njg1647hd3 New Japan Radio Co.,Ltd, njg1647hd3 Datasheet - Page 12

• Manufacturer Part Number: njg1647hd3
• Description: Spdt Switch Gaas Mmic
• Manufacturer: New Japan Radio Co.,Ltd

! APPLICATION CIRCUIT
! PARTS LIST
! TEST PCB LAYOUT
PRECAUTIONS
- 12 -
PC
[1]
[2]
[3]
The DC blocking capacitors have to be placed at RF terminal of PC, P1 and P2.
To control the influence on the RF performance, the terminal of VDD should be
connected with ground through the inductor L1 and the bypass capacitor C4.
For good RF performance, the ground terminals must be placed possibly close to ground plane
of substrate, and through holes for GND should be placed near by the pin connection.
C1
P1
GND
CTL1
1pin mark
CTL2
P2
L1
C1~C3
(TOP VIEW)
No.
C4
L1
C2
C3
VDD
C4
P2
C3
CTL1
4
5
6
Parameters
C2
GND
1000pF
82nH
56pF
GND
GND
(TOP VIEW)
GND
GND
P1
TDK (MLG0603)
Murata MFG
(GRM15)
PCB SIZE=19.4x15.0mm
PCB: FR-4, t=0.2mm
CAPACITOR: size 1005
INDUCTOR: size 0603
Strip Line Width=0.4mm(Z
! Losses of PCB
(Connector and DC blocking Capacitor
losses are included)
3
2
1
Note
Frequency
(GHz)
0.9
1.9
C1
L1
CTL2
NJG1647HD3
C4
PC-P1
0.23
0.33
Loss (dB)
V
DD
o
=2.7V
=50Ω)
PC-P2
0.21
0.30