switches - smt 10 10 - 96 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com hmc234c8 gaas mmic smt high isolation spdt switch, dc - 8 ghz v03.1105 general description features functional diagram the hmc234c8 is a broadband high isolation non- refl ective gaas mesfet spdt switch in a non- hermetic surface mount ceramic package. covering dc to 8 ghz, the switch features >52 db isolation up to 2 ghz and >38 db isolation up to 8 ghz. the switch operates using complementary negative control voltage logic lines of -5/0v and requires no bias supply. this product is an excellent pin-for-pin replacement to the smdi ssw124. isolation: 52 db @ 2 ghz 40 db @ 6 ghz insertion loss: 1.6 db typical @ 6 ghz non-refl ective design surface mount ceramic package electrical specifi cations, t a = +25 c, with 0/-5v control, 50 ohm system typical applications the hmc234c8 is ideal for: ? telecom infrastructure ? microwave radio & vsat ? military radios, radar & ecm ? test instrumentation parameter frequency min. typ. max. units insertion loss dc - 2.0 ghz dc - 6.0 ghz dc - 8.0 ghz 1.4 1.6 2.1 1.7 1.9 2.4 db db db isolation dc - 2.0 ghz dc - 6.0 ghz dc - 8.0 ghz 47 35 33 52 40 38 db db db return loss on state dc - 2.0 ghz dc - 8.0 ghz 15 12 db db return loss rf1, rf2 off state dc - 2.0 ghz dc - 6.0 ghz dc - 8.0 ghz 14 9 6 db db db input power for 1 db compression 0.5 - 8.0 ghz 22 26 dbm input third order intercept (two-tone input power= +7 dbm each tone, 1 mhz tone separation) 0.5 - 8.0 ghz 40 46 dbm switching characteristics trise, tfall (10/90% rf) ton, toff (50% ctl to 10/90% rf) dc - 8.0 ghz 3 5 ns ns
switches - smt 10 10 - 97 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com input third order intercept point return loss 0.1 and 1 db input compression point insertion loss isolation -5 -4 -3 -2 -1 0 012345678 + 25c + 85c - 40c insertion loss (db) frequency (ghz) -80 -70 -60 -50 -40 -30 -20 -10 0 012345678 rf1 rf2 isolation (db) frequency (ghz) -30 -25 -20 -15 -10 -5 0 012345678 rfc rf1, rf2 on rf1, rf2 off return loss (db) frequency (ghz) 15 20 25 30 35 012345678 1 db compression point 0.1 db compression point input p1db (dbm) frequency (ghz) 30 35 40 45 50 55 60 012345678 + 25c + 85c - 40c input ip3 (dbm) frequency (ghz) hmc234c8 gaas mmic smt high isolation spdt switch, dc - 8 ghz v03.1105
switches - smt 10 10 - 98 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com truth table absolute maximum ratings control voltages outline drawing control input signal path state a b rfc to rf1 rfc to rf2 high low on off low high off on state bias condition low 0 to -0.2v @ 10 ua max. high -5v @ 10 ua typ. to -7v @ 45 ua typ. rf input power (vctl= -5v) (0.5 - 8 ghz) +30 dbm (@ +50 c) control voltage range (a & b) +1.0v to -7.5 vdc channel temperature 150 c thermal resistance 94 c/w storage temperature -65 to +150 c operating temperature -40 to +85 c esd sensitivity (hbm) class 1a notes: 1. package body material: white alumina 92% 2. lead, package bottom material: copper 3. plating: electrolytic gold 100-200 microinches, over electrolytic nickel 100-250 microinches. 4. dimensions are in inches [millimeters]. 5. package length and width dimensions do not include lid seal protrusion .005 per side. 6. all ground leads and ground paddle must be soldered to pcb rf ground. caution: do not hot switch power levels greater than +26 dbm (vctl = 0/-5 vdc). electrostatic sensitive device observe handling precautions hmc234c8 gaas mmic smt high isolation spdt switch, dc - 8 ghz v03.1105
switches - smt 10 10 - 99 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com pin descriptions suggested driver circuit pin number function description interface schematic 1, 3, 4 gnd package bottom must also be connected to pcb rf ground. 2, 5, 8 rfc, rf1, rf2 this pin is dc coupled and matched to 50 ohm. blocking capacitors are required if rf line potential is not equal to 0v. 6 b see truth table and control voltage table. 7 a see truth table and control voltage table. hmc234c8 gaas mmic smt high isolation spdt switch, dc - 8 ghz v03.1105
switches - smt 10 10 - 100 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com evaluation pcb the circuit board used in the fi nal application should be generated with proper rf circuit design tech- niques. signal lines at the rf port should have 50 ohm impedance and the package ground leads and package bottom should be connected directly to the ground plane similar to that shown above. the eval- uation circuit board shown above is available from hittite microwave corporation upon request. item description j1 - j3 pcb mount sma rf connector j4 - j6 dc pin u1 hmc234c8 spdt switch pcb [2] 105707 evaluation pcb [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 hmc234c8 gaas mmic smt high isolation spdt switch, dc - 8 ghz list of materials for evaluation pcb 105771 [1] v03.1105
switches - smt 10 10 - 101 for price, delivery, and to place orders, please contact hittite microwave corporation: 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com notes: hmc234c8 gaas mmic smt high isolation spdt switch, dc - 8 ghz v03.1105
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