NJG1657MD7
DPDT SWITCH GaAs MMIC
! GENERAL DESCRIPTION
The NJG1657MD7 is a GaAs DPDT switch featured low
insertion loss, high isolation and small size package, and suited
for mobile terminal applications.
The NJG1657MD7 switches a path between common RF port
and five RF ports by three bit control signal from 1.7V of logical
high voltage. In addition, this switch includes ESD protection
circuits for good ESD tolerance.
The NJG1657MD7 is available in a very small, lead-free,
halogen-free, 1.6mm x 1.6mm x 0.397 mm, 14-pin EQFN14-D7
package.
! FEATURES
" Low insertion loss
" High isolation
" High power handling
" Package
! PACKAGE OUTLINE
NJG1657MD7
0.3dB typ. @f=0.9GHz, PIN=30dBm
32dB typ. @f=0.9GHz, PIN=30dBm
P-0.1dB=33dBm min. @f=0.9GHz, VDD=2.85V
EQFN14-D7 (Package size: 1.6x1.6x0.397mm typ.)
! PIN CONFIGURATION
EQFN14-D7
(Top view)
14
13
12
1
11
Pin connection
8. GND
1. GND
9. P2
2. GND
10. GND
3. P1
11. GND
4. GND
12. VDD
5. P3
13. CTL1
6. GND
14. CTL2
7. P4
*Exposed PAD: GND
DECODER
2
10
SW5
3
SW6
SW3
9
SW2
SW1
SW4
4
8
5
6
7
! TRUTH TABLE
“High”=VCTL(H), “Low”=VCTL(L)
PATH
CTL1
CTL2
SW1
SW2
SW3
SW4
SW5
SW6
P1-P3
Low
Low
ON
OFF
OFF
ON
OFF
ON
P1-P4
High
Low
OFF
ON
ON
OFF
OFF
ON
P2-P3
Low
High
OFF
ON
ON
OFF
ON
OFF
P2-P4
High
High
ON
OFF
OFF
ON
ON
OFF
NOTE: Please note that any information on this catalog will be subject to change.
Ver.2008-08-22
-1-
NJG1657MD7
! ABSOLUTE MAXIMUM RATINGS
Ta=+25°C, Zs=Zl=50 ohm
PARAMETER
SYMBOL
CONDITIONS
CONDITIONS
UNITS
RF Input Power
PIN
VDD=2.85V, VCTL=0/2.6V
36
dBm
Supply Voltage
VDD
VDD terminal
5.0
V
Control Voltage
VCTL
CTL1, CTL2 terminal
5.0
V
1300
mW
4-layer FR4 PCB with through-hole
(74.2x74.2mm), Tj=150°C
Power Dissipation
PD
Operating Temp.
Topr
-40~+95
°C
Storage Temp.
Tstg
-55~+150
°C
! ELECTRICAL CHARACTERISTICS1 (DC CHARACTERISTICS)
General conditions: VDD=2.85V, VCTL(L)=0V, VCTL(H)=2.6V, Ta=+25°C, ZS=Zl=50 ohm, with application circuit
PARAMETERS
SYMBOL
Operating Voltage
VDD
Operating Current
IDD
CONDITIONS
PIN=30dBm
MIN
TYP
MAX
UNITS
2.5
2.85
4.5
V
-
50
100
µA
Control Voltage (LOW)
VCTL(L)
0
-
0.5
V
Control Voltage (HIGH)
VCTL(H)
1.7
2.6
4.5
V
ICTL
-
5
10
µA
Control Current
-2-
NJG1657MD7
! ELECTRICAL CHARACTERISTICS2 (RF CHARACTERISTICS)
General conditions: VDD=2.85V, VCTL(L)=0V, VCTL(H)=2.6V, Ta=+25°C, ZS=Zl=50 ohm, with application circuit
PARAMETERS
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Insertion Loss 1
LOSS1
f=0.9GHz, PIN=30dBm
-
0.30
0.45
dB
Insertion Loss 2
LOSS2
f=1.9GHz, PIN=30dBm
-
0.40
0.55
dB
Isolation 1
ISL1
f=0.9GHz, PIN=30dBm
30
32
-
dB
Isolation 2
ISL2
f=1.9GHz, PIN=30dBm
24
26
-
dB
0.1dB Compression
input power
P-0.1dB
f=0.9GHz
33
35
-
dBm
2nd Harmonic Suppression
2fo
f=0.9GHz, PIN=30dBm
-
-75
-60
dBc
3rd Harmonic Suppression
3fo
f=0.9GHz, PIN=30dBm
-
-75
-60
dBc
f=0.9GHz, ON State
-
1.2
1.4
-
2
5
VSWR (PC, P1, P2)
Switching time
VSWR
TSW
µs
-3-
NJG1657MD7
! TERMINAL INFORMATION
No.
