njg1509f New Japan Radio Co.,Ltd, njg1509f Datasheet - Page 12

• Manufacturer Part Number: njg1509f
• Description: Spdt Switch Gaas Mmic
• Manufacturer: New Japan Radio Co.,Ltd

NJG1509F
nTEST CIRCUIT
nRECOMMENDED PCB DESIGN
- 12 -
Precaution
[1]External capacitors should be connected to the input and output RF terminals (P1,
[2]Decoupling capacitors should be connected to the control terminals (V
[3]In order to keep good isolation characteristics, the grand terminal (5pin) should be
P2, PC) to block the DC current. The above example is a circuit at 900MHz. Please
select the capacitors value suitable for actual frequency from 10pF to 1000pF.
as close as possible. The values of these capacitors should be selected from 5pF
to 100pF range. Please consider that these values are very effective to switching
time (Larger capacitor gives longer switching time).
connected to the ground pattern with wide width as close as possible, and
though-hole in the ground plane should also be placed as close as possible.
P2
P2
P1
C2
V
CTR2
C4
Zo=50
Zo=50
(TOP VIEW)
PC
C3
C2
C1
R1
5
4
6
C5
V
NJG1509F
CTR1
C1
P1
2
3
1
R1
C5
C4
C3
V
V
Zo=50
CTR2
PCB SIZE=19.4x14.0mm
PCB: FR-4, t=0.5mm
CAPACITOR: size 1005
STRIP LINE WIDTH=1mm
C1~C3: 56pF
C4, C5: 10pF
R1: 510K
CTR1
(2.7V/0V)
(0V/2.7V)
PC
CTR1
, V
CTR2
)