NJG1505R
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SPDT SWITCH GaAs MMIC
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GENERAL DESCRIPTION
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PACKAGE OUTLINE
NJG1505R is a GaAs SPDT switch MMIC which features
high isolation and low loss and ideally suitable for switching
transmit/receiving signal of synthesizer.
This switch is operated in the wide frequency range from
1MHz to 3GHz at low voltage operation from 2.5V with very
small VSP8 package.
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FEATURES
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Single and low control voltage +2.5~+5.5V
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High isolation 47dB typ. @f=0.05~1GHz, Pin=0dBm
37dB typ. @f=1GHz~2GHz, Pin=0dBm
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Low insertion loss 0.6dB typ. @f=1GHz, Pin=0dBm
0.8dB typ. @f=2GHz, Pin=0dBm
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Low Control current 2uA typ. @f=0.05~2.5GHz, Pin=10dBm
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Package VSP8 (Mount Size: 4.0x2.9x1.2mm)
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PIN CONFIGURATION
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TRUTH TABLE
VCTR1 H L L H
VCTR2 L H L H
PC-P1 OFF ON - -
PC-P2 ON OFF - -
“H”=VCTR (H), “L”=VCTR (L)
NJG1505R
Pin Connection
1.VCTR2
2.PC
3.GND
4.VCTR1
5.P1
6.GND
7.GND
8.P2
R TYPE
(Top View)
6
7
8
1
2
3
4 5
NJG1505R
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ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
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ELECTRICAL CHARACTERISTICS 1
(TEST CIRCUIT 1: VCTR (L)=0V, VCTR (H)=2.7V, Zs=Zo=50ohm, Ta=25°C)
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ELECTRICAL CHARACTERISTICS 2
(TEST CIRCUIT 2: VCTR (L)=0V, VCTR (H)=2.7V, Zs=Zo=50ohm, Ta=25°C)
PARAMETER SYMBOL RATINGS UNITS
Input power Pin 27 dBm
Control voltage VCTR6V
Power dissipation PD320 mW
Operating temp. Topr -30~+85 °C
Storage temp. Tstg -40~+150 °C
PARAMETER SYMBOL CONDITIONSMIN TYP MAX UNITS
Control voltage (L) VCTR (L) f=0.05~2.5GHz, Pin=10dBm -0.2 00.2 V
Control voltage (H) VCTR (H) f=0.05~2.5GHz, Pin=10dBm 2.5 2.7 5.5 V
Control current ICTR f=0.05~2.5GHz, Pin=10dBm -2.0 4.0 uA
Isolation 1 ISL1 f=0.05~1GHz, Pin=0dBm 40 47 -dB
Isolation 2 ISL2 f=1GHz~2GHz, Pin=0dBm 33 37 -dB
Insertion loss 1 LOSS1 f=1GHz, Pin=0dBm -0.6 1.0 dB
Insertion loss 2 LOSS2 f=2GHz, Pin=0dBm -0.8 1.2 dB
Pin at 1dB
compression point P-1dB f=2GHz 19 22 -dBm
VSWR VSWR f=0.05~2.5GHz, ON STATE -1.5 1.8
Switching time TSW f=0.05~2.5GHz -8-ns
PARAMETER SYMBOL CONDITIONSMIN TYP MAX UNITS
Isolation 3 ISL3 f=1~100MHz, Pin=0dBm -55 -dB
Insertion loss 3 LOSS3 f=1~100MHz, Pin=0dBm -0.5 -dB
NJG1505R
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TYPICAL CHARACTERISTICS
-70
-60
-50
-40
-30
-20
-10
0
0 500 1000 1500 2000 2500 3000
Isolation:ISL (dB)
frequency (MHz)
PC-P1 Isolation
(VCTR=0V/2.7V)
-70
-60
-50
-40
-30
-20
-10
0
0 500 1000 1500 2000 2500 3000
Isolation:ISL (dB)
frequency (MHz)
PC-P2 Isolation
(VCTR=0V/2.7V)
-5
-4
-3
-2
-1
0
0 500 1000 1500 2000 2500 3000
Insertion Loss:LOSS (dB)
frequency (MHz)
PC-P1 Insertion Loss
(VCTR=0V/2.7V)
0.1-3GHz
-5
-4
-3
-2
-1
0
0 500 1000 1500 2000 2500 3000
Insertion Loss:LOSS (dB)
frequency (MHz)
PC-P2 Insertion Loss
(VCTR=0V/2.7V)
0.1-3GHz
NJG1505R
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TYPICAL CHARACTERISTICS
-100
-80
-60
-40
-20
0
20 40 60 80 100
Isolation:ISL (dB)
frequency (MHz)
PC-P1 Isolation
(VCTR=0V/2.7V)
1-100MHz
1
-2
-1.5
-1
-0.5
0
20 40 60 80 100
Insertion Loss:LOSS (dB)
frequency (MHz)
PC-P1 Insertion Loss
(VCTR=0V/2.7V)
1-100MHz
1
-100
-80
-60
-40
-20
0
20 40 60 80 100
Isolation:ISL (dB)
frequency (MHz)
PC-P2 Isolation
(VCTR=0V/2.7V)
1
1-100MHz
-2
-1.5
-1
-0.5
0
20 40 60 80 100
Insertion Loss:LOSS (dB)
frequency (MHz)
PC-P2 Insertion Loss
(V
CTR
=0V/2.7V)
1-100MHz
1
NJG1505R
