cranfield innovation centre, university way, cranfield technology park, cranfield, bedfordshire, mk43 0bt, united kingdom telephone : #44 (0)1234 756034 e - ma il : enquiries@smslimited.co.uk fax: #44 (0) 1234 756035 web page : www.smslimited.co.uk july 00/2 all specifications subject to change with out notice description: the sms - 331 - 00dt range of sp3t pin diode switches are packaged in miniature, silver plated housings with sma connectors. the sma connectors can be removed to allow direct integration into microstrip circuits if requi red and all units contain ttl compatible drivers. ports j2, j3 and j4 are internally terminated to maintain vswr when the switch is isolating. optional surface finish is available, see note below for options. specifications: (indicated values @ +25 c) frequency range (ghz) max insertion loss (db) max vswr (ratio) min isolation (db) max switching speed (ns) max power peak/cw (mw) part number 0.5 ? 2.0 1.6 1.5:1 50 30 100 sms - 331 - 01dt 0.5 ? 6.0 2.1 1.6:1 50 30 100 sms - 331 - 02dt 6.0 ? 12.0 2.8 1.7:1 60 30 100 sms - 331 - 03dt 12.0 ? 18.0 3.4 1.9:1 55 30 100 sms - 331 - 04dt 6.0 ? 18.0 3.4 1.9:1 55 30 100 sms - 331 - 05dt 0.5 ? 18.0 3.4 1.9:1 55 30 100 sms - 331 - 06dt notes: 1. power supplies: +5v @ 100ma max, - 5v @ 50ma max. 2. total switching time is defined as 50% ttl to 10/90% detected rf. 3. 3 individual ttl compatible control lines are provided. ttl ?0? = low loss, ttl?1? = isolation. 4. ttl control voltage should be = or < positive supply voltage at all times. 5. operating temperature range ? 40 to +85 c. storage temperature range ? 55 to +125 c. 6. third angle projection, all dimensions in mm. 7. port j1 = rf common , port j2 = rf input/output, port j3 = rf input/output, port j4 = rf input/output. 8. options: add the following identifiers as suffixes to the part numbe rs above, i.e. sms - 331 - 01dt p . p = finish matt black paint to dtd5555a. the switch is available without integral drivers to allow users to externally optimise bias levels. please consult the factory for detail information. please contact the factory for any custom requirements or applications assistance. sp3t pin diode switches 0.5 to 18.0ghz non - reflective features: removable sma connectors integral ttl compatible drivers internally terminated miniature outline very fast switching low loss and high isolation
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