GaAs DPDT Switch DC-4 GHz SW-281 V 2.00 CR-4 Features ● ● ● ● Low Insertion Loss, 0.5 dB Typical Miniature Relay Replacement, 0.250” Sq. Pkg. Fast Switching Speed, 4 ns Typical Ultra Low DC Power Consumption Guaranteed Specifications * (From -55°C to +85°C) Frequency Range Insertion Loss DC-4 GHz DC-2 GHz DC-1 GHz DC-0.5 GHz VSWR DC-4 GHz DC-2 GHz DC-1 GHz DC-0.5 GHz Isolation DC-4 GHz DC-2 GHz DC-1 GHz DC-0.5 GHz DC - 4 GHz 1.2 dB Max 0.8 dB Max 0.7 dB Max 0.6 dB Max 1.8:1 Max 1.5:1 Max 1.2:1 Max 1.2:1 Max 20 dB Min 30 dB Min 40 dB Min 50 dB Min Bottom of Case is AC Ground. Dimensions in ( ) are in mm. Unless Otherwise Noted:.xxx = ±0.010 (.xx = ±0.25) .xx = ±0.02 (.x = ±0.5) Operating Characteristics Impedance 50 Ohms Nominal Switching Characteristics† Trise, Tfall (10/90% or 90/10% RF) 2 ns Typ Ton, Toff (50% Control to 90/10% RF) 4 ns Typ Transients (In-Band) 15 mV Typ Input Power for 1 dB Compression Control Voltages (Vdc) 0/-5 0/-8 0.5 to 4 GHz +27 +33 dBm Typ 0.05 GHz +21 +26 dBm Typ Intermodulation Intercept Point (for two-tone input power up to +5 dBm) Intercept Points IP2 IP3 0.5 to 4 GHz +68 +48 dBm Typ 0.05 GHz +62 +45 dBm Typ Control Voltages (Complementary Logic) VIN Low 0 to -0.2 V @ 5 µA Max VIN Hi -5V @ 10 µA Typ to -8V @ 100 µA Max Environmental See Appendix for MIL-STD-883 screening option. All specifications apply with 50 ohm impedance connected to all RF ports with 0 and -5 Vdc control voltages. † Faster switching speed can be achieved with enhanced driver waveform. ** When an RF output is ‘off’ it is shorted to ground through an ‘on’ shunt MESFET. * Ordering Information Model No. Package SW-281 PIN Ceramic GaAs DPDT Switch SW-281 V 2.00 Typical Performance Truth Table** INSERTION LOSS Control Input 2.0 +25°C 1.5 A Hi Low + 85°C 1.0 -55°C 0.5 .0 0 1 2 3 4 5 FREQUENCY (GHz) ISOLATION 80 70 60 50 40 30 20 0 1 2 3 4 5 FREQUENCY (GHz) VSWR 2.0 1.8 1.6 1.4 1.2 1.0 0 1 2 3 4 5 FREQUENCY (GHz) Schematic RF3 GND GND RF5 GND GND RF1 RF6 GND GND GND GND ORIENTATION TAB RF2 A B RF4 B Low Hi Condition RF1 to RF2 RF3 ON OFF OFF ON of Switch RF6 to RF4 RF5 ON OFF OFF ON