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cht4699 - qdg ref. : dscht4699 - qdg2118 - 27 apr 12 1 / 12 specifications subject to change without notice united monolithic semiconductors s.a.s. bat. charmille - parc silic - 10, avenue du qubec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 36 - 44ghz variable attenuator gaas monolithic microwave ic description the cht4699 - qdg is a monolithic 36 - 44 ghz variable voltage attenuator. it is designed for a wide range of applications, from military to commercial communication systems. the circuit is manufactured with a mesfet process, 0. 7 m gate length, via holes throu gh the substrate, air bridges . main features main electrical characteristics tamb. = + 25c symbol parameter min typ max unit freq frequency range 36.0 44.0 ghz min att minimum attenuation with v1=v2= - 5v - 4 db dyn dynamic range of attenuation 30 db iip3 input ip3 all attenuation 27 dbm gnd gnd gnd rf in gnd nc v1 v2 nc nc nc nc gnd gnd gnd rf out gnd nc nc nc nc nc nc nc 1 3 4 2 6 5 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 - 40 - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 35 37.5 40 42.5 45 47.5 50 dbs21 (db) frequency (ghz) a b
cht4699 - qdg 36 - 44ghz variable attenuator ref. : dscht4699 - qdg2118 - 27 apr 12 2 / 12 specifications subject to change without notice bat. charmille - parc silic - 10, avenue du qub ec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 electrical characteristics tamb. = + 25c , symbol parameter min typ max unit freq f requency range 36 44 ghz min att. |s21 | (v1= - 5v;v2= - 5v) - 4 db dyn attenuation dynamic 30 db rlin input return loss (any attenuation) - 1 0 db rlout output return loss (any attenuation) - 10 db pin1db input 1db compression point (any attenuation) 20 dbm iip3 input 3 rd order intercept point (any attenuation) 27 dbm these values are representative of onboard measurements as defined on the drawing in paragraph "evaluation mother board". absolute maximum ratings (1) tamb.= + 25c symbol parameter values unit v 1 v1 control voltage - 6 to +0.6 v v 2 v2 control voltage - 6 to +0.6 v pin rf input power overdrive (2) +33 dbm ta operating temperature range - 40 to +85 c tstg storage temperature range - 55 to +150 c (1) operation of this device above anyone of these parameters may cause permanent damage. (2) duration < 1s. typical bias conditions tamb.= + 25c symbol pad n o parameter values unit v1 9 v1 control voltage - 5 to 0 v v2 10 v2 control voltage - 5 to 0 v for optimum linearity v1& v2 should be tuned in sequence.
36 - 44ghz variable attenuator cht4699 - qdg ref. : dscht4699 - qdg2118 - 27 apr 12 3 / 12 specifications subject to change without notice bat. charmille - parc silic - 10, avenue du qubec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 typical package sij parameters tamb.