NJRC NJG1512V

NJG1512V
SPDT SWITCH GaAs MMIC
nGENERAL DESCRIPTION
NJG1512V is a GaAs SPDT switch IC featuring high
isolation and low insertion loss.
This switch allows low operating voltage from 2.5V at
the wide frequency range from 1MHz to 3GHz.
NJG1512V is suitable to switch the synthesizer
signals between transmit and receiving circuit.
A very small SSOP package is adopted.
nFEATURES
lSingle, low voltage control
lHigh isolation
lLow insertion loss
lLow current consumption
lPackage
nPACKAGE OUTLINE
NJG1512V
+2.5~+5.5V
46dB typ. @f=0.05~2GHz, Pin=0dBm
0.8dB typ. @f=2GHz, Pin=0dBm
2uA typ. @f=0.05~2.5GHz, Pin=10dBm
SSOP14 (Mount Size: 6.4x5.0x1.25mm)
nPIN CONFIGURATION
V Type
(Top View)
1
14
2
13
3
12
4
11
5
10
6
9
7
8
Pin Connection
1. VCTR2
2. GND
3. GND
4. PC
5. GND
6. GND
7. VCTR1
8. P1
9. GND
10. GND
11. GND
12. GND
13. GND
14. P2
nTRUTH TABLE
“H”=VCTR (H), “L”=VCTR (L)
VCTR1
H
L
L
H
VCTR2
L
H
L
H
PC-P1
OFF
ON
PC-P2
ON
OFF
*1
*1) Combinations of VCTR1/VCTR2=L/L, H/H are not available.
-1-
NJG1512V
nABSOLUTE MAXIMUM RATINGS
(Ta=25°C, Zs=Zl=50Ω)
PARAMETER
SYMBOL
RATINGS
UNITS
Pin
27
dBm
VCTR
6.0
V
Power Dissipation
PD
600
mW
Operating Temp.
Topr
-20~+85
°C
Storage Temp.
Tstg
-40~+150
°C
Input Power
Control Voltage
nELECTRICAL CHARACTERISTICS 1
(TEST CIRCUIT 1: VCTR (L)=0V, VCTR (H)=2.7V, Zs=Zo=50Ω, Ta=25°C)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Control voltage (L)
VCTR (L)
f=0.05~2.5GHz, Pin=10dBm
-0.2
0
0.2
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
ISL1
f=0.05~2.0GHz, Pin=0dBm
43
46
-
dB
Insertion loss 1
LOSS1
f=1.0GHz, Pin=0dBm
-
0.6
1.0
dB
Insertion loss 2
Pin at 1dB
compression point
LOSS2
f=2.0GHz, Pin=0dBm
-
0.8
1.2
dB
19.0
22.0
-
dBm
VSWR
VSWR
f=0.05~2.5GHz, ON STATE
-
1.2
1.8
f=0.05~2.5GHz
-
8
-
Switching time
P-1dB
TSW
f=2.0GHz
ns
nELECTRICAL CHARACTERISTICS 2
(TEST CIRCUIT 2: VCTR (L)=0V, VCTR (H)=2.7V, Zs=Zo=50Ω, Ta=25°C)
PARAMETER
Isolation 2
Insertion loss 3
-2-
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ISL2
f=1~100MHz, Pin=0dBm
-
55
-
dB
LOSS3
f=1~100MHz, Pin=0dBm
-
0.5
-
dB
NJG1512V
nTYPICAL CHARACTERISTICS
P
in
Pin vs. Isolation
vs. Insertion Loss
(VCTR =0V/2.7V,fin =2GHz)
Isolation:ISL (dB)
Insertion Loss:LOSS (dB)
-1
PC-P1
PC-P2
-1.5
(VCTR=0V/2.7V,f in =2GHz)
-40
-0.5
-2
-2.5
-42
-44
PC-P1
PC-P2
-46
-48
-3
-50
-3.5
-5
0
5
10
15
20
25
-5
30
0
5
Input Power (dBm)
(PC-P1) P vs. P
in
(V
CTR
30
10
15
20
25
Input Power (dBm)
(PC-P2) P vs. P
in
out
(V
=0V/2.7V, f =2.0GHz)
CTR
in
out
=0V/2.7V, f =2.0GHz)
in
30
Pout
P-1
Output Power (dBm)
Output Power (dBm)
Pout
P-1
25
P-1(in) = 23.16 dBm
20
15
10
25
P-1(in) = 23.15 dBm
20
15
10
10
15
20
25
30
10
15
Input Power (dBm)
(PC-P1) P
in
CTR
Control Current:I CTR (uA)
4
3
=2.7V
2
V
1
CTR
=2.5V
0
-5
0
5
10
15
20
Input Power (dBm)
30
(f in=2GHz)
6
5
CTR
25
(PC-P2) Pin vs. ICTR
vs. I
(f in=2GHz)
V
20
Input Power (dBm)
6
Control Current:I CTR (uA)
30
25
30
5
4
3
V
=2.7V
V
=2.5V
CTR
2
1
CTR
0
-5
0
5
10
15
20
25
30
Input Power (dBm)
-3-
NJG1512V
nTYPICAL CHARACTERISTICS
-4-
NJG1512V
nTYPICAL CHARACTERISTICS
PC-P2 Isolation
1-100MHz
(VCTR=0V/2.7V)
1-100MHz
(VCTR=0V/2.7V)
0
-20
Isolation:ISL (dB)
Isolation:ISL (dB)
0
PC-P1 Isolation
-40
-60
-80
-20
-40
-60
-80
-100
0
20
40
60
80
-100
100
0
20
frequency (MHz)
PC-P1 Insertion Loss
80
100
1-100MHz
(V CTR=0V/2.7V)
0
Insertion Loss:LOSS (dB)
Insertion Loss:LOSS (dB)
60
PC-P2 Insertion Loss
1-100MHz
(V CTR=0V/2.7V)
0
40
frequency (MHz)
-0.5
-1
-1.5
-2
-0.5
