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Reflective GaAs SP4T Switch DC - 4 GHz
Features
* * * * Low Insertion Loss: 0.7 dB Typical Fast Switching Speed: 4 nS Typical Ultra Low DC Power Consumption Small Package Size: 0.250" Square
RF1
SW-243 V3
Functional Schematic
GND RF COM GND RF4
Description
M/A-COM's SW-243 GaAs MMIC SP4T switch is packaged in a CR-4 surface mount ceramic style package. The SW-243 is a reflective switch, optimized for low insertion loss. The CR-4 package is hermetically sealed, making these switches ideal for space, military radios, or other environmentally harsh applications. Typical applications include synthesizer switching, switch matrices and filter banks in systems such as military radios, and space equipment. The SW-243 is fabricated as a monolithic GaAs MMIC using a 1.0 micron MESFET process.
A4
A1
B4
B1
B3
B2
A3 Orientation Tab
A2
RF2
GND
RF3
Pin Configuration3
Pin No.
1 2 3
Function
RF Port 1 Control A1 Control B1 Control B2 Control A2 RF Port 2 Ground RF Port 3
Pin No.
9 10 11 12 13 14 15 16
Function
Control A3 Control B3 Control B4 Control A4 RF Port 4 Ground RF Common Ground
Ordering Information
Part Number
SW-243
Package
Ceramic (CR-4)
4 5 6 7
Absolute Maximum Ratings 1,2
Parameter
Input Power 0.05 GHz 0.5 - 4.0 GHz Control Voltage Operating Temperature Storage Temperature
8
Absolute Maximum
+26 dBm +33 dBm -8.5 V < Vc < +5 V -55C to +125C -65C to +150C
3. Bottom of case is RF ground.
1. Exceeding any one or combination of these limits may cause permanent damage to this device. 2. M/A-COM does not recommend sustained operation near these survivability limits.
1
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information.
* North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information.
Reflective GaAs SP4T Switch DC - 4 GHz
Electrical Specifications: TA = -55 to +85C, Vc = 0 V / -5 V, Z0 = 50 4,5
Parameter
Insertion Loss
SW-243 V3
Test Conditions
DC - 0.5 GHz DC - 1 GHz DC - 2 GHz DC - 4 GHz DC - 0.5 GHz DC - 1 GHz DC - 2 GHz DC - 4 GHz DC - 0.5 GHz DC - 1 GHz DC - 2 GHz DC - 4 GHz 10% to 90% RF, 90% to 10% RF 50% control to 90% RF, 50% control to 10% RF In-Band 0.5 - 4 GHz, 0 / -5 VDC 0.05 GHz, 0 / -5 VDC 0.5 - 4 GHz, 0 / -8 VDC 0.05 GHz, 0 / -8 VDC For two-tone input power up to +13 dBm 0.5 - 4 GHz 0.05 GHz For two-tone input power up to +13 dBm 0.5 - 4 GHz 0.05 GHz Vc = 0 to 0.2 V Vc= 5 V Vc= 8 V
Units
dB dB dB dB dB dB dB dB Ratio Ratio Ratio Ratio nS nS mV dBm dBm dBm dBm dBm dBm dBm dBm A A A
Min.
-- -- -- -- 35 30 25 20 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
Typ.
-- -- -- -- -- -- -- -- -- -- -- -- 2 4 25 26 20 32 23 68 55 46 37 -- 10 --
Max.
0.8 0.9 1.0 1.3 -- -- -- -- 1.25:1 1.25:1 1.5:1 1.9:1 -- -- -- -- -- -- -- -- -- -- -- 5 -- 100
Isolation
VSWR
Trise, Tfall 5 Ton, Toff
5 5
Transients
Input P1dB
IP2
IP3
Control Current
4. See MIL-STD-883 for environmental screening options. 5. Faster switching speed can be achieved with enhanced driver waveform.
Handling Procedures
Please observe the following precautions to avoid damage:
Truth Table6,7
Control Input Condition of Switch, RF Common to each RF Port RF2 Off On Off Off RF3 RF4 Off Off On Off Off Off Off On
Static Sensitivity
Gallium Arsenide Integrated Circuits are sensitive to electrostatic discharge (ESD) and can be damaged by static electricity. Proper ESD control techniques should be used when handling these devices.
A1 B1 A2 B2 A3 B3 A4 B4 RF1 1 0 0 0 0 1 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 0 1 1 1 1 0 On Off Off Off
6. 0 = 0 V to -0.2 V, 1 = -5 V to -8 V 7. When an RF output port is "off" it is shorted to ground through an "on" shunt MESFET. 2
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information.
* North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information.
Reflective GaAs SP4T Switch DC - 4 GHz
Typical Performance Curves
Insertion Loss
2.0
SW-243 V3
Isolation
70 60
1.5
+25C +85C -55C
50 40
1.0 30 20 10 0.0 0 1 2 3 4 5 0 0 1 2 3 4 5
0.5
Frequency (GHz)
Frequency (GHz)
VSWR
2.0
CR-4
1.8
1.6
1.4
1.2
1.0 0 1 2 3 4 5
Frequency (GHz)
3
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information.
* North America Tel: 800.366.2266 / Fax: 978.366.2266 * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information.

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