11 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com switche s - spd t - sm t 11 - 1 HMC944LC4 general description features functional diagram t he h m c 944l c 4 is a broadband refective gaas m e sf et sp4 t switch in a compact 4x4 mm ceramic package. c overing 23 to 30 g h z, this switch offers high isolation and low insertion loss. t he h m c 944l c 4 is controlled with 0/ -3v logic, exhibits fast switching speed and consumes much less d c current than pin diode based solutions. w ith its compact form factor, the h m c 944l c 4 is ideal for microwave radio as well as sa tc om and sensor applications. t he h m c 944l c 4 is housed in a leadless 4x4 mm sm t package which is compatible with surface mount manufacturing tech - niques. broadband performance: 23 - 30 g h z h igh i solation: 35 db i nsertion loss: 2.8 db 24 lead 4x4mm sm t package: 16mm2 electrical specifcations, t a = +25 c, with 0/-3v control, 50 ohm system typical applications t he h m c 944l c 4 is ideal for: ? t elecom i nfrastructure ? microwave radio & vsa t ? military & space h ybrids ? t est i nstrumentation ? sa tc om & sensors gaas mmic sp4t reflective switch, 23 - 30 ghz v02.1110 parameter frequency min. t yp. max. units i nsertion loss (rf c to rf1, rf4) (rf c to rf2, rf3) 23 - 30 g h z 2.8 3.5 4 5 db db i solation (rf i n to rf1 - rf4) 23 - 30 g h z 30 35 db return loss [1] on state 23 - 30 g h z 10 db return loss [2] off state 23 - 30 g h z 4 db i nput power for 0.1 db c ompression 23 - 30 g h z 17 dbm i nput t hird order i ntercept ( t wo- t one i nput power= 0 dbm e ach t one) 23 - 30 g h z 30 dbm switching c haracteristics tr i s e , tfall (10/90% rf) ton, toff (50% ct l to 10/90% rf) 23 - 30 g h z 23 - 30 g h z 15 53 ns ns [1] return loss with switch path in insertion loss state. [2] return loss with switch path in isolation state.
11 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com switche s - spd t - sm t 11 - 2 0.1 db input compression point return loss on state [2] return loss off state insertion loss rfin to rf1, rf4 vs. temperature insertion loss rfin to rf2, rf3 vs. temperature isolation [1] HMC944LC4 v02.1110 gaas mmic sp4t reflective switch, 23 - 30 ghz -5 -4 -3 -2 -1 0 23 24 25 26 27 28 29 30 +25 c +85 c -40 c insertion loss (db) frequency (ghz) -5 -4 -3 -2 -1 0 23 24 25 26 27 28 29 30 +25 c +85 c -40 c insertion loss (db) frequency (ghz) -40 -35 -30 -25 -20 -15 -10 -5 0 23 24 25 26 27 28 29 30 rfc rf1 rf2 rf3 rf4 isolation (db) frequency (ghz) -80 -70 -60 -50 -40 -30 -20 -10 0 23 24 25 26 27 28 29 30 rf1 rf2 rf3 rf4 isolation (db) frequency (ghz) -20 -15 -10 -5 0 23 24 25 26 27 28 29 30 rfc rf1 rf2 rf3 rf4 isolation (db) frequency (ghz) 10 15 20 25 30 23 24 25 26 27 28 29 30 input compression point (dbm) frequency (ghz) [1] return loss with switch path in insertion loss state. [2] return loss with switch path in isolation state.
11 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com switche s - spd t - sm t 11 - 3 HMC944LC4 v02.1110 gaas mmic sp4t reflective switch, 23 - 30 ghz bias voltage & current control voltages absolute maximum ratings v c (v) ic (a) v c 1 = -3v ic 1 <10 a v c 2 = -3v ic 2 <10 a v c 3 = -3v ic 3 <10 a v c 4 = -3v ic 4 <10 a state bias c ondition low +1v to -0.25v h igh -2.7v to -5v, < 10 a c ontrol voltage range (v c 1, v c 2, v c 3, v c 4) <+2v and >-5v maximum i nput power 2 w (33 dbm) c hannel t emperature 150 c t hermal resistance c hannel to die bottom ( i nsertion loss path) 12 c / w storage t emperature -65 to +150 c operating t emperature -40 to +85 c e sd sensitivity ( h bm) c lass 1b truth table vc1 vc2 vc3 vc4 rfin to: -3v 0v 0v 0v rf1 0v -3v 0v 0v rf2 0v 0v -3v 0v rf3 0v 0v 0v -3v rf4 e l ect ros t a tic s e ns iti v e d e v ice obs e rv e h andl i ng pr ec au ti ons outline drawing no tes: 1. pa c kag e body ma te r i al: alum i na 2. l e ad and ground paddl e pla ti ng: 30-80 m ic ro i n che s gold ov e r 50 m ic ro i n che s m i n i mum n ic k e l. 3. d i m e ns i ons ar e i n i n che s [m i ll i m ete rs]. 4. l e ad spa ci ng t ol e ran ce i s non- c umula ti v e 5. pa c kag e w arp s h all no t e x cee d 0.05mm da t um - c - 6. all ground l e ads and ground paddl e mus t b e sold e r e d to p c b rf ground. 7. c lass i f ie d as mo i s t ur e s e ns iti v it y l e v e l (msl) 1.
11 for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com switche s - spd t - sm t 11 - 4 HMC944LC4 v02.1110 gaas mmic sp4t reflective switch, 23 - 30 ghz pin descriptions pin number function description i nterface schematic 1, 2, 6, 8, 23 n/ c t hese pins are not connected internally; however, all data shown herein was measured with these pins connected to rf/d c ground externally. 3, 5, 9, 11, 13, 15, 16, 18, 20, 22 gnd t hese pins and the exposed ground paddle must be connected to rf/d c ground. 4, 10, 14, 17, 21 r i n, rf1, rf2, rf3, rf4 t hese pads are d c coupled (to gnd) and matched to 50 ohms. 7, 12, 19, 24 v c 1, v c 2, v c 3, v c 4 see t ruth t able evaluation pcb list of materials for evaluation pcb 128253 [1] i tem description j1 - j5 p c b mount k c onnector c 6 - c 9 1000 pf c apacitor, 0402 pkg. u1 h m c 944l c 4 switch p c b [2] 128251 e valuation p c b [1] reference this number when ordering complete evaluation p c b [2] c ircuit board material: rogers 4350 or arlon fr4 t he circuit board used in the application should use rf circuit design techniques. signal lines should have 50 ohm impedance while the package ground leads and exposed paddle should be connected directly to the ground plane similar to that shown. a sufficient number of via holes should be used to connect the top and bottom ground planes. t he evaluation board should be mounted to an appropriate heat sink. t he evaluation circuit board shown is available from h ittite upon request.
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