SYMBOL
DESCRIPTION
1,2,4,6,8,
10,11
GND
Ground terminal. Please connect this terminal with ground plane as close
as possible for excellent RF performance.
3
P1
RF input / output port. External capacitor is required to block the DC bias
voltage of internal circuit.
5
P3
RF input / output port. External capacitor is required to block the DC bias
voltage of internal circuit.
7
P4
RF input / output port. External capacitor is required to block the DC bias
voltage of internal circuit.
9
P2
RF input / output port. External capacitor is required to block the DC bias
voltage of internal circuit.
12
VDD
A supply voltage terminal (+2.5~+4.5V). Please place a bypass capacitor
between this and GND for avoiding RF noise from outside.
13
CTL1
Control port. “High level” is DC +1.7V~4.5V, “Low level” is DC 0~+0.5V.
14
-4-
CTL2
NJG1657MD7
! ELECTRICAL CHARACTERISTICS (With Application circuit, Loss of external circuit are excluded)
0.0
Insertion Loss vs. Frequency
VSWR vs. Frequency
( P1-P3 ON, VDD=2.85V, CTL1=CTL2=0V )
( P1-P3 ON, VDD=2.85V, CTL1=CTL2=0V )
2.0
1.8
-0.5
VSWR
Insertion Loss (dB)
P1 port
P3 port
-1.0
1.6
1.4
-1.5
1.2
-2.0
0.5
1.0
1.5
2.0
2.5
1.0
0.5
3.0
1.0
Frequency (GHz)
Isolation vs. Frequency
0
2.0
2.5
3.0
Insertion Loss vs. Input Power
( f=0.9GHz, P1-P3 ON, CTL1=CTL2=0V )
( P1-P3 ON, VDD=2.85V, CTL1=CTL2=0V )
0.0
P1-P2
P3-P4
Insertion Loss (dB)
-5
-10
Isolation (dB)
1.5
Frequency (GHz)
-15
-20
-25
-30
-0.5
-1.0
V =2.5V
DD
V =2.85V
-1.5
DD
V =3.2V
DD
-35
V =4.5V
DD
-40
0.5
1.0
1.5
2.0
2.5
-2.0
3.0
10
15
20
Frequency (GHz)
30
35
40
Input Power (dBm)
Harmonics vs. Input Power
Transmission vs. Control Voltage
( f=900MHz, P1-P3 ON, CTL1=CTL2=0V )
( P2-P4 ON, f=900MHz, V =2.85V, CTL1=2.6V )
DD
-50
0
2fo
3fo
-5
Transmission (dB)
-55
Harmonics (dBc)
25
-60
-65
-70
-75
-80
-10
-15
o
-45 C
o
-20
-20 C
o
+25 C
-25
o
+70 C
o
-90
+90 C
Input 2fo=-88dBc
Input 3fo=-86dBc
-85
20
22
24
26
28
Input Power (dBm)
30
-30
32
o
+100 C
-35
0
0.5
1
1.5
2
CTL2 Voltage ( V )
-5-
NJG1657MD7
! ELECTRICAL CHARACTERISTICS (With Application circuit, Loss of external circuit are excluded)
Insertion Loss vs. Ambient Temperature
VSWR vs. Ambient Temperature
( P1-P3 ON, V =2.85V, CTL1=CTL2=0V )
( P1 port, V =2.85V, CTL1=CTL2=0V )
DD
0.0
DD
2.0
1.8
f=1.9GHz
-0.5
VSWR
Insertion Loss (dB)
f=0.9GHz
-1.0
f=0.9GHz
1.6
1.4
f=1.9GHz
-1.5
1.2
-2.0
1.0
-50
0
50
-50
100
o
P1-P2 Isolation vs. Ambient Temperature
P1-P2 Isolation vs. Ambient Temperature
( f=1.9GHz, V =2.85V )
DD
DD
-20
P1-P3 ON
P1-P4 ON
P2-P3 ON
P2-P4 ON
P1-P3 ON
P1-P4 ON
P2-P3 ON
P2-P4 ON
-25
Isolation (dB)
-25
Isolation (dB)
100
o
( f=900MHz, V =2.85V )
-30
-35
-30
-35
-40
-40
-50
0
50
100
-50
o
0
50
100
o
Ambient Temperature ( C )
Ambient Temperature ( C )
P3-P4 Isolation vs. Ambient Temperature
P3-P4 Isolation vs. Ambient Temperature
( f=1.9GHz, V =2.85V )
( f=900MHz, V =2.85V )
DD
-20
DD
-20
P1-P3 ON
P1-P4 ON
P2-P3 ON
P2-P4 ON
P1-P3 ON
P1-P4 ON
P2-P3 ON
P2-P4 ON
-25
Isolation (dB)
-25
Isolation (dB)
50
Ambient Temperature ( C )
-20
-30
-30
-35
-35
-40
-40
-50
0
50
100
o
