AGILENT MGS

Absorptive SPDT GaAs MMIC
Switch
Technical Data
MGS-71008
Features
• Single-Pole, Double-Throw
Output
• Broad Bandwidth:
DC to 3␣ GHz
• High Isolation:
37␣ dB␣ Typical at 1␣ GHz
• Fast Switching Time:
3␣ ns␣ Typical
• Ultra Low DC Power
Consumption
• Small Surface-Mount Plastic
Package
Description
The MGS-71008 is a single-pole,
double-throw monolithic GaAs
MMIC switch. The J2 and J3 of the
MGS-71008 are terminated to
ground by internal 50 Ω load
resistors when “off” (a reflective
version, the MGS-70008, which
terminates the “off” port to
ground, is also available). The
switch is sealed in a small, plastic,
surface-mount SO-8 package.
Switching is actuated by a -5 V
control voltage per the truth table
shown on the next page. -3.3␣ V
operation is also possible with
some reduction in P1 dB and IP3.
The MGS-71008 is designed for
high volume commercial applications where low insertion loss,
high isolation, and fast switching
speed are required. Its low cost
and high performance make it
suitable for a wide variety of uses
such as digital cellular, spread
spectrum, GPS, and other RF
switching applications. Refer to
applications note AN-G007 for
more application details.
SO-8 Package
AC Equivalent
Circuit/Pinout
J1
Ground
Ground
Ground
J2
Control 1
J3
Control 2
The die is fabricated using HP’s
nominal 0.3␣ micron recessed
Schottky-barrier-gate, gold
metallization, and silicon nitride
passivation to achieve excellent
performance, uniformity, and
reliability.
7-161
5965-9118E
MGS-71008 Absolute Maximum Ratings
Symbol
TSTG
Parameter
Maximum Input Power
below 500 MHz
above 500 MHz
Control Voltage
Storage Temperature
Units
Absolute
Maximum[1]
dBm
dBm
V
°C
+27
+30
-8.0
-65 to 150
Note:
1. Operation of this device above any one of these limits may cause permanent
damage.
Electrical Specifications, TA = 25°C
Parameters and Test Conditions[1]
Symbol
IC
Control Input Current
BW
Bandwidth
IL
Insertion Loss
ISO
DC
Units
µA
GHz
Isolation
Min.
200 MHz
1000 MHz
2000 MHz
2500 MHz
3000 MHz
dB
dB
dB
dB
dB
200 MHz
1000 MHz
2000 MHz
2500 MHz
3000 MHz
dB
dB
dB
dB
dB
Typ. Max.
12
DC-3
0.9
1.2
1.3
1.4
1.5
30
Voltage Standing Wave Ration (on port)
DC -1000 MHz
1000-3000 MHz
—
—
1.2:1
1.3:1
VSWR
J2 or J3
Voltage Standing Wave Ration (off port)
DC -2000 MHz
2000-3000 MHz
—
—
1.2:1
1.3:1
ISW
Switching Speed
10% to 90%
ns
3
P1 dB[2]
Output @ 1 dB Gain Compression
200 MHz
1000 MHz
2000 MHz
dBm
dBm
dBm
16.5
25.2
25.2
IP3[2]
3rd Order Intercept
200 MHz
1000 MHz
2000 MHz
dBm
dBm
dBm
41
45
45
7-162
1.5
52
37
26
22
16
VSWR
J1, J2 or J3
Notes:
1. Measured in a 50 Ω system at 1 GHz, unless otherwise specified, V C = -5 V.
2. Measured in a 50 Ω system with VC = -7 V.
110
1.4:1
MGS-70008 Typical Performance, TA = 25°C
2:1
-10
-20
-1.0
-1.5
-2.0
ISOLATION (dB)
-0.5
OFF PORT VSWR
INSERTION LOSS (dB)
0
1.5:1
-40
1:1
0
1
2
-30
3
0
1
2
3
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 1. Insertion Loss vs. Frequency.
VControl = -5 V.
Figure 2. Off Port VSWR vs. Frequency.
VControl = -5 V.
2:1
-50
0
1
2
3
FREQUENCY (GHz)
Figure 3. Isolation vs. Frequency.
VControl = -5 V.
40
P1 dB (dBm)
ON PORT VSWR
30
1.5:1
20
10
1:1
0
1
2
0
3
0
FREQUENCY (GHz)
1
2
3
FREQUENCY (GHz)
Figure 4. On Port VSWR vs. Frequency.
VControl = -5 V.
Figure 5. Output Power vs. Frequency.
VControl = -7 V.
MGS-71008 Truth Table (Typical Performance at 1 GHz)
Control Input
C1
C2
0V
0V
0V
-5 V
-5 V
0V
-5 V
-5 V
For normal SPDT use
For normal SPDT use
Insertion Loss
J1-J2
J1-J3
16 dB
16 dB
37 dB
1.2 dB
1.2 dB
37 dB
26 dB
26 dB
Return Loss
J1
J2
J3
1 dB
1 dB
1 dB
22 dB 22 dB 22 dB
22 dB 22 dB
1 dB
1 dB
1 dB
1 dB
MGS-71008 Typical Power Performance vs. Frequency and Control Voltage (VC)
(All other typical specifications remain constant.)
VC = -7 V
Frequency
200 MHz
1000 MHz
2000 MHz
P1 dB
16.5 dBm
25.2 dBm
25.2 dBm
IP3
41 dBm
45 dBm
45 dBm
VC = -5 V
P1 dB
16.5 dBm
23.7 dBm
22.5 dBm
7-163
IP3
41 dBm
44 dBm
44 dBm
VC = -3.3 V
P1 dB
IP3
15.5 dBm
35 dBm
19.0 dBm
38 dBm
18.5 dBm
38 dBm
Typical Scattering Parameters, ON Switch Port, ZO = 50 Ω, TA = 25°C, VC = -5 V
Freq.
