UPG130G NEC, UPG130G Datasheet - Page 9

• Manufacturer Part Number: UPG130G
• Description: L-BAND SPDT SWITCH
• Manufacturer: NEC

Floating the PG133G
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.
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.
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.
It is possible to use the PG133G with only a single +3 V supply by employing a technique known as “floating”.
When the PG133G is floated it is necessary to use DC blocking (C2, C3, C5) and grounding (C1, C4) capacitors.
It is not recommended to float the PG133G for wide band application.
(Floating the PG133G with +3 V/0 V supply at 2 GHz-band, BW
C1, C4 = 10 pF below :
C2, C3, C5 = 100 pF :
The distance between grounding capacitor and IC’s GND pins, grounding capacitor and ground of the
IN
Grounding capacitor
DC blocking capacitor
C3
C1
4
5
GND
C4
GND
8
1
C2
C5
V
OUT2
V
OUT1
CONT2
CONT1
50 MHz)
PIN CONNECTIONS
1. V
2. OUT2
3. GND
4. GND
5. IN
6. GND
7. OUT1
8. V
CONT2
CONT1
PG133G
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