Details, datasheet, quote on part number: SW-438
CategoryRF & Microwaves => Switches
Description GaAs SPDT Switch DC - 3.0 GHZ
CompanyM/A-COM, Inc.
DatasheetDownload SW-438 datasheet
Cross ref.Similar parts: UPG2009TB
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Features, Applications


Low Insertion Loss, @ 2.4 High Isolation, 2.4 GHz1 Low Power Consumption, +3 V Low Cost Plastic SOT-363 Package

For best results at 2.4 GHz, use pF 0402 profile SMT capacitors on RF ports and 100 pF bypassing on pins 4 and 6.


The 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 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.

Pin No. 1 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

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 pF (0402) capacitor is recommended for - 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 pF or more.

Part Number SW-438TR-3000 SW-438SMB Package on 13 Inch, 3000 piece Reel SW-438 sample test board

External DC blocking capacitors are required on all RF ports. If negative control is used, DC blocking capacitors are not required on RF ports.

GaAs SPDT Switch, DC-3.0 GHz Electrical Specifications: 25C, 3V Control

Parameter Insertion Loss Isolation Test Conditions DC-3.0 GHz DC-1.0 GHz 1.0-2.0 GHz 2.0-3.0 GHz DC-1.5 GHz 1.5-3.0 GHz 500 MHz-2.0 GHz 500 MHz-2.0 GHz 2-tone 900 MHz, 5 MHz spacing 2-tone 900 MNz, 5 MHz spacing (2.3V) 2.4 GHz Pin = 20 dBm, 2.3V 2.4 GHz Pin = 20 dBm, 2.3V 50% ctl 90% RF |Vctl| = 5V Units dB dBm dBc ns A Min Typ

Return Loss (2.3 V supply) P1dB (3V supply) IP3 2nd Harmonic 3rd Harmonic Ton, Toff Trise, Tfall Gate Leakage

Specifications subject to change without notice. n North America: Tel. 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. 300 020

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Specifications subject to change without notice. n North America: Tel. 366-2266 n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298 n Europe: Tel. 300 020


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