switches - smt 8 8 - 146 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 general description features functional diagram the hmc276qs24 & hmc276qs24e are low-cost 4x2 switch matrix in a 24-lead qsop package for use in rf multiplexing applications from 700 to 3000 mhz. a positive voltage controlled 4 bit decoder is integrated on the switch. the switch may be used in either 75 ohm or 50 ohm systems. both switch outputs (op1 & op2) can independently select any of the four inputs (hh, hl, vh, vl) or simul- taneously select the same inputs. note that the switch is bi-directional and input/output functionality may be interchanged. the recommended loading impedance is 62.5 ohms on each input (hh, hl, vh, vl) and 75 ohms on each output (op1 & op2). all data pre- sented was measured in a 50 ohm (input/output) system. available as lead free 4x2 switch matrix using one ic 4x4 switch matrix using two ics integrated 4 bit decoder single positive supply: vdd = +5v electrical specifications, t a = +25 c, vdd= +5v, 50 ohm system typical applications 4x2 switch matrix for 0.7 - 3.0 ghz applications: ? cable modem ? catv ? cellular systems ? dbs parameter frequency min. typ. max. units insertion loss 700 - 3000 mhz 6.0 7.0 db isolation 700 - 950 mhz 950 - 1450 mhz 1450 - 2150 mhz 2150 - 3000 mhz 36 32 26 40 36 31 db db db db return loss (input; vl, hl, vh, hh) 700 - 3000 mhz 12 16 db return loss (output; op1, op2) 700 - 3000 mhz 11 15 db output ip3 700 - 3000 mhz 31 37 dbm input power for 1 db compression 700 - 3000 mhz 22 26 dbm switching speed trise / tfall (10/90% rf) ton / toff (50% ctl to 10/90% rf) 700 - 3000 mhz 140 350 ns ns see op1/2 isolation tables gaas mmic 4x2 switch matrix, 0.7 - 3.0 ghz v05.1105 hmc276qs24 / 276qs24e
switches - smt 8 8 - 147 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 return loss typical insertion loss vs. temperature insertion loss on op1 insertion loss on op2 op1 isolation 950 - 1450 mhz op2 isolation 950 - 1450 mhz input to output state interfering signal state min. (db) typ. (db) hl to op1 vl to op1 all other states 9 all other states 36 40 38 >43 vl to op1 all other states all states 40 >43 vh to op1 all other states all states 40 >43 hh to op1 vl to op1 vl to op1 hl to op1 all other states 13 16 15 all other states 39 40 39 40 41 42 41 >43 input to output state interfering signal state min. (db) typ. (db) hl to op2 all states all states 40 >43 vh to op2 hl to op2 hl to op2 vl to op2 all other states 10 6 2 all other states 38 39 39 40 40 41 41 >43 vl to op2 hl to op2 all other states 9 all other states 36 40 38 >43 hh to op2 all states all states 40 >43 gaas mmic 4x2 switch matrix, 0.7 - 3.0 ghz hmc276qs24 / 276qs24e -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 0.5 1 1.5 2 2.5 3 3.5 4 vl to op1 (state 1) vl to op1 (state 2) vh to op1 (state 5) vh to op1 (state 6) hl to op1 (state 11) hl to op1 (state 12) hh to op1 (state 15) hh to op1 (state 16) insertion loss (db) frequency (ghz) -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 0.5 1 1.5 2 2.5 3 3.5 4 vl to op2 (state 1) vl to op2 (state 5) vh to op2 (state 2) vh to op2 (state 6) hl to op2 (state 11) hl to op2 (state 15) hh to op2 (state 12) hh to op2 (state 16) insertion loss (db) frequency (ghz) -25 -20 -15 -10 -5 0 0.5 1 1.5 2 2.5 3 3.5 4 input rl, input selected input rl, input deselected output rl return loss (db) frequency (ghz) -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 0.5 1 1.5 2 2.5 3 3.5 4 +25 c +85 c -40 c insertion loss (db) frequency (ghz) v05.1105