Ambient Temperature ( C )
-6-
0
Ambient Temperature ( C )
-50
0
50
100
o
Ambient Temperature ( C )
NJG1657MD7
! ELECTRICAL CHARACTERISTICS (With Application circuit, Loss of external circuit are excluded)
P1-P3 Isolation vs. Ambient Temperature
P2-P4 Isolation vs. Ambient Temperature
( f=900MHz, V =2.85V )
( f=900MHz, V =2.85V )
DD
-20
DD
-20
P1-P4 ON
P1-P4 ON
P2-P3 ON
P2-P3 ON
-25
Isolation (dB)
Isolation (dB)
-25
-30
-30
-35
-35
-40
-40
-50
0
50
100
-50
0
o
DD
vs. Ambient Temperature
CTL
100
Ambient Temperature ( C )
P
I ,I
50
o
Ambient Temperature ( C )
-0.1dB
vs. Ambient Temperature
( f=0.9GHz, P1-P3 ON, V =2.85V )
DD
37
60
I
I
DD
36
CTL
35
(dBm)
40
-0.1dB
30
34
33
P
Current I
I
DD CTL
(µA)
50
20
32
10
31
0
30
-50
0
50
100
-50
o
50
100
Ambient Temperature ( C )
3rd Harmonics vs. Input Power
2nd Harmonics vs. Input Power
( f=900MHz, P1-P3 ON, CTL1=CTL2=0V )
( f=900MHz, P1-P3 ON, CTL1=CTL2=0V )
-50
-50
o
-45 C
-55
o
-20 C
-60
o
+25 C
o
+70 C
-65
o
+90 C
o
+100 C
-70
o
-45 C
-55
o
3rd Harmonics (dBc)
2nd Harmonics (dBc)
0
o
Ambient Temperature ( C )
-75
-80
Input 2fo=-88dBc
-85
-20 C
-60
o
+25 C
o
+70 C
-65
o
+90 C
o
+100 C
-70
-75
-80
-85
Input 2fo=-86dBc
-90
-90
20
22
24
26
28
Input Power (dBm)
30
32
20
22
24
26
28
30
32
Input Power (dBm)
-7-
NJG1657MD7
! ELECTRICAL CHARACTERISTICS (With Application circuit, Loss of external circuit are excluded)
Switching Time
Switching Time vs. Ambient Temperature
( V =2.85V, CTL1=0V )
( V =2.85V )
DD
DD
2
Switching Time (us)
Voltage (arb. unit)
CTL2 Port
1.3 µs
P3 Port
1.5
1
0.5
0
-50
Time (0.5µ sec/div)
0
50
100
o
Ambient Temperature ( C )
Current I
Insertion Loss vs. Input Power
DD
vs. Input Power
( f=0.9GHz, P1-P3 ON, CTL1=CTL2=0V )
( f=0.9GHz, P1-P3 ON, CTL1=CTL2=0V )
60
0.0
(uA)
40
DD
Current I
Insertion Loss (dB)
50
-0.5
-1.0
V =2.5V
DD
V =2.85V
-1.5
30
V =2.5V
20
DD
V =2.85V
DD
DD
V =3.2V
V =3.2V
10
DD
DD
V =4.5V
V =4.5V
DD
DD
-2.0
0
10
15
20
25
30
Input Power (dBm)
-8-
35
40
10
15
20
25
30
Input Power (dBm)
35
40
NJG1657MD7
! APPLICATION CIRCUIT
0/2.6V
0/2.6V
1000pF
CTL2
14
CTL1
13
2.85V
VDD
12
1
11
DECODER
2
10
SW5
P1
3
56pF
SW6
SW3
P2
9
SW2
SW1
56pF
SW4
4
8
5
6
7
56pF
56pF
P3
P4
! TEST PCB LAYOUT
(TOP VIEW)
PCB: FR-4, t=0.2mm
GND
VDD
CTL1
CTL2
Capacitor size: 1005
Strip Line Width: 0.4mm
PCB size: 26 x 26mm
P1
P2
C5
C1
C3
C2
Losses of PCB, capacitors and connectors
Frequency (GHz)
Loss (dB)
0.9
0.30
1.9
0.49
C4
PARTS LIST
PART ID
Value
C1~C4
56pF
MURATA
1000pF
(GRM15)
C5
P3
COMMENT
P4
PRECAUTIONS
[1]The DC blocking capacitors have to be placed at RF terminal of P1, P2, P3, P4 and PC.
Please choose appropriate capacitance values to the application frequency.
[2]To reduce strip line influence on RF characteristics, please locate bypass capacitors(C5)
as close as possible to each terminals.
[3]For good isolation, the GND terminal must be connected to the ground plane of substrate,
and through-holes for GND should be placed near by the pin connection.
-9-
NJG1657MD7
! PACKAGE OUTLINE (EQFN14-D7)
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.