-1
-1.5
-2
0
20
40
60
frequency (MHz)
80
100
0
20
40
60
80
100
frequency (MHz)
-5-
NJG1512V
nTYPICAL CHARACTERISTICS
0
PC-P1 Isolation
PC-P2 Isolation
0.1-3GHz
(VCTR =0V/2.7V)
0.1-3GHz
(VCTR =0V/2.7V)
0
-10
Isolation:ISL (dB)
Isolation:ISL (dB)
-10
-20
-30
-40
-50
-60
-40
-50
-70
0
500
1000
1500
2000
2500
3000
0
500
1000
1500
2000
2500
frequency (MHz)
frequency (MHz)
PC-P1 Insertion Loss
PC-P2 Insertion Loss
0.1-3GHz
(VCTR =0V/2.7V)
0.1-3GHz
(VCTR =0V/2.7V)
0
Insertion Loss:LOSS (dB)
0
Insertion Loss:LOSS (dB)
-30
-60
-70
-1
-2
-3
-4
-5
3000
-1
-2
-3
-4
-5
0
500
1000
1500
2000
frequency (MHz)
-6-
-20
2500
3000
0
500
1000
1500
2000
frequency (MHz)
2500
3000
NJG1512V
nAPPLICATION CIRCUIT: Single control signal operation by using C-MOS inverter
(frequency range: 0.1~2.0GHz)
VCTR2 (2.7V/0V)
C4
Zo=50Ω
1
14
2
13
3
12
4
11
5
10
6
9
7
8
P2
C1
Zo=50Ω
PC
C3
VCTR1 (0V/2.7V)
Zo=50Ω
C5
C2
NJG1512V
Test circuit 1
0.5~2GHz
Test circuit 2
1~500MHz
P1 C1~C3
56pF
0.1uF
C4, C5
10pF
1000pF
P2
P1
nRECOMMENDED PCB DESIGN
(TOP VIEW)
C1
C2
PCB SIZE=30.0x22.5mm
C4
C5
VCTR2
VCTR1
PCB: FR-4, t=0.5mm
STRIPLINE WIDTH =1mm
PC
C3
CAPACITOR: size 1005
PRECAUTIONS
[1] The external capacitors should be connected to the input and output RF terminals
(P1, P2, PC) to block DC current. Please use a 0.01uF capacitor at 50 to 100MHz, a
0.1uF capacitor at 100 to 500MHz, and 56pF at 500MHz to 2.0GHz.
[2] To avoid coupling between terminals, the capacitors have to be placed at the control
terminals (VCTR1, VCTR2) as close as possible. The capacitor values of 0.01uF at 50 to
100MHz, 100pF at 100 to 500MHz, and 10pF at 500MHz to 2GHz are desired. In
general, the switching time is depend on the capacitor values, so please be careful
choosing capacitor values.
[3] For good isolation characteristics, the ground terminals (2, 3, 5, 6, 9~13 pin) should
be directly connected to the ground patterns and through-holes as close as possible
using relatively wide patterns.
-7-
NJG1512V
nAPPLICATION CIRCUIT 1: Single control signal operation by using C-MOS inverter
(frequency: 0.1~2.0GHz)
56pF
1
14
2
13
3
12
4
11
5
10
6
9
Z0=50Ω
P2
Z0=50Ω
P1
10pF
Z0=50Ω
PC
56pF
+3.0V
VC
0.01uF
5
2
4
7S04
3
7
8
10pF
56pF
NJG1512V
510KΩ
VC=3.0V: PC-P1 ON
VC=0V: PC-P2 ON
[1]Please connect the bypass capacitor to the power supply terminal of the C-MOS inverter.
[2]In order to stabilize the input impedance of inverter, the input terminal of the C-MOS
inverter should be pulled down by the resistor of 510KΩ to the ground plane.
-8-
NJG1512V
nAPPLICATION CIRCUIT 2: High Isolation SPDT Switch
(PA to PC, PB to PC, and PA to PB Isolation are greater than [email protected]=0.7~2GHz)
C8
VCTR1
VCTR1
PA
Z0=50Ω
Z0=50Ω
7
P1
C6
8
C2
PC
P2
4
14
NJG1512V
C3
VCTR1
1
8
VCTR2
50Ω
Termination
PB
P1
Z0=50Ω
C9
14
C10
50Ω
Termination
7
Z0=50Ω
Z0=50Ω C4
C1
1
7
P1
4
P2 NJG1512V
VCTR1
PC
VCTR2
8
PC
P2
C5
C7
4
14
NJG1512V
1
VCTR2
C11
VCTR2
nPCB DESIGN
PC
C1
VCTR1
VCTR1
C9
C7
VCTR2
C10
VCTR2
C11
C8
C2
PA
C5
C3
VCTR2
50Ω
VCTR1
C4
50Ω
PB
PCB SIZE=40.0x30.0mm
PCB: FR-4 t=0.5mm
STRIPLINE WIDTH=1mm
CAPACITOR: size 1005
C1~C5: 56pF
C6~C11: 10pF
NOTE: As shown in the schematic above, the two 50Ω ports should be terminate externally.
-9-
NJG1512V
nPACKAGE OUTLINE (SSOP14)
Lead material: Copper
Lead surface finish: Solder plating
Molding material: Epoxy resin
UNIT: mm
Weight: 66mg
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.
- 10 -
[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.