switches - smt 8 8 - 148 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 * isolation is recorded above insertion loss & measured at output of switch. isolation when vl is connected to op1* isolation when hh is connected to op1* isolation when hl is connected to op1* isolation when vh is connected to op1* isolation when hl is connected to op2* isolation when vl is connected to op2* -60 -50 -40 -30 -20 -10 0 0.5 1 1.5 2 2.5 3 3.5 4 vl to op1 (state 16) vh to op1 (state 16) vl to op1 (state 13) vh to op1 (state 14) hl to op1 (state 16) hl to op1 (state 15) isolation (db) frequency (ghz) -60 -50 -40 -30 -20 -10 0 0.5 1 1.5 2 2.5 3 3.5 4 hl to op1 (state 3) vh to op1 (state 2) hh to op1 (state 1) hh to op1 (state 4) vh to op1 (state 1) hl to op1 (state 1) isolation (db) frequency (ghz) -60 -50 -40 -30 -20 -10 0 0.5 1 1.5 2 2.5 3 3.5 4 vh to op2 (state 1) vh to op2 (state 5) hh to op2 (state 1) hh to op2 (state 13) hl to op2 (state 1) hl to op2 (state 9) isolation (db) frequency (ghz) -60 -50 -40 -30 -20 -10 0 0.5 1 1.5 2 2.5 3 3.5 4 hh to op2 (state 11) hh to op2 (state 15) vh to op2 (state 7) vh to op2 (state 11) vl to op2 (state 11) vl to op2 (state 3) isolation (db) frequency (ghz) -60 -50 -40 -30 -20 -10 0 0.5 1 1.5 2 2.5 3 3.5 4 hh to op1 (state 8) hl to op1 (state 6) hl to op1 (state 7) vl to op1 (state 6) vl to op1 (state 5) hh to op1 (state 6) isolation (db) frequency (ghz) -60 -50 -40 -30 -20 -10 0 0.5 1 1.5 2 2.5 3 3.5 4 hh to op1 (state 11) hh to op1 (state 12) vh to op1 (state 10) vl to op1 (state 11) vl to op1 (state 9) vh to op1 (state 11) isolation (db) frequency (ghz) gaas mmic 4x2 switch matrix, 0.7 - 3.0 ghz hmc276qs24 / 276qs24e v05.1105
switches - smt 8 8 - 149 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 isolation when vh is connected to op2* isolation when hh is connected to op2* output third order intercept point * isolation is recorded above insertion loss & measured at output of switch. path state f1 pout (dbm) pout intermod (dbm) imr (dbc) output ip3 (dbm) vl to op1 1 -12 -106 94 35 vl to op2 1 -12 -114 102 39 hl to op1 11 -12 -108 96 36 hl to op2 11 -12 -110 98 37 vh to op1 6 -12 -115 103 39.5 vh to op2 6 -12 -115 103 39.5 hh to op1 16 -12 -116 104 40 hh to op2 16 -12 -114 102 39 test conditions temperature = +25 c f1 = 2150 (mhz): -12 dbm at the output f2 = 2151 (mhz): -12 dbm at the output vdd = +5v vctl low = 0v, high = +5v -60 -50 -40 -30 -20 -10 0 0.5 1 1.5 2 2.5 3 3.5 4 hl to op2 (state 12) hl to op2 (state 16) vh to op2 (state 8) vh to op2 (state 16) vl to op2 (state 16) vl to op2 (state 4) isolation (db) frequency (ghz) -60 -50 -40 -30 -20 -10 0 0.5 1 1.5 2 2.5 3 3.5 4 hh to op2 (state 14) hl to op2 (state 6) vl to op2 (state 2) vl to op2 (state 6) hh to op2 (state 6) hl to op2 (state 10) isolation (db) frequency (ghz) gaas mmic 4x2 switch matrix, 0.7 - 3.0 ghz hmc276qs24 / 276qs24e v05.1105
switches - smt 8 8 - 150 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 dc blocking and decoupling capacitors the hmc276qs24(e) requires dc blocks on all 6 rf ports (op1, op2, vl, hl, vh, hh). characterization on the hmc276qs24(e) was done using 0603 size 330pf capacitors on all rf ports. a 0.01f dc decoupling capacitor (0603 size) is recommended for the vdd pin. truth table control input output to input state rf path state state hv 1 tone 1 hv 2 tone 2 op1 op2 vl to op1 hl to op1 vh to op1 hh to op1 vl to op2 hl to op2 vh to op2 hh to op2 1 0 0 0 0 vl vl loss isol isol isol loss isol isol isol 2 0 0 0 1 vl vh loss isol isol isol isol isol loss isol 3 0 0 1 0 vl hl loss isol isol isol isol loss isol isol 4 0 0 1 1 vl hh loss isol isol isol isol isol isol loss 5 0 1 0 0 vh vl isol isol loss isol loss isol isol isol 6 0 1 0 1 vh vh isol isol loss isol isol isol loss isol 7 0 1 1 0 vh hl isol isol loss isol isol loss isol isol 8 0 1 1 1 vh hh isol isol loss isol isol isol isol loss 9 1 0 0 0 hl vl isol loss isol isol loss isol isol isol 10 1 0 0 1 hl vh isol loss isol isol isol isol loss isol 11 1 0 1 0 hl hl isol loss isol isol isol loss isol isol 12 1 0 1 1 hl hh isol loss isol isol isol isol isol loss 13 1 1 0 0 hh vl isol isol isol loss loss isol isol isol 14 1 1 0 1 hh vh isol isol isol loss isol isol loss isol 15 1 1 1 0 hh hl isol isol isol loss isol loss isol isol 16 1 1 1 1 hh hh isol isol isol loss isol isol isol loss control voltages hv1, tone1, hv2, tone2 bias voltage vdd range = +5.0 vdc 10 % vdd (vdc) idd (typ.) (ma) idd (max.) (ma) +5.0 1 1.5 state bias condition low (0) 0 to 0.8 vdc @ 5 a typical high (1) +2.0 to +5.0 vdc @ 25 a typical gaas mmic 4x2 switch matrix, 0.7 - 3.0 ghz hmc276qs24 / 276qs24e v05.1105