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TYPICAL CHARACTERISTICS
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
-5 0 5 10 15 20 25 30
PC-P1
PC-P2
Insertion Loss:LOSS (dB)
Input Power (dBm)
Insertion Loss vs. Input Power
(VCTR=0V/2.7V,fin=2GHz)
-45
-40
-35
-30
-5 0 5 10 15 20 25 30
PC-P1
PC-P2
Isolation:ISL (dB)
Input Power (dBm)
Isolation vs. Input Power
(VCTR=0V/2.7V,fin=2GHz)
10
15
20
25
30
10 15 20 25 30
Pout
P-1
Output Power (dBm)
Input Power (dBm)
P-1(in) = 23.53 dBm
vs. Input Power
(VCTR=0V/2.7V,fin=2GHz)
(PC-P1) Output Power
10
15
20
25
30
10 15 20 25 30
Pout
P-1
Output Power (dBm)
Input Power (dBm)
P-1(in) = 23.38 dBm
vs. Input Power
(VCTR=0V/2.7V,fin=2GHz)
(PC-P2) Output Power
0
1
2
3
4
5
6
-5 0 5 10 15 20 25 30
Control Current:ICTR (uA)
Input Power (dBm)
VCTR=2.7V
VCTR=2.5V
(fin=2GHz)
(PC-P1) Control Current
0
1
2
3
4
5
6
-5 0 5 10 15 20 25 30
Control Current:ICTR
(uA)
Input Power (dBm)
VCTR=2.7V
VCTR=2.5V
vs. Input Power
(fin=2GHz)
(PC-P2) Control Current
NJG1505R
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TYPICAL CHARACTERISTICS
VCTR=2.5V
VCTR=2.7V
VCTR=3.0V
VCTR=2.5V
VCTR=2.7V
VCTR=3.0V
VCTR=2.5V
VCTR=2.7V
VCTR=3.0V
VCTR=2.5V
VCTR=2.7V
VCTR=3.0V
VCTR=2.5V
VCTR=2.7V
VCTR=3.0V
VCTR=2.5V
VCTR=2.7V
VCTR=3.0V
NJG1505R
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APPLICATION CIRCUIT: Single control signal operation by using C-MOS inverter.
[1]Please connect bypass capacitors to the supply terminals of the C-MOS inverter.
[2]In order to stabilize input impedance of inverter, please pull down using 510KΩ resister
from the input terminal of the C-MOS inverter to the ground plane.
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TEST CIRCUIT
Test circuit 1 Test circuit 2
0.5~2GHz 1~500MHz
C1~C3 56pF 0.1uF
C4, C5 10pF 1000pF
6
7
8
3
2
1P2
VCTL2 (2.7V/0V) Zo=50Ω
C1
C4
5
4
C5
VCTL1 (0V/2.7V) P1
Zo=50Ω
C2
C3
Zo=50Ω
PC
NJG1505R
510KΩ
+3.0V
7S04 NJG1505R
PC
P1
VC
Zo=50Ω
Zo=50Ω
Zo=50Ω
0.01uF
10pF
56pF
56pF
P2
2
3
4
3
5
6
VC=3V: PC-P1 ON
VC=0V: PC-P2 ON
10pF
56pF
4
7
5
8
2
1
NJG1505R
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RECOMMENDED PCB DESIGN
(TOP VIEW)
C1 C2
C4
C5
C3
VCTL2 VCTL1
P2
P1
PC
Precautions
[1] External capacitors should be connected to the input and output RF terminals (P1,
P2, PC) to block the DC current. The values of these capacitors depend on RF
frequency range. Please use a 0.01uF capacitor at 50 to 100MHz, a 0.1uF
capacitor at 100 to 500MHz, and a 56pF capacitor at 500MHz to 2GHz.
[2] Decoupling capacitors should be connected to the control terminals (VCTR1, VCTR2)
as close as possible. The values of these capacitors should be selected to 0.01uF
at 50 to 100MHz, 0.1uF at 100 to 500MHz, and 10pF at 500MHz to 2GHz. Please
take care to select these values because the capacitors make switching time
long.
[3] In order to keep good isolation characteristics, the ground terminals (3, 6, 7 pin)
should be connected to ground pattern with wider width as close as possible, and
through-hole in the ground plane should also be placed as close as possible.
[4] The isolation of PC port to P1 port is greater than the isolation of PC port to P2
port. Please consider this information to create better isolation design.
PCB SIZE=30.0x22.5mm
PCB: FR-4, t=0.5mm
STRIPLINE WIDTH=1mm
CAPACITORS: size 1005
NJG1505R
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nPACKAGE OUTLINE (VSP8)
Lead material : Copper
Lead surface finish : Solder plating
Molding material : Epoxy resin
UNIT : mm
Weight : 22mg
Cautions on using this product
This product contains Gallium-Arsenide (GaAs) which is a harmful material.
• Do NOT eat or put into mouth.
• Do NOT dispose in fire or break up this product.
• Do NOT chemically make gas or powder with this product.
• To waste this product, please obey the relating law of your country.
This product may be damaged with electric static discharge (ESD) or spike voltage. Please handle with
care to avoid these damages.
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.