SW-438

www.DataSheet4U.com GaAs SPDT Switch DC– 3.0 GHz Functional Schematic GHz 1 C=100pF C=8pF C=100pF C=100pF C≥39pF V 1.00 SW-438 Features 1. Low Insertion Loss, 0.7 dB @ 2.4 High Isolation, 25 dB @ 2.4 GHz1 Low Power Consumption, < 10 µA @ +3 V Low Cost Plastic SOT-363 Package 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. C=100pF V1 RFC V2 V1 RFC V2 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. RF1 GND RF2 RF1 GND RF2 PIN 1 2.4 GHz Application C=8pF C=8pF PIN 1 Broad Band Applications C≥39pF C≥ 39pF Pin Configuration 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 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 recomme...