switches - smt 8 8 - 160 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 hmc321lp4 / 321LP4E gaas mmic sp8t non-reflective positive control switch, dc* - 8.0 ghz v03.0805 general description features functional diagram the hmc321lp4 & hmc321LP4E are broadband non- re ective gaas mesfet sp8t switches in low cost leadless surface mount packages. covering dc to 8 ghz, this switch offers high isolation and low inser- tion loss. this switch also includes an on board binary decoder circuit which reduces the required logic con- trol lines to three. the switch operates using a positive control voltage of 0/+5 volts, and requires a xed bias of +5v. this switch is suitable for usage in 50-ohm or 75-ohm systems. broadband performance: dc - 8.0 ghz high isolation: >30 db@ 6 ghz low insertion loss: 2.5 db@ 6 ghz integrated positve supply 3:8 ttl decoder 4x4 mm 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 * dc blocking capacitors are required at ports rfc and rf1, 2, 3, 4, 5, 6, 7, 8. their value will determine the lowest transmission frequency. parameter frequency min. typ. max. units insertion loss dc - 2.0 ghz dc - 4.0 ghz dc - 8.0 ghz 2.3 2.5 2.7 2.7 2.9 3.1 db db db isolation dc - 2.0 ghz dc - 4.0 ghz dc - 6.0 ghz dc - 8.0 ghz 35 30 25 20 40 35 30 25 db db db db return loss on state dc - 4.0 ghz dc - 8.0 ghz 8 7 12 10 db db return loss (rf1 - rf8) off state 2.0 - 8.0 ghz 7 12 db input power for 1 db compression 0.5 - 8.0 ghz 19 23 dbm input third order intercept (two-tone input power = +7 dbm each tone, 1 mhz spacing) 0.5 - 8.0 ghz 33 40 dbm switching characteristics trise, tfall (10/90% rf) ton, toff (50% ctl to 10/90% rf) dc - 8.0 ghz 50 150 ns ns
switches - smt 8 8 - 161 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 vs. temperature isolation hmc321lp4 / 321LP4E gaas mmic sp8t non-reflective positive control switch, dc* - 8.0 ghz v03.0805 -5 -4 -3 -2 -1 0 0123456789 +25 c -40 c +85 c insertion loss (db) frequency (ghz) 30 35 40 45 50 12345678 input third order intercept (dbm) frequency (ghz) 10 15 20 25 30 12345678 0.1db compression point 1db compression point input compression point (dbm) frequency (ghz) -25 -20 -15 -10 -5 0 0123456789 rfc rf1-8 on rf1-8 off return loss (db) frequency (ghz) -70 -60 -50 -40 -30 -20 -10 0 0123456789 rf1 rf2 rf3 rf4 rf5 rf6 rf7 rf8 isolation (db) frequency (ghz)
switches - smt 8 8 - 162 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 bias voltage & current control voltages note: dc blocking capacitors are required at ports rfc and rf1, 2, 3, 4, 5, 6, 7, 8. their value will determine the lowest transmission frequency. vdd range = +5.0 vdc 10% vdd (vdc) idd (typ.) (ma) idd (max.) (ma) +5.0 5.0 9.0 state bias condition low 0 to +0.8 vdc @ 5 ua typical high +2.0 to +5.0 vdc @ 25 ua typical control input signal path state ab c rfcom to: low low low rf1 high low low rf2 low high low rf3 high high low rf4 low low high rf5 high low high rf6 low high high rf7 high high high rf8 hmc321lp4 / 321LP4E gaas mmic sp8t non-reflective positive control switch, dc* - 8.0 ghz v03.0805
switches - smt 8 8 - 163 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 absolute maximum ratings outline drawing bias voltage range (port vdd) +7.0 vdc control voltage range (a, b, & c) -0.5v to vdd +1.0 vdc storage temperature -65 to +150 c operating temperature -40 to +85 c maximum input power vdd = +5v +26 dbm esd sensitivity (hbm) class 1a electrostatic sensitive device observe handling precautions hmc321lp4 / 321LP4E gaas mmic sp8t non-reflective positive control switch, dc* - 8.0 ghz v03.0805 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 land pattern. part number package body material lead finish msl rating package marking [3] hmc321lp4 low stress injection molded plastic sn/pb solder msl1 [1] h321 xxxx hmc321LP4E rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] h321 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
switches - smt 8 8 - 164 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, 3, 5, 7, 12, 14, 16, 18, 21, 23 gnd package bottom has exposed metal paddle that must also be connected to pcb rf ground. 2, 4, 6, 13, 15, 17, 19, 22, 24 rf1 - rf8 & rfc this pin is dc coupled and matched to 50 ohm. blocking capacitors are required. 8 vdd supply voltage +5v 10% 9 ctlc see truth table and control voltage table. 10 ctlb see truth table and control voltage table. 11 ctla see truth table and control voltage table. 20 n/c this pin should be connected to pcb rf ground to maximize isolation. pin descriptions hmc321lp4 / 321LP4E gaas mmic sp8t non-reflective positive control switch, dc* - 8.0 ghz v03.0805
switches - smt 8 8 - 165 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. item description j1 - j9 pcb mount sma rf connector j10 - j14 dc pin c1 - c9 100 pf capacitor, 0402 pkg. u1 hmc321lp4 / hmc321LP4E sp8t switch pcb [2] 104687 evaluation pcb 1.73 x 1.46 [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 hmc321lp4 / 321LP4E gaas mmic sp8t non-reflective positive control switch, dc* - 8.0 ghz v03.0805 list of materials for evaluation pcb 104769 [1]
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