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參數(shù)資料
| 型號： | μPG133G |
| 廠商： | NEC Corp. |
| 英文描述： | L-Band SPDT Switch(長波段單刀雙擲開關(guān)) |
| 中文描述： | L波段單刀雙擲開關(guān)（長波段單刀雙擲開關(guān)） |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 76K |
| 代理商： | ΜPG133G |
μ
PG133G
9
Floating the
μ
PG133G
It is possible to use the
μ
PG133G with only a single +3 V supply by employing a technique known as “floating”.
When the IC is floated using a +3 V supply, the voltage levels used to control the switch are elevated above ground
by +3 V.
When the
μ
PG133G is floated it is necessary to use DC blocking (C2, C3, C5) and grounding (C1, C4) capacitors.
This enables the IC to isolated so that +3 V can be applied to RF line. The value for DC blocking capacitors should
be chosen to accommodate the frequency of operation. Grounding capacitors are required to float the IC above
ground. The value for grounding capacitor should be chosen to accommodate the frequency of operation.
It is not recommended to float the
μ
PG133G for wide band application.
(Floating the
μ
PG133G with +3 V/0 V supply at 2 GHz-band, BW
≤
50 MHz)
C1
C2
PIN CONNECTIONS
1. V
CONT2
2. OUT2
3. GND
4. GND
5. IN
6. GND
7. OUT1
8. V
CONT1
1
4
8
5
V
CONT2
V
CONT1
OUT2
GND
C5
OUT1
IN
C4
C3
GND
C1, C4 = 10 pF below :
C2, C3, C5 = 100 pF :
Grounding capacitor
DC blocking capacitor
The distance between grounding capacitor and IC’s GND pins, grounding capacitor and ground of the
substrate should be as shorter as possible to avoid the parasitic parameters. IC’s GND pin, No. 3, No. 4 and No.
6 are connected inside of the IC.
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