MHz
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
Mag.
.05
.05
.05
.05
.05
.06
.06
.07
.06
.06
.06
.07
.08
.11
.14
.20
.26
.31
.40
.51
.63
.82
S11
Ang.
-18.2
-18.3
-20.6
-18.7
-20.4
-26.3
-29.1
-38.1
-46.4
-63.8
-82.3
-109.8
-128.7
-153.4
-169.6
178.3
167.7
154.5
152.0
145.4
139.5
133.0
dB
-.9
-.9
-.9
-.9
-1.0
-1.0
-1.0
-1.1
-1.1
-1.2
-1.2
-1.3
-1.4
-1.5
-1.6
-2.0
-2.3
-2.4
-2.5
-3.0
-3.3
-3.1
S21
Mag.
.90
.90
.90
.90
.89
.89
.89
.88
.88
.87
.87
.86
.85
.84
.83
.79
.77
.76
.75
.71
.68
.70
Ang.
-5.1
-9.4
-13.9
-18.2
-22.8
-27.8
-32.7
-37.5
-42.4
-47.8
-53.5
-58.5
-63.2
-68.7
-74.0
-80.3
-83.8
-87.3
-90.3
-100.2
-101.6
-103.8
dB
-.9
-.9
-.9
-.9
-1.0
-1.0
-1.0
-1.0
-1.1
-1.1
-1.2
-1.2
-1.4
-1.5
-2.0
-2.5
-3.1
-3.3
-4.0
-4.6
-5.4
-6.1
S12
Mag.
.904
.9.6
.898
.898
.890
.893
.891
.889
.884
.879
.871
.867
.851
.838
.791
.746
.700
.686
.632
.588
.534
.498
S22
Ang.
-5.0
-9.2
-13.6
-17.8
-22.3
-26.9
-31.5
-36.3
-41.5
-46.6
-52.2
-57.8
-62.9
-70.0
-76.5
-82.8
-87.2
-93.8
-99.3
-99.6
-101.6
-104.6
Mag.
.05
.04
.03
.02
.02
.01
.02
.02
.01
.01
.03
.05
.08
.11
.16
.20
.26
.29
.37
.37
.43
.46
Ang.
-14.1
-10.1
-8.2
8.9
30.5
42.3
55.2
59.1
19.1
-75.6
-103.5
-115.3
-126.2
-134.4
-144.1
-152.8
-163.4
-168.1
-169.7
167.2
168.5
162.7
Typical Scattering Parameters, OFF Switch Port, ZO = 50 Ω, TA = 25°C, VC = -5 V
Freq.
GHz
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
Mag.
.06
.05
.05
.06
.06
.07
.08
.08
.08
.07
.08
.07
.06
.05
.05
.08
.16
.23
.34
.45
.54
.65
S11
Ang.
-9.8
0
27.3
20.7
21.7
20.6
15.7
-5.6
-11.8
-17.0
-24.6
-40.0
-46.7
-66.2
-112.4
-158.0
170.2
158.7
146.0
138.0
129.9
125.4
dB
-52.0
-42.4
-36.4
-35.2
-33.7
-31.4
-30.5
-28.0
-26.0
-24.4
-21.9
-20.9
-20.0
-18.4
-16.5
-15.4
-14.4
-13.6
-12.4
-11.4
-12.0
-10.8
S21
Mag.
0
.01
.02
.02
.02
.03
.03
.04
.05
.06
.08
.09
.10
.12
.15
.17
.19
.21
.24
.27
.25
.29
Ang.
73.6
94.8
113.0
92.3
106.1
114.5
122.9
112.0
122.0
121.9
124.3
119.5
119.4
119.0
116.5
111.0
100.7
100.8
97.3
83.0
82.7
81.1
7-164
dB
-46.0
-41.9
-36.5
-35.4
-33.6
-32.0
-29.1
-27.7
-26.2
-24.2
-22.3
-20.4
-19.6
-17.8
-16.1
-14.4
-13.8
-13.0
-12.8
-11.7
-12.6
-11.9
S12
Mag.
.005
.008
.015
.017
.021
.025
.035
.041
.049
.062
.077
.095
.105
.129
.157
.191
.204
.223
.229
.260
.234
.253
S22
Ang.
74.7
95.5
113.7
93.0
107.1
116.4
125.5
114.2
124.9
125.4
128.3
123.5
124.0
122.9
119.7
113.1
100.3
96.7
90.9
78.3
78.8
74.5
Mag.
.01
.03
.05
.07
.08
.10
.12
.14
.16
.18
.21
.23
.25
.27
.30
.32
.33
.35
.36
.33
.39
.39
Ang.
146.5
130.7
125.1
116.9
115.7
114.8
114.6
116.3
115.2
117.1
118.5
117.9
117.8
117.9
118.0
116.2
119.8
120.5
124.0
113.0
120.7
116.1
SO-8 Package Dimensions
1.27 (.050)
6x
3.80/4.00
(.1497/.1574)
5.84/6.20
(.230/.244)
0.38 ± 0.10
(.015 ± .004) x 45°
Pin 1
1.35/1.75
(.0532/.0688)
4.72/5.00
(.186/.197)
0°/8°
0.10 (.004)
0.33/0.51
(.013/.020) 8X
0.19/0.25
(.0075/.0098)
0.10/0.25
(.004/.0098)
Note:
1. Dimensions are shown in millimeters (inches).
0.41/1.27
(.016/.050)
7-165