= +25c, v1= - 5v, v2= - 5v, minimum attenuation freq (ghz) s11 (db) phs11 () s 21 (db) phs 21 () s 12 (db) phs 12 () s22 (db) phs22 () 25 - 12.6 - 106 - 3.2 176 - 3.2 176 - 12.9 - 103 25.5 - 11.0 - 124 - 3.5 156 - 3.5 156 - 11.2 - 122 26 - 9.8 - 140 - 3.6 137 - 3.6 137 - 9.8 - 140 26.5 - 8.8 - 157 - 3.8 118 - 3.8 118 - 8.9 - 158 27 - 8.3 - 174 - 3.9 99 - 3.9 99 - 8.3 - 177 27.5 - 7.9 170 - 4.0 81 - 4.0 81 - 7.9 165 28 - 7.8 154 - 4.1 62 - 4.1 62 - 7.8 147 28.5 - 7.8 139 - 4.1 44 - 4.1 44 - 7.8 130 29 - 7.9 124 - 4.1 25 - 4.1 25 - 7.9 113 29.5 - 8.1 108 - 3.9 7 - 3.9 7 - 8.1 95 30 - 8.4 92 - 3.8 - 13 - 3.8 - 13 - 8.4 77 30.5 - 9.1 76 - 3.7 - 33 - 3.7 - 33 - 9.1 60 31 - 10.0 59 - 3.6 - 52 - 3.6 - 52 - 10.0 42 31.5 - 11.3 43 - 3.6 - 73 - 3.6 - 73 - 11.3 24 32 - 12.7 27 - 3.6 - 92 - 3.6 - 92 - 13.0 8 32.5 - 14.7 11 - 3.7 - 112 - 3.7 - 112 - 14.9 - 6 33 - 17.1 - 4 - 3.6 - 131 - 3.6 - 131 - 16.8 - 18 33.5 - 20.5 - 21 - 3.5 - 151 - 3.5 - 151 - 19.1 - 29 34 - 25.9 140 - 3.5 - 171 - 3.4 - 171 - 21.7 146 34.5 - 39.6 98 - 3.4 168 - 3.4 168 - 24.4 143 35 - 31.7 - 51 - 3.3 148 - 3.3 148 - 27.3 142 35.5 - 25.6 - 72 - 3.3 127 - 3.3 127 - 29.9 139 36 - 23.1 - 81 - 3.1 106 - 3.1 106 - 34.9 110 36.5 - 21.2 - 88 - 3.1 84 - 3.1 84 - 33.3 - 13 37 - 19.4 - 93 - 3.2 63 - 3.2 63 - 25.9 - 53 37.5 - 17.4 - 102 - 3.2 40 - 3.2 40 - 20.7 - 76 38 - 15.7 - 111 - 3.3 18 - 3.3 18 - 17.2 - 97 38.5 - 14.1 - 122 - 3.4 - 4 - 3.5 - 4 - 14.9 - 117 39 - 12.8 - 135 - 3.8 - 26 - 3.8 - 26 - 13.1 - 133 39.5 - 11.7 - 148 - 4.0 - 47 - 4.0 - 47 - 11.6 - 151 40 - 10.6 - 162 - 4.1 - 69 - 4.1 - 69 - 10.4 - 168 40.5 - 9.8 - 178 - 4.3 - 90 - 4.3 - 90 - 9.5 174 41 - 9.4 165 - 4.4 - 112 - 4.4 - 112 - 9.1 158 41.5 - 9.4 148 - 4.7 - 133 - 4.7 - 133 - 9.2 142 42 - 9.5 133 - 4.6 - 154 - 4.6 - 154 - 9.2 128 42.5 - 10.1 117 - 4.5 - 177 - 4.5 - 176 - 9.8 112 43 - 11.3 103 - 4.5 160 - 4.5 160 - 10.9 99 43.5 - 13.1 95 - 4.5 136 - 4.5 136 - 12.7 92 44 - 14.6 98 - 4.7 109 - 4.7 109 - 14.2 98 44.5 - 13.7 110 - 5.3 84 - 5.3 84 - 12.8 113 45 - 10.9 108 - 6.0 59 - 5.9 59 - 9.6 111 45.5 - 8.5 96 - 6.9 35 - 6.9 35 - 7.3 99 46 - 6.9 79 - 7.9 13 - 7.9 13 - 5.7 85 46.5 - 5.7 64 - 8.9 - 6 - 8.9 - 6 - 4.6 70 47 - 4.9 - 134 - 9.7 - 26 - 9.7 - 26 - 3.7 - 127 47.5 - 4.3 - 152 - 10.5 - 46 - 10.5 - 46 - 3.2 - 144 48 - 4.1 - 169 - 11.3 - 64 - 11.3 - 64 - 2.9 - 158 48.5 - 3.7 176 - 11.6 - 82 - 11.5 - 81 - 2.3 - 172 49 - 3.6 159 - 12.1 - 101 - 12.1 - 102 - 2.3 173 49.5 - 3.6 143 - 12.7 - 119 - 12.7 - 119 - 2.4 159 50 - 3.8 127 - 13.0 - 138 - 13.0 - 138 - 2.3 146 refer to the definition of sij reference planes section below
cht4699 - qdg 36 - 44ghz variable attenuator ref. : dscht4699 - qdg2118 - 27 apr 12 4 / 12 specifications subject to change without notice bat. charmille - parc silic - 10, avenue du qub ec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 typical package sij parameters tamb.= +25c, v1= 0v, v2= 0v, maximum attenuation freq (ghz) s11 (db) phs11 () s 21 (db) phs 21 () s 12 (db) phs 12 () s22 (db) phs22 () 25 - 12.5 - 150 - 29.2 178 - 29.1 178 - 12.7 - 153 25.5 - 12.2 - 161 - 29.3 162 - 29.3 162 - 12.6 - 165 26 - 12.0 - 173 - 29.1 142 - 29.2 142 - 12.4 - 177 26.5 - 11.8 176 - 29.3 125 - 29.2 125 - 12.3 171 27 - 11.8 165 - 29.2 107 - 28.9 107 - 12.3 158 27.5 - 11.9 153 - 29.2 88 - 29.2 88 - 12.4 145 28 - 12.0 142 - 29.4 71 - 29.4 71 - 12.6 132 28.5 - 12.3 131 - 29.1 53 - 29.1 53 - 12.8 120 29 - 12.7 121 - 29.1 36 - 29.1 35 - 13.1 108 29.5 - 13.0 111 - 29.5 18 - 29.4 18 - 13.4 95 30 - 13.4 101 - 29.3 2 - 29.2 2 - 13.9 84 30.5 - 14.1 90 - 28.9 - 15 - 29.0 - 16 - 14.3 72 31 - 14.8 80 - 29.2 - 33 - 29.2 - 33 - 15.1 60 31.5 - 15.8 71 - 29.2 - 50 - 29.1 - 50 - 16.0 49 32 - 16.8 65 - 29.3 - 66 - 29.2 - 66 - 17.2 39 32.5 - 17.8 59 - 29.2 - 83 - 29.3 - 83 - 18.5 30 33 - 18.9 55 - 29.3 - 98 - 29.2 - 99 - 19.7 24 33.5 - 20.0 53 - 29.4 - 118 - 29.5 - 117 - 20.9 19 34 - 20.9 - 125 - 29.8 - 131 - 29.7 - 131 - 21.5 - 161 34.5 - 21.1 - 124 - 29.6 - 148 - 29.7 - 148 - 22.3 - 164 35 - 21.1 - 122 - 29.7 - 166 - 29.4 - 165 - 23.4 - 163 35.5 - 20.6 - 120 - 30.1 177 - 29.9 176 - 24.0 - 159 36 - 19.7 - 121 - 30.9 156 - 30.7 156 - 24.1 - 152 36.5 - 19.1 - 127 - 31.6 144 - 31.8 145 - 23.9 - 146 37 - 18.8 - 130 - 31.9 129 - 32.1 129 - 22.7 - 144 37.5 - 17.9 - 134 - 32.3 112 - 32.3 112 - 21.3 - 146 38 - 17.2 - 139 - 33.7 97 - 33.5 94 - 20.0 - 149 38.5 - 16.3 - 146 - 34.1 80 - 34.1 79 - 18.4 - 154 39 - 15.6 - 154 - 35.9 70 - 35.8 70 - 17.2 - 160 39.5 - 15.0 - 161 - 36.4 55 - 37.0 55 - 16.2 - 168 40 - 14.3 - 169 - 38.6 45 - 38.6 44 - 15.1 - 176 40.5 - 13.7 - 178 - 39.3 28 - 39.2 32 - 14.2 176 41 - 13.0 174 - 43.1 32 - 42.9 27 - 13.2 169 41.5 - 12.4 165 - 46.0 55 - 45.2 43 - 12.5 161 42 - 11.6 156 - 41.5 55 - 41.7 55 - 11.3 154 42.5 - 10.7 145 - 38.8 49 - 39.0 48 - 10.3 143 43 - 9.9 133 - 36.4 30 - 37.0 35 - 9.5 131 43.5 - 9.3 120 - 35.7 13 - 36.1 13 - 8.7 120 44 - 8.9 106 - 35.0 - 11 - 34.6 - 10 - 8.2 107 44.5 - 8.8 95 - 35.4 - 36 - 35.4 - 36 - 7.8 97 45 - 8.4 83 - 38.0 - 63 - 37.5 - 58 - 7.2 86 45.5 - 8.1 72 - 39.6 - 61 - 39.0 - 67 - 6.9 76 46 - 7.5 60 - 40.9 - 76 - 39.7 - 77 - 6.3 66 46.5 - 7.0 50 - 42.3 - 76 - 42.3 - 81 - 5.8 56 47 - 6.4 - 143 - 43.4 - 71 - 42.4 - 68 - 5.2 - 136 47.5 - 6.0 - 158 - 40.3 - 87 - 40.9 - 78 - 4.7 - 150 48 - 5.7 - 171 - 39.9 - 90 - 41.0 - 82 - 4.3 - 162 48.5 - 5.2 176 - 38.0 - 105 - 37.8 - 103 - 3.7 - 172 49 - 5.0 161 - 38.9 - 119 - 38.2 - 126 - 3.5 174 49.5 - 4.8 146 - 38.2 - 135 - 37.9 - 138 - 3.4 162 50 - 4.7 132 - 37.7 - 160 - 38.4 - 159 - 3.2 149 refer to the definition of sij reference planes section below
36 - 44ghz variable attenuator cht4699 - qdg ref. : dscht4699 - qdg2118 - 27 apr 12 5 / 12 specifications subject to change without notice bat. charmille - parc silic - 10, avenue du qubec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 typical board measurements tamb.= +25c measurements in the package access planes gain versus c ontrol v oltage s11 versus c ontrol v oltage s22 versus c ontrol v oltage 1 - a : v1 = - 5v to 0v & v2= - 5v b : v1= 0v & v2 = - 5v to 0v - 40 - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 35 37.5 40 42.5 45 47.5 50 dbs21 (db) frequency (ghz) a b - 30 - 25 - 20 - 15 - 10 - 5 0 30 32.5 35 37.5 40 42.5 45 47.5 50 dbs11 (db) frequency (ghz) v1= - 5v, v2= - 5v v1= 0v, v2= 0v - 30 - 25 - 20 - 15 - 10 - 5 0 30 32.5 35 37.5 40 42.5 45 47.5 50 dbs22 (db) frequency (ghz) v1= - 5v, v2= - 5v v1= 0v, v2= 0v
