SW-438 Datasheet, PDF (1/4 Pages) Tyco Electronics – GaAs SPDT Switch DC. 3.0 GHz

SW-438
GaAs SPDT Switch
DC - 3.0 GHz
Features
• Low Insertion Loss, 0.7 dB @ 2.4 GHz¹
• High Isolation, 25 dB @ 2.4 GHz¹
• Low Power Consumption, < 10 µA @ +3 V
• Low Cost Plastic SOT-363 Package
1. For best results at 2.4 GHz, use 8 pF 0402 profile SMT
capacitors on RF ports and 100 pF bypassing on pins 4
and 6.
Description
The SW-438 is a GaAs MMIC SPDT switch in a low
cost SOT-363 surface mount plastic package.
Typical applications include transmit/receive
switching for Bluetooth and WLAN equipment. The
SW-438 can also be used in applications up to 500
mW in systems such as cellular, PCS, DCS1800,
GSM, CDMA and other analog and digital wireless
communications systems.
M/A-COM fabricates the SW-438 using a 0.5
micron gate length GaAs p-HEMT process. The
process features full passivation for increased
performance and reliability.
External Component Requirements
Please note the values of the external capacitors.
The capacitors at each of the RF ports are used as
for achieving optimum insertion loss. They also
provide DC blocking for positive control. The 8 pF
(0402) capacitor is recommended for 2 - 3 GHz
operation. If this value is changed or the capacitor
placed too far from the switch, the performance will
be affected. We also recommend 100 pF bypass
capacitors on pins 4 and 6.
For broadband applications with positive control
voltages, use DC blocking capacitors with value of
39 pF or more.
Ordering Information ²
Part Number
SW-438TR-3000
Package
SW-438 on 13 Inch, 3000 piece reel
SW-438SMB
SW-438 sample test board
2. Reference Application Note M513 for reel size information.
Functional Schematic
C=100pF
C=8pF
C=100pF
C=100pF
V1
RFC
V2
V1
Rev. V6
C^≥39pF
C=100pF
RFC
V2
RF1
GND
RF2
PIN 1
2.4 GHz Application
C=8pF
C=8pF
RF1
GND
RF2
PIN 1
Broad Band Applications
C^≥39pF
C^≥39pF
Pin Configuration
Pin No.
1
2
3
4
5
6
Function
RF1
GND
RF2
V2
RFC
V1
Description
RF Input/Output
RF Ground
RF Input/Output
Control 2 Input
RF Common Port
Control 1 Input
Absolute Maximum Ratings ³
Parameter
Absolute Maximum
Input (0.5-3.0 GHz)
3 V Control
5 V Control
+30 dBm
+33 dBm
Operating Voltage
+8.5 Volts
Operating Temperature
-40°C to +85°C
Storage Temperature
-65°C to +150°C
3. Exceeding any one or combination of these limits may cause
permanent damage to this device.
1
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is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
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Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. _{M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make}
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.