15 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 - multi-throw - s mt 15 - 1 HMC344LC3 gaas mmic sp4t non-reflective switch, dc - 8 ghz v02.1210 general description features functional diagram t he hmc 344 lc 3 is a broadband non-refective gaas me sf et sp4 t switch in a ceramic 3x3 mm leadless surface mount package. c overing d c to 8 g h z, this switch offers high isolation and low insertion loss. t he hmc 344 lc 3 includes an integrated binary decoder circuit which reduces the required logic control lines to two. t he switch operates using a negative control voltage of 0/-5v, and requires a fxed bias of -5v. simple external level shifting circuitry allows this switch to be controlled with most ttl / cmo s positive logic families. broadband performance: d c - 8 g h z i ntegrated 2:4 ttl decoder h igh i solation: 40 db@ 6 g h z l ow i nsertion l oss: 2 db@ 6 g h z non- r efective t opology electrical specifcations, t a = +25 c, with 0/-5v control, 50 ohm system typical applications t he hmc 344 lc 3 is ideal for: ? broadband, military, radar & ecm ? fiber optics ? switched filter banks ? wireless below 8 ghz ? test instrumentation parameter frequency m in. t yp. m ax. u nits i nsertion l oss d c - 2.0 g h z d c - 6.0 g h z d c - 8.0 g h z 1.6 2.0 2.5 2.0 2.8 3.0 db db db i solation d c - 2.0 g h z d c - 4.0 g h z d c - 6.0 g h z d c - 8.0 g h z 43 35 32 30 50 45 45 40 db db db db r eturn l oss o n state d c - 2.0 g h z d c - 4.0 g h z d c - 6.0 g h z d c - 8.0 g h z 15 12 12 12 17 16 16 17 db db db db r eturn l oss o ff state d c - 8.0 g h z 12 15 db i nput power for 0.1 db c ompression 0.5 - 8.0 g h z 22 26 dbm i nput t hird o rder i ntercept ( t wo- t one i nput power = +7 dbm e ach t one) 0.5 - 8.0 g h z 43 dbm switching c haracteristics t ri s e , tfa ll (10/90% r f) t o n, t o ff (50% ctl to 10/90% r f) d c - 8.0 g h z 20 70 ns ns
15 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 - multi-throw - s mt 15 - 2 HMC344LC3 input third order intercept point gaas mmic sp4t non-reflective switch, dc - 8 ghz return loss 0.1 and 1 db input compression point insertion loss vs. temperature isolation * isolation is recorded above insertion loss & measured at output of switch. v02.1210 bias voltage & current control voltages state bias c ondition l ow -3v to 0 vdc @ 60 a t ypical h igh -5 to -4.2 vdc @ 5 a t ypical vee r ange = -5.0 vdc 10% vee (vdc) i ee ( t yp.) (ma) i ee ( m ax.) (ma) -5.0 3.0 6.0 -5 -4 -3 -2 -1 0 0 1 2 3 4 5 6 7 8 9 +25 c +85 c -40 c insertion loss (db) frequency (ghz) 35 37 39 41 43 45 47 49 0 1 2 3 4 5 6 7 8 9 rf1 rf2 rf3 rf4 input third order intercept (dbm) frequency (ghz) 18 20 22 24 26 28 30 32 2 3 4 5 6 7 8 9 1.0 db 0.1 db input compression point (dbm) frequency (ghz) -25 -20 -15 -10 -5 0 0 1 2 3 4 5 6 7 8 9 rfc rf1,2,3,4 on rf1,2,3,4 off return loss (db) frequency (ghz) -70 -60 -50 -40 -30 -20 -10 0 0 1 2 3 4 5 6 7 8 9 10 rf1 rf2 rf3 rf4 isolation (db) frequency (ghz)
15 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 - multi-throw - s mt 15 - 3 truth table outline drawing c ontrol i nput signal path state a b r f c to: h igh h igh r f1 l ow h igh r f2 h igh l ow r f3 l ow l ow r f4 absolute maximum ratings bias voltage r ange (vee) -7.0 vdc control voltage range (a & b) vee -0.5v to +1.0 vdc c hannel t emperature 150 c t hermal r esistance ( i nsertion l oss path) 100 c / w t hermal r esistance ( t erminated path) 180 c / w storage t emperature -65 to +150 c o perating t emperature -40 to +85 c m aximum i nput power ( l ow l oss state) +28 dbm e sd sensitivity ( h b m ) c lass 1a electro s t a tic s e ns iti v e de v ice o bs er v e h and li ng p rec a utio ns n ote s: 1. pa c kag e b o dy m a teri a l : a lumi na 2. le ad and g rou nd padd le p l a ti ng: 30-80 microi n che s g ol d o v er 50 microi n che s mi n imum n ic k el . 3. d ime ns io ns a re i n i n che s [ millimeter s]. 4. le ad spa ci ng toler an ce i s n o n- cumul a ti v e . 5. pa c kag e w a r p s h a ll n ot e x cee d 0.05mm da tum - c - 6. a ll g rou nd le ads and g rou nd padd le mu s t b e s ol d ere d to p c b r f g rou nd. HMC344LC3 gaas mmic sp4t non-reflective switch, dc - 8 ghz v02.1210
15 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 - multi-throw - s mt 15 - 4 pin number function description i nterface schematic 1, 4, 9, 12, 15 r f4, r f3, r f2, r f1, r f c t his pin is d c coupled and matched to 50 o hm. blocking capacitors are required if r f line potential is not equal to 0v. 2, 3, 5, 10, 11, 14, 16 gnd package bottom has exposed metal paddle that must also be connected to p c b r f ground. 6 vee supply voltage -5v 10% 7 ctl b see truth table and control voltage table. 8 ctl a see truth table and control voltage table. 13 n/ c t his pin should be connected to p c b r f ground to maximize isolation. pin descriptions HMC344LC3 gaas mmic sp4t non-reflective switch, dc - 8 ghz v02.1210
15 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 - multi-throw - s mt 15 - 5 ttl interface circuit HMC344LC3 gaas mmic sp4t non-reflective switch, dc - 8 ghz v02.1210
15 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 - multi-throw - s mt 15 - 6 evaluation pcb t he circuit board used in the application should be generated with proper r f circuit design tech - niques. signal lines at the r f port should have 50 ohm impedance and the package ground leads and backside ground slug should be connected directly to the ground plane similar to that shown above. t he evaluation circuit board shown above is available from h ittite m icrowave c orporation upon request. list of materials for evaluation pcb 105311 [1] i tem description j1 - j7 p c b m ount s m a r f c onnector j8 - j11 d c pin c 1 - c 5 0 r esistor, 0402 pkg. [3] c 6 1000 pf c apacitor, 0402 pkg. u 1 hmc 344 lc 3 p c b [2] 104708 e valuation p c b 1.29x1.55 [1] r eference this number when ordering complete evaluation p c b [2] c ircuit board m aterial: r ogers 4350 [3] select and replace with a suitable capacitor value for applicable operating frequency range. HMC344LC3 gaas mmic sp4t non-reflective switch, dc - 8 ghz v02.1210
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