Page 1
Preliminary
Preliminary
Preliminary
Product Description
SSW-408
Stanford Microdevices’ SSW-408 is a high performance Gallium Arsenide Field Effect Transistor MMIC switch housed in a
low-cost surface mountable small outline plastic package.
DC-4 GHz High Power GaAs MMIC
SPDT Switch
This single-pole, double-throw reflective switch consumes less
than 50uA and can operate with positive or negative 3V to 8V
supply voltages, making it suitable for use in both infrastructure and subscriber equipment. This switch can be used in all
analog and digital wireless communication systems including
(but not limited to) AMPS, PCS, DECT, IS-95, IS-136, 802.11,
CDPD and GSM.
At +5V or –5V bias, typical output power at 1dB compression
is 3 watts. 1dB output power over 4 watts and IP3 over +55dBm
may be achieved with higher control voltages.
Isolation vs. Frequency
VControl = -5 V
-10
Product Features
• High Compression Point : up to 4 Watts
• HIgh Linearity : TOIP +55dBm @2GHz
• Low DC Power Consumption
• Low Insertion Loss : 1.2dB at 2GHz
• Operates from Positive or Negative 3V to 8V
Supplies
-20
dB
-30
• Low Cost Small Outline Plastic Package
Applications
• Analog/Digital Wireless Communications
-40
DC1234
GHz
Electrical Specifications at Ta = 25C
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ffoRWSV
P
Bd1
PIOT
dI
wsI
The information provided herein is believed to be reliable at press time. Stanford Microdevices assumes no responsibility for inaccuracies or omissions.
Stanford Microdevices assumes no responsibility for the use of this information, and all such information shall be entirely at the user ’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. Stanford Microdevices does not authorize or warrant any Stanford
Microdevices product for use in life-support devices and/or systems.
Copyright 2000 Stanford Microdevices, Inc. All worldwide rights reserved.
522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC
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)tropno(
)tropffo(
tseT&sretemaraP
ssoLnoitresnIzHG0.1-50.0=f
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RWSVtuptuO&tupnI
zHG0.2@rewoPtuptuO
noisserpmoCBd1ta
tpecretnIredrOdrihTV8-roV8+=V
tnerruCeciveDAu04
deepSgnihctiwS
%01ot%09ro%09ot%01
V5-ro5+=vsmho05=oZ:snoitidnoC
• Spread Spectrum
• AMPS, PCS, DECT, IS-95, IS-136, 802.11,
CDPD and GSM.
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zHG0.2-00.1=f
zHG00.4-00.2=f
zHG0.2-00.1=f
zHG00.4-00.2=f
zHG0.2-50.0=f
zHG0.4-00.2=f
zHG0.2-50.0=f
zHG0.4-00.2=f
V8-roV8+=V
V5-roV5+=V
V3-roV3+=V
V5-roV5+=V
V3-roV3+=V
Bd
Bd
Bd
Bd
Bd
Bd
Bd
Bd
Bd
Bd
Bd
Bd
cesn01
42
81
http://www.stanfordmicro.com
9.0
2.1
5.1
82
22
81
2.1
5.1
2.1
5.1
63+
43+
13+
55+
35+
05+
EDS-101099 Rev -A
3.1
5.1
Page 2
Truth Table
ddV
)1eton(
1V
)2eton(
2V
)2eton(
00V-
0V-0
)3eton(
V+
V+
Note 1: The “Vdd” pin should be permanently connected to the most positive control voltage. If using
positive (0V / 5V) control signals, Vdd = 5V. If using negative (-5V / 0V) control voltages, Vdd = 0V.
Note 2: The differential control voltage (v = |V1 - V2|) may be from 3V to 8V in magnitude.
Note 3: Decouple “Vdd” to a good RF ground, and use DC blocking capacitors on all RF pins (J1, J2, & J3).
0V+
)3eton(
V+0
2J-1J3J-1J
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noitalosI
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Caution:
Appropriate precautions in handling,
packaging and testing devices must be
observed.
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53J2tuoFR
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7DNGdnuorG
82J1tuoFR
Pin Out
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21VlaitnereffiD
31JniFR
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Note 1: The switch state shown is when V1 is 3v to 8v greater than V2.
Preliminary
Preliminary
Preliminary
SSW-408 DC-4.0GHz GaAs MMIC Switches
Absolute Maximum Ratings
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Switch Schematic
V8+roV8-
C58+otC54-
C051+otC56-
W/Cged02
Insertion Loss vs. Frequency
0.0
-0.5
dB
-1.0
-1.5
-2.0
DC1234
The information provided herein is believed to be reliable at press time. Stanford Microdevices assumes no responsibility for inaccuracies or omissions.
Stanford Microdevices assumes no responsibility for the use of this information, and all such information shall be entirely at the user ’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. Stanford Microdevices does not authorize or warrant any Stanford
Microdevices product for use in life-support devices and/or systems.
Copyright 2000 Stanford Microdevices, Inc. All worldwide rights reserved.
522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC
VControl = -5 V
GHz GHz
On Port Input/Output VSWR vs. Frequency
2.0
1.8
1.6
dB
1.4
1.2
1.0
DC1234
VControl = -5 V
http://www.stanfordmicro.com
2
EDS-101099 Rev -A
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