switches - smt 8 8 - 151 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 bias voltage range (vdd) +8.0 vdc control voltage range (all logic lines) vdd +0.5 to -0.2v vdc channel temperature 150 c thermal resistance 325 c/w storage temperature -65 to +150 c operating temperature -40 to +85 c maximum input power +23 dbm (700 - 2150 mhz) outline drawing notes: 1. leadframe material: copper alloy 2. dimensions are in inches [millimeters]. 3. dimension does not include moldflash of 0.15mm per side. 4. dimension does not include moldflash of 0.25mm per side. 5. all ground leads must be soldered to pcb rf ground. part number package body material leadframe plating msl rating package marking [3] hmc276qs24 low stress injection molded plastic silica and silicon impregnated sn/pb solder msl1 [1] hmc276 xxxx hmc276qs24e rohs-compliant low stress injection molded plastic silica and silicon impregnated 100% matte tin msl1 [2] hmc276 xxxx [1] max peak refl ow temperature of 235 c [2] max peak refl ow temperature of 260 c [3] 4-digit lot number xxxx package information gaas mmic 4x2 switch matrix, 0.7 - 3.0 ghz hmc276qs24 / 276qs24e v05.1105
switches - smt 8 8 - 152 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 the hmc276qs24e switch can operate as a 4x4 switch by connecting the 4 inputs of two switches directly together. the vl, vh, hl, and hh inputs of the fi rst switch should be connected to the second switch, as illustrated. mirror image switch performance can be realized by inverting the hv1 & hv2 logic control signals of one of the hmc276qs24e switches. the input loading impedance of two switches in parallel should be 31.25 ohms. the output loading impedance on each output should be 75 ohms. the interconnect rf line between the switchs inputs should be an rf trace with a characteristic impedance of 62.5 ohms. this will allow the switch to remain matched in all possible switch states. the hmc276qs24e does not provide output to output (op1 to op2) isolation. for this reason, it is recommended that external amplifi ers should be used at each output. the amplifi ers reverse isolation will provide output to output isolation, if this is necessary. each hmc276qs24e requires dc blocking capacitors on all rf input and output ports. switch application circuit for 4x4 switch matrix gaas mmic 4x2 switch matrix, 0.7 - 3.0 ghz hmc276qs24 / 276qs24e v05.1105
switches - smt 8 8 - 153 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 techniques. signal lines at the rf port should have 50 ohm impedance and the package ground leads should be connected directly to the ground plane similar to that shown above. a generous number of ground vias should be used to interconnect top/bottom ground planes. the evaluation circuit board shown above is available from hittite microwave corporation upon request. multi pin dc interface (j1) item description j2 - j7 pc mount sma rf connector j1 dc pin c1 - c6 100 pf capacitor, 0402 pkg. u1 hmc276qs24 / hmc276qs24e 4x2 switch matrix pcb [2] 102945 eval board [1] reference this number when ordering complete evaluation pcb [2] circuit board material: rogers 4350 pin line 1vdd 2hv1 3gnd 4hv2 5gnd 6tone1 7n/c 8n/c 9tone2 gaas mmic 4x2 switch matrix, 0.7 - 3.0 ghz hmc276qs24 / 276qs24e list of materials for evaluation pcb 102924 [1] v05.1105
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