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cht4699 - 99f ref. : dscht46992090 - 30 mar 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 - 99f 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 . it is available in chip form . 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 att dynamic range of attenuation 30 db iip3 input ip3 all attenuation 27 dbm rf_out v1 v2 rf_in - 34 - 32 - 30 - 28 - 26 - 24 - 22 - 20 - 18 - 16 - 14 - 12 - 10 - 8 - 6 - 4 - 2 0 35.0 37.5 40.0 42.5 45.0 47.5 50.0 dbs21 (db) frequency (ghz) a b a: v1 from - 5v to 0v & v2= - 5v b: v1= 0v & v2 from - 5v to 0v
cht4699 - 99f 36 - 44ghz variable attenuator ref. : dscht46992090 - 30 mar 12 2 / 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 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) - 8 db pin1db input 1db compression point (any attenuation) 20 dbm i ip3 input 3 rd order intercept point (any attenuation) 27 dbm these values are representative of on - wafer measurements that are made without bonding wires at the rf ports. a bonding wire of typically 0.1 to 0.15nh will improve the matching at the accesses. 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 v1 v1 control voltage - 5 to 0 v v2 v2 v2 control voltage - 5 to 0 v for optimum linearity v1& v2 should be tuned in sequence.
36 - 44ghz variable attenuator ch t4699 - 99f ref. : dscht46992090 - 30 mar 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 on wafer sij parameters tamb.= +25c, v1= - 5 v, v2= - 5 v , minimum attenuation freq (ghz) s11 (db) phs11 () s12 (db) phs12 () s21 (db) phs21 () s22 (db) phs22 () 25.0 - 19.46 - 17.4 - 3.02 53.8 - 3.13 53.5 - 20.13 - 10.5 25.5 - 21.44 - 10.3 - 3.03 45.6 - 3.04 45.9 - 21.81 4.0 26.0 - 22.65 10.1 - 3.09 37.9 - 3.13 38.6 - 22.83 23.7 26.5 - 21.57 28.1 - 3.14 30.8 - 3.14 31.4 - 22.67 36.9 27.0 - 20.47 41.5 - 3.11 23.6 - 3.06 23.4 - 21.34 47.5 27.5 - 18.31 50.0 - 3.05 15.3 - 3.06 15.8 - 18.76 53.5 28.0 - 16.03 52.0 - 3.12 7.1 - 3.18 7.4 - 15.88 53.7 28.5 - 14.38 49.4 - 3.35 - 1.0 - 3.31 - 0.6 - 13.89 50.9 29.0 - 13.17 46.0 - 3.51 - 8.7 - 3.33 - 6.9 - 12.59 49.1 29.5 - 11.99 42.3 - 3.61 - 15.9 - 3.52 - 15.1 - 11.73 48.0 30.0 - 11.29 39.0 - 3.78 - 22.1 - 3.56 - 21.6 - 10.82 44.0 30.5 - 10.46 33.2 - 3.98 - 29.8 - 3.56 - 28.6 - 10.07 37.6 31.0 - 9.95 28.5 - 4.02 - 36.6 - 3.69 - 34.9 - 9.46 31.2 31.5 - 9.70 24.5 - 4.04 - 43.0 - 3.68 - 42.3 - 8.83 25.0 32.0 - 9.26 21.6 - 4.00 - 49.9 - 3.83 - 50.3 - 8.46 20.4 32.5 - 8.57 18.5 - 4.32 - 58.7 - 3.67 - 57.9 - 7.98 16.8 33.0 - 8.24 12.5 - 4.37 - 63.5 - 4.15 - 65.6 - 7.66 12.1 33.5 - 8.09 8.8 - 4.39 - 70.1 - 4.30 - 69.3 - 7.69 7.7 34.0 - 7.59 5.0 - 4.32 - 76.6 - 4.08 - 76.2 - 7.68 2.1 34.5 - 7.42 - 0.6 - 4.36 - 82.9 - 3.88 - 80.2 - 7.69 - 2.8 35.0 - 7.14 - 8.2 - 3.92 - 90.0 - 3.49 - 89.4 - 7.50 - 11.1 35.5 - 7.28 - 12.8 - 4.09 - 97.7 - 3.71 - 98.4 - 7.63 - 15.5 36.0 - 7.51 - 18.2 - 4.02 - 105.9 - 3.42 - 108.0 - 7.84 - 19.7 36.5 - 7.56 - 24.6 - 4.35 - 111.6 - 4.08 - 116.3 - 8.18 - 22.1 37.0 - 8.09 - 28.7 - 4.14 - 118.8 - 4.11 - 120.9 - 8.86 - 23.3 37.5 - 8.60 - 31.7 - 4.04 - 125.2 - 4.05 - 128.0 - 9.49 - 24.4 38.0 - 8.73 - 36.7 - 3.72 - 132.8 - 3.64 - 133.5 - 9.52 - 27.7 38.5 - 9.43 - 40.2 - 3.59 - 141.2 - 3.47 - 143.8 - 9.77 - 31.1 39.0 - 9.77 - 43.1 - 3.75 - 150.8 - 3.73 - 151.5 - 9.88 - 34.0 39.5 - 10.25 - 50.9 - 3.75 - 157.6 - 3.83 - 161.0 - 10.39 - 38.3 40.0 - 11.94 - 55.1 - 3.73 - 165.3 - 4.07 - 167.0 - 11.25 - 38.5 40.5 - 13.58 - 55.1 - 3.80 - 173.6 - 3.89 - 173.3 - 12.21 - 39.6 41.0 - 15.22 - 53.3 - 3.79 178.5 - 3.73 178.7 - 13.36 - 34.3 41.5 - 17.80 - 43.2 - 3.59 170.1 - 3.65 169.1 - 14.03 - 28.1 42.0 - 18.88 - 23.1 - 3.70 161.7 - 3.73 161.0 - 14.48 - 25.3 42.5 - 17.78 - 6.7 - 3.68 153.2 - 3.72 152.2 - 14.80 - 14.9 43.0 - 15.78 5.7 - 3.84 143.8 - 3.79 144.0 - 14.21 - 4.5 43.5 - 13.90 7.5 - 3.80 136.7 - 3.73 134.1 - 12.11 0.3 44.0 - 11.87 9.1 - 4.10 126.2 - 3.96 122.6 - 10.53 - 0.5 44.5 - 10.25 5.3 - 4.38 116.9 - 4.65 114.1 - 9.63 - 2.0 45.0 - 9.30 - 1.2 - 4.71 108.1 - 5.34 106.2 - 8.86 - 2.7 45.5 - 8.64 - 8.3 - 5.28 102.0 - 5.54 101.1 - 7.90 - 3.5 46.0 - 8.75 - 13.8 - 5.73 96.8 - 5.46 95.0 - 7.30 - 9.1 46.5 - 8.46 - 18.1 - 5.37 89.9 - 5.51 84.7 - 6.64 - 17.6 47.0 - 8.19 - 22.3 - 4.85 82.1 - 5.86 78.0 - 6.12 - 25.3 47.5 - 8.02 - 25.5 - 5.30 68.6 - 6.14 69.2 - 6.08 - 32.7 48.0 - 7.44 - 31.5 - 6.30 64.2 - 6.66 60.2 - 6.29 - 35.3 48.5 - 8.08 - 39.7 - 6.56 56.0 - 7.14 56.5 - 6.02 - 38.2 49.0 - 8.32 - 41.1 - 6.92 52.3 - 7.72 50.4 - 6.20 - 45.0 49.5 - 8.44 - 48.7 - 6.66 49.4 - 7.18 47.2 - 6.63 - 51.7 50.0 - 10.43 - 58.0 - 5.71 37.4 - 7.01 36.4 - 7.65 - 56.9
cht4699 - 99f 36 - 44ghz variable attenuator ref. : dscht46992090 - 30 mar 12 4 / 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 on wafer sij parameters tamb.