switches - smt 8 8 - 184 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 hmc344lp3 / 344LP3E gaas mmic sp4t non-reflective switch, dc - 8.0 ghz v05.0505 general description features functional diagram the hmc344lp3 & hmc344LP3E are broadband non-re ective gaas mesfet sp4t switches in low cost leadless surface mount packages. covering dc to 8 ghz, this switch offers high isolation and low insertion loss and extends the frequency coverage of hittites sp4t switch product line. this switch also includes an on board binary decoder circuit which reduces the required logic control lines to two. the switch operates using a negative control voltage of 0/-5v, and requires a xed bias of -5v. broadband performance: dc - 8.0 ghz high isolation: 40 db@ 6 ghz low insertion loss: 1.8 db@ 6 ghz integrated 2:4 ttl decoder lp3 smt package electrical specifications, t a = +25 c, with 0/-5v control, 50 ohm system typical applications this switch is suitable for usage in dc - 8.0 ghz 50- ohm or 75-ohm systems: ? broadband ? fiber optics ? switched filter banks ? wireless below 8 ghz parameter frequency min. typ. max. units insertion loss dc - 2.0 ghz dc - 6.0 ghz dc - 8.0 ghz 1.6 1.8 2.1 2.0 2.2 2.5 db db db isolation dc - 2.0 ghz dc - 4.0 ghz dc - 6.0 ghz dc - 8.0 ghz 43 36 34 31 48 41 40 36 db db db db return loss on state dc - 2.0 ghz dc - 4.0 ghz dc - 6.0 ghz dc - 8.0 ghz 12 9 8 5 15 12 11 8 db db db db return loss off state dc - 8.0 ghz 7 10 db input power for 1 db compression 0.5 - 8.0 ghz 17 21 dbm input third order intercept (two-tone input power = +7 dbm each tone) 0.5 - 8.0 ghz 37 40 dbm switching characteristics trise, tfall (10/90% rf) ton, toff (50% ctl to 10/90% rf) dc - 8.0 ghz 35 150 ns ns
switches - smt 8 8 - 185 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 hmc344lp3 / 344LP3E input third order intercept point gaas mmic sp4t non-reflective switch, dc - 8.0 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. v05.0505 bias voltage & current control voltages state bias condition low -3v to 0 vdc @ 60 ua typical high -5 to -4.2 vdc @ 5 ua typical vee range = -5.0 vdc 10% vee (vdc) iee (typ.) (ma) iee (max.) (ma) -5.0 3.0 6.0 -5 -4 -3 -2 -1 0 0123456789 +25 c +85 c -40 c insertion loss (db) frequency (ghz) 35 36 37 38 39 40 41 42 43 44 45 123456789 rf1 rf2 rf3 rf4 input third order intercept (dbm) frequency (ghz) 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 23456789 1db compression point 0.1db compression point input compression point (dbm) frequency (ghz) -25 -20 -15 -10 -5 0 0123456789 rfc rf1,2,3,4 on rf1,2,3,4 off return loss (db) frequency (ghz) -70 -60 -50 -40 -30 -20 -10 0 012345678910 rf1 rf2 rf3 rf4 isolation (db) frequency (ghz)
switches - smt 8 8 - 186 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 outline drawing control input signal path state a b rfcom to: high high rf1 low high rf2 high low rf3 low low rf4 absolute maximum ratings bias voltage range (vee) -7.0 vdc control voltage range (a & b) vee -0.5v to +1.0 vdc channel temperature 150 c thermal resistance (insertion loss path) 143 c/w thermal resistance (terminated path) 1,030 c/w storage temperature -65 to +150 c operating temperature -40 to +85 c maximum input power +24 dbm esd sensitivity (hbm) class 1a electrostatic sensitive device observe handling precautions hmc344lp3 / 344LP3E gaas mmic sp4t non-reflective switch, dc - 8.0 ghz v05.0505 part number package body material lead finish msl rating package marking [3] hmc344lp3 low stress injection molded plastic sn/pb solder msl1 [1] 344 xxxx hmc344LP3E rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] 344 xxxx [1] max peak re ow temperature of 235 c [2] max peak re ow temperature of 260 c [3] 4-digit lot number xxxx package information notes: 1. leadframe material: copper alloy 2. dimensions are in inches [millimeters]. 3. lead spacing tolerance is non-cumulative 4. pad burr length shall be 0.15mm maximum. pad burr height shall be 0.05mm maximum. 5. package warp shall not exceed 0.05mm. 6. all ground leads and ground paddle must be soldered to pcb rf ground. 7. refer to hittite application note for suggested pcb land pattern.
switches - smt 8 8 - 187 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 number function description interface schematic 1, 4, 9, 12, 15 rf4, rf3, rf2, rf1, rfc this pin is dc coupled and matched to 50 ohm. blocking capacitors are required if rf line potential is not equal to 0v. 2, 3, 10, 11, 13 n/c this pin should be connected to pcb rf ground to maximize isolation. 5, 14, 16 gnd package bottom has exposed metal paddle that must also be connected to pcb rf ground. 6 vee supply voltage -5v 10% 7 ctlb see truth table and control voltage table. 8 ctla see truth table and control voltage table. pin descriptions hmc344lp3 / 344LP3E gaas mmic sp4t non-reflective switch, dc - 8.0 ghz v05.0505
switches - smt 8 8 - 188 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 ttl interface circuit hmc344lp3 / 344LP3E gaas mmic sp4t non-reflective switch, dc - 8.0 ghz v05.0505
switches - smt 8 8 - 189 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 nal application should be generated with proper rf circuit design techniques. signal lines at the rf 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. the evaluation circuit board shown above is available from hittite microwave corporation upon request. list of materials for evaluation pcb 105311 [1] item description j1 - j7 pcb mount sma rf connector j8 - j11 dc pin c1 - c7 100 pf capacitor, 0402 pkg. c8 10k pf capacitor, 0603 pkg. u1 hmc344lp3 / hmc344LP3E sp4t switch pcb [2] 104708 evaluation pcb 1.29x1.55 [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 hmc344lp3 / 344LP3E gaas mmic sp4t non-reflective switch, dc - 8.0 ghz v05.0505
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