NJG1663K44
X-SP4T SWITCH GaAs MMIC
GENERAL DESCRIPTION
The NJG1663K44 is a X (Cross) -SP4T* switch GaAs MMIC, which is
suitable for switching of balanced bandpass filters. The NJG1663K44
features very low phase error between on-state paths, low insertion loss,
low control voltage and wide frequency coverage. The
ESD protection
circuits are integrated in the IC to achieve high ESD tolerance.
The very small
and very thin QFN16-44 package is adopted.
*) X-SP4T is a paired SP4T switch controlled synchronously. The X-SP4T includes two
SP4T switches whose RF lines have crossings inside the MMIC.
PACKAGE OUTLINE
NJG1663K44
FEATURES
Low phase error
Low operation voltage
Low control voltage
Low insertion loss
High isolation
High ESD tolerance
Small and thin package
Lead and halogen-free
PIN CONFIGURATION
±5
deg @f=2.0GHz
V
DD
=+1.5~+4.5V
V
CTL(H)
=+1.3V min.
0.45dB typ. @1.0GHz,
0.55dB typ. @2.0GHz
26dB typ. @1.0GHz,
20dB typ. @2.0GHz
Integrated ESD protection circuit
QFN16-44 (Package size: 2.3mm x 2.3mm x 0.45mm typ)
(Top View)
12
11
10
9
8
13
DECODER
14
7
15
6
Pin connection
1. P2B
2. P2A
3. P1A
4. P1B
5. GND
6. PCB
7. PCA
8. GND
9. VDD
10. CTL2
11. CTL1
12. GND
13. P4A
14. P4B
15. P3A
16. P3B
16
5
1
2
3
4
TRUTH TABLE
“H”=V
CTL(H),
“L”=V
CTL(L)
ON PATH
PCA-P1A, PCB-P1B
PCA-P2A, PCB-P2B
PCA-P3A, PCB-P3B
PCA-P4A, PCB-P4B
CTL1
H
L
L
H
CTL2
L
L
H
H
Note: The Information on this datasheet will be subject to change without notice.
-1-
Ver. 2009-11-10
NJG1663K44
TERMINAL INFORMATION
No.
SYMBOL
DESCRIPTION
The 2nd RF port of the 2nd switch. This port is connected with PCB port. PCA
port is connected with P2A port at the same time. An external capacitor is
required to block DC voltage.
The 2nd RF port of the 1st switch. This port is connected with PCA port. PCB
port is connected with P2B port at the same time. An external capacitor is
required to block DC voltage.
The 1st RF port of the 1st switch. This port is connected with PCA port. PCB
port is connected with P1B port at the same time. An external capacitor is
required to block DC voltage.
The 1st RF port of the 2nd switch. This port is connected with PCB port. PCA
port is connected with P1A port at the same time. An external capacitor is
required to block DC voltage.
Ground terminal. Please connect this terminal with ground plane as close as
possible for excellent RF performance.
Common RF port of the 2nd switch. This port is connected with either of P1B,
P2B, P3B, and P4B port. An external capacitor is required to block DC
voltage.
Common RF port of the 1st switch. This port is connected with either of P1A,
P2A, P3A, and P4A port. An external capacitor is required to block DC
voltage.
Ground terminal. Please connect this terminal with ground plane as close as
possible for excellent RF performance.
Positive voltage supply terminal. The positive voltage (+1.5~+4.5V) has to be
supplied. Please connect a bypass capacitor with GND terminal for excellent
RF performance.
Control signal input terminal.
or Low-Level (0~+0.4V).
Control signal input terminal.
or Low-Level (0~+0.4V).
This terminal is set to High-Level (+1.3V~4.5V)
1
P2B
2
P2A
3
P1A
4
P1B
5
GND
6
PCB
7
PCA
8
GND
9
VDD
10
CTL2
11
CTL1
This terminal is set to High-Level (+1.3V~4.5V)
12
GND
Ground terminal. Please connect this terminal with ground plane as close as
possible for excellent RF performance.
The 4th RF port of the 1st switch. This port is connected with PCA port. PCB
port is connected with P4B port at the same time. An external capacitor is
required to block DC voltage.
The 4th RF port of the 2nd switch. This port is connected with PCB port. PCA
port is connected with P4A port at the same time. An external capacitor is
required to block DC voltage.
The 3rd RF port of the 1st switch. This port is connected with PCA port. PCB
port is connected with P3B port at the same time. An external capacitor is
required to block DC voltage.
The 3rd RF port of the 2nd switch. This port is connected with PCB port. PCA
port is connected with P3A port at the same time. An external capacitor is
required to block DC voltage.
13
P4A
14
P4B
15
P3A
16
P3B
-4-
NJG1663K44
ELECTRICAL CHARACTERISTICS
(General conditions: T
a
=+25°C, Z
s
=Z
l
=50Ω, losses of external circuit are excluded, with application circuit)
Insertion Loss vs. Frequency
(V =2.7V, CTL1=1.8V, CTL2=0V)
0.0
DD
Insertion Loss vs. Frequency
(V =2.7V, CTL1=0V, CTL2=0V)
0.0
DD
-0.5
-0.5
Insertion Loss (dB)
-1.0
Insertion Loss (dB)
-1.0
-1.5
-1.5
-2.0
PCA-P1A
PCB-P1B
-3.0
0.0
-2.0
PCA-P2A
PCB-P2B
-2.5
-2.5
0.5
1.0
1.5
2.0
2.5
3.0
-3.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
(V =2.7V, CTL1=0V, CTL2=1.8V)
0.0
DD
Insertion Loss vs. Frequency
(V =2.7V, CTL1=1.8V, CTL2=1.8V)
0.0
DD
-0.5
-0.5
Insertion Loss (dB)
Insertion Loss (dB)
-1.0
-1.0
-1.5
-1.5
-2.0
PCA-P3A
PCB-P3B
-2.0
PCA-P4A
-2.5
PCB-P4B
-2.5
-3.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
-3.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
Frequency (GHz)
VSWR vs. Frequency
(V =2.7V, CTL1=1.8V, CTL2=0V)
3.0
DD
VSWR vs. Frequency
(V =2.7V, CTL1=0V, CTL2=0V)
3.0
DD
2.5
PCA Port
P1A Port
PCB Port
P1B Port
2.5
PCA Port
P2A Port
PCB Port
P2B Port
VSWR
VSWR
2.0
2.0
1.5
1.5
1.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
1.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
Frequency (GHz)
-5-
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