描述： | DOUBLE QUAD CONTACT INTERFACE CIRCUIT |
| 中文描述： | 雙四接觸界面電路 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 1861K |
| 代理商： | L9705D |
FUNCTIONAL DESCRIPTION
The L9705 circuit monitors the status of the con-
tacts which are connected through the series ex-
ternal resistors R
IN
to the contact sense input
pins. The contacts equivalent circuit is supposed
to be as shown in fig.2 for GND connected con-
tacts (IN 1 to 4) and as shown in fig. 3 for V
BAT
connected contacts (IN 5 to 8).
Figure 1:
Typical application diagram for the L9705 circuit. The current flowing in the arrow direction is
assumed positive. The external capacitors C
IN
and C
OUT
represent the total wiring
capacitance at the corresponding pins.
Figure 2:
The contact sense input connection with the contact equivalent circuit for GND connected
contacts.
Figure 3:
The contact sense input connection with the contact equivalent circuit for V
BAT
connected
contacts.
L9705
4/8
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