UPG138GV-E1 NEC [NEC], UPG138GV-E1 Datasheet - Page 6

• Manufacturer Part Number: UPG138GV-E1
• Description: L-BAND SPDT SWITCH
• Manufacturer: NEC [NEC]

Floating the P P P P PG138GV
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.
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.
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.
6
It is possible to use the P PG138GV with only a single +3 V supply by employing a technique known as “floating”.
When the P PG138GV is floated it is necessary to use DC blocking (C2, C3, C5) and grounding (C1, C4)
It is not recommended to float the P PG138GV for wide band application.
(Floating the P PG138GV with +3 V/0 V supply at 2 GHz-band, BW d 50 MHz)
The distance between grounding capacitor and IC’s GND pins, grounding capacitor and ground of the substrate
C1, C4 = 10 pF below
C2, C3, C5 = 100 pF
IN
: Grounding capacitor
: DC blocking capacitor
C3
C1
4
5
GND
C4
GND
1
8
C2
C5
V
V
OUT2
OUT1
CONT2
CONT1
PIN CONNECTIONS
1. V
2. OUT2
3. GND
4. GND
5. IN
6. GND
7. OUT1
8. V
CONT2
CONT1