cht4699 - qdg 36 - 44ghz variable attenuator ref. : dscht4699 - qdg2118 - 27 apr 12 6 / 12 specifications subject to change without notice bat. charmille - parc silic - 10, avenue du qub ec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 typical board measurements tamb.= +25c measuremen ts in the package access planes gain versus c ontrol v oltage gain versus input power & v1 c ontrol v oltage with v2= - 5v 38ghz 42ghz 2 - v1 variable with v2= - 5v v2 variable with v1= 0 v - 40 - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 - 5 - 4.5 - 4 - 3.5 - 3 - 2.5 - 2 - 1.5 - 1 - 0.5 0 dbs21 (db) control voltage v1 or v2 (v) 37.5ghz 39.5ghz 41.5ghz 43.5ghz - 16 - 14 - 12 - 10 - 8 - 6 - 4 - 2 0 0 5 10 15 20 25 gain (db) input power (dbm) v1= - 5v v1= - 3.5v v1= - 3.3v v1= - 3.1v v1= - 2.9v v1= - 2.7v v1= - 2.5v - 16 - 14 - 12 - 10 - 8 - 6 - 4 - 2 0 0 5 10 15 20 25 gain (db) input power (dbm) v1= - 5v v1= - 3.5v v1= - 3.3v v1= - 3.1v v1= - 2.9v v1= - 2.7v v1= - 2.5v
36 - 44ghz variable attenuator cht4699 - qdg ref. : dscht4699 - qdg2118 - 27 apr 12 7 / 12 specifications subject to change without notice bat. charmille - parc silic - 10, avenue du qubec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 typical board measurements tamb.= +25c measuremen ts in the package access planes input ip3 versus input power & v1 c ontrol v oltage at 38ghz with v2= - 5v input ip3 versus input power & v1 c ontrol v oltage at 42ghz with v2= - 5v 20 22 24 26 28 30 32 34 36 38 40 0 1 2 3 4 5 6 input ip3 (dbm) input power dcl (dbm) v1= - 5v v1= - 3.3v v1= - 3.1v v1= - 2.9v v1= - 2.7v 20 22 24 26 28 30 32 34 36 38 40 2 3 4 5 6 input ip3 (dbm) input power dcl (dbm) v1= - 5v v1= - 3.3v v1= - 3.1v v1= - 2.9v v1= - 2.7v
cht4699 - qdg 36 - 44ghz variable attenuator ref. : dscht4699 - qdg2118 - 27 apr 12 8 / 12 specifications subject to change without notice bat. charmille - parc silic - 10, avenue du qub ec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 typical board measurements tamb.= +25c measuremen ts in the package access planes input ip3 versus input power with v1= v2 38ghz 42ghz gain versus frequency and biasing option v1 variable with v2= - 5v v1=v2 20 22 24 26 28 30 32 34 36 38 40 0 1 2 3 4 5 6 input ip3 (dbm) input power dcl (dbm) - 3.3v - 3.1v - 2.9v - 2.7v 20 22 24 26 28 30 32 34 36 38 40 2 3 4 5 6 input ip3 (dbm) input power dcl (dbm) - 3.3v - 3.1v - 2.9v - 2.7v - 30 - 25 - 20 - 15 - 10 - 5 0 36 37 38 39 40 41 42 gain (db) frequency (ghz) v1= - 5v v1= - 3.3v v1= - 3.1v v1= - 2.9v v1= - 2.7v - 30 - 25 - 20 - 15 - 10 - 5 0 36 37 38 39 40 41 42 gain (db) frequency (ghz) - 5v - 3.3v - 3.1v - 2.9v - 2.7v
36 - 44ghz variable attenuator cht4699 - qdg ref. : dscht4699 - qdg2118 - 27 apr 12 9 / 12 specifications subject to change without notice bat. charmille - parc silic - 10, avenue du qubec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 package outline (1) matt tin, lead free (green) 1 - nc 9 - v1 17 - gnd (2) units : mm 2 - gnd (2) 10 - v2 18 - nc from the standard : jedec mo - 220 3 - gnd (2) 11 - nc 19 - nc (vggd) 4 - rf in 12 - nc 20 - nc 25 - gnd 5 - gnd (2) 13 - gnd (2) 21 - nc 6 - gnd (2) 14 - gnd (2) 22 - nc 7 - nc 15 - rf out 23 - nc 8 - nc 16 - gnd (2) 24 - nc (1) the package outline drawing included to this data - sheet is given for indication. refer to the application note an0017 ( http://www.ums - gaas.com ) for exact package dimensions. (2) it is strongly recommended to ground all pins marked gnd through the pcb board.
cht4699 - qdg 36 - 44ghz variable attenuator ref. : dscht4699 - qdg2118 - 27 apr 12 10 / 12 specifications subject to change without notice bat. charmille - parc silic - 10, avenue du qub ec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 evaluation mother board definition of the sij reference planes the reference planes used for sij measurements given above are symmetrical from the symmetrical axis of the package (see drawing beside). the input and output reference planes are located at 3.18mm offset (input wise and output wise respectively) from this axis. then, the given sij parame ters incorporate the land pattern of the evaluation motherboard recommended in paragraph "evaluation mother board". 3.18 3.18
36 - 44ghz variable attenuator cht4699 - qdg ref. : dscht4699 - qdg2118 - 27 apr 12 11 / 12 specifications subject to change without notice bat. charmille - parc silic - 10, avenue du qubec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 biasing sequence to obtain good performances in linearity, biasing voltage should be applied as following: - control of 1 st stage attenuation with v1 from C - control of 2 nd stage with v2 from - 5v to 0v, with v1 fixed at 0v this part could be also driven in single voltage control, applying the same voltage from - 5v to 0v on v1 and v2. 0v - 5v attenuation min. max. voltage v1 v2 0v - 5v attenuation min. max. voltage v1 v2
cht4699 - qdg 36 - 44ghz variable attenuator ref. : dscht4699 - qdg2118 - 27 apr 12 12 / 12 specifications subject to change without notice bat. charmille - parc silic - 10, avenue du qub ec - 91140 villebon - sur - yvette - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 recommended package footprint refer to the application note an0017 available at http://www.ums - gaas.com for package foot print recommendations and exact package dimensions . smd mounting procedure for the mounting process standard techniques involving solder paste and a suitable reflow process can be used. for further details, see application note an0017 available at http://www.ums - gaas.com . recommended environmental management ums products are compliant with the regulation in particular with the directives rohs n2011/65 and reach n1907/2006. more environmental data are available in the application note an0019 also available at http://www.ums - gaas.com . recommended esd management refer to the application note an0020 available at http://www.ums - gaas.com for esd sensitivity and handling recommendations for the ums package products. ordering information qfn 4x4 rohs compliant package: cht4699 - qdg stick: xy = 20 tape & reel: xy = 21 information furnished is believed to be accurate and reliable. however united monolithic semiconductors s.a.s. assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of united monolithic semiconductors s.a.s. . specifications mentioned in thi s publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. united monolithic semiconductors s.a.s. products are not authorised for use as critical components in life support devices or systems without express written approval from united monolithic semiconductors s.a.s.

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