= +25c, v1= 0 v, v2= 0 v, maxi mum attenuation freq (ghz) s11 (db) phs11 () s12 (db) phs12 () s21 (db) phs21 () s22 (db) phs22 () 25.0 - 17.55 17.7 - 28.64 56.7 - 28.6 55.4 - 17.34 19.2 25.5 - 16.91 18.8 - 28.62 49.3 - 28.6 48.0 - 16.66 22.3 26.0 - 16.15 19.1 - 28.90 42.3 - 29.0 42.9 - 16.32 21.3 26.5 - 15.35 18.9 - 29.24 36.9 - 29.3 37.3 - 16.28 18.8 27.0 - 14.89 16.8 - 29.43 32.3 - 29.3 32.4 - 15.72 16.4 27.5 - 14.38 14.8 - 29.38 25.2 - 29.2 26.1 - 14.80 13.8 28.0 - 13.86 13.8 - 29.69 18.8 - 29.8 18.6 - 14.05 12.9 28.5 - 13.49 11.4 - 30.15 13.2 - 30.2 13.5 - 13.44 12.9 29.0 - 13.14 8.6 - 30.22 8.5 - 30.2 9.3 - 13.23 12.7 29.5 - 12.81 6.2 - 30.35 1.2 - 30.4 3.3 - 13.41 11.0 30.0 - 12.92 2.8 - 30.98 - 1.8 - 30.8 - 2.0 - 13.37 10.0 30.5 - 12.82 - 0.1 - 31.26 - 6.6 - 31.0 - 5.9 - 13.14 6.7 31.0 - 12.88 - 2.0 - 31.03 - 9.2 - 30.5 - 8.6 - 12.83 3.4 31.5 - 13.10 - 3.6 - 30.72 - 16.1 - 30.5 - 16.0 - 12.33 0.2 32.0 - 13.15 - 3.2 - 31.06 - 24.6 - 30.9 - 25.1 - 12.19 - 1.9 32.5 - 12.85 - 2.7 - 31.52 - 31.0 - 31.2 - 31.3 - 12.18 - 2.8 33.0 - 12.74 - 5.1 - 31.93 - 34.9 - 31.8 - 35.0 - 12.29 - 3.5 33.5 - 12.76 - 6.4 - 32.27 - 39.0 - 32.0 - 38.8 - 12.57 - 4.4 34.0 - 12.64 - 6.8 - 31.83 - 42.9 - 31.7 - 42.8 - 13.01 - 7.0 34.5 - 12.70 - 10.0 - 31.91 - 49.5 - 31.4 - 48.0 - 13.21 - 8.9 35.0 - 12.78 - 11.4 - 31.87 - 56.0 - 31.7 - 57.1 - 13.09 - 11.6 35.5 - 12.64 - 11.5 - 31.90 - 63.3 - 31.6 - 63.2 - 12.83 - 12.1 36.0 - 12.79 - 13.8 - 32.40 - 69.8 - 32.2 - 71.6 - 12.67 - 11.1 36.5 - 12.93 - 16.2 - 32.44 - 76.1 - 32.2 - 77.4 - 12.58 - 9.6 37.0 - 13.33 - 14.5 - 32.64 - 80.2 - 32.5 - 82.6 - 12.92 - 7.9 37.5 - 13.44 - 12.5 - 33.05 - 87.2 - 32.9 - 87.7 - 13.41 - 6.7 38.0 - 13.22 - 13.0 - 32.97 - 90.5 - 33.0 - 92.6 - 13.49 - 6.9 38.5 - 13.16 - 11.6 - 32.83 - 96.4 - 32.7 - 98.4 - 13.27 - 6.0 39.0 - 12.89 - 11.9 - 33.05 - 104.5 - 33.1 - 105.4 - 12.81 - 6.9 39.5 - 12.53 - 17.0 - 33.00 - 111.2 - 32.9 - 111.0 - 12.48 - 7.5 40.0 - 13.51 - 16.7 - 33.45 - 115.2 - 33.4 - 119.4 - 12.23 - 4.7 40.5 - 13.56 - 11.2 - 33.72 - 121.8 - 33.7 - 123.1 - 11.79 - 4.3 41.0 - 13.02 - 9.7 - 33.80 - 127.7 - 33.6 - 129.5 - 11.35 - 5.1 41.5 - 12.68 - 8.8 - 33.50 - 133.4 - 33.9 - 137.1 - 11.23 - 5.4 42.0 - 12.38 - 8.1 - 34.22 - 140.3 - 34.3 - 139.6 - 11.29 - 7.6 42.5 - 11.85 - 12.6 - 34.43 - 144.0 - 34.6 - 143.0 - 11.03 - 7.6 43.0 - 11.83 - 16.8 - 34.17 - 144.9 - 33.8 - 143.1 - 10.75 - 9.0 43.5 - 12.80 - 17.8 - 33.22 - 149.1 - 32.9 - 154.7 - 10.28 - 10.7 44.0 - 12.37 - 10.2 - 33.58 - 161.4 - 33.7 - 166.5 - 9.72 - 11.1 44.5 - 11.43 - 9.5 - 33.53 - 163.7 - 33.9 - 168.3 - 9.42 - 12.1 45.0 - 11.08 - 12.8 - 33.53 - 175.4 - 34.3 - 173.8 - 9.12 - 12.8 45.5 - 10.84 - 17.1 - 33.97 - 178.0 - 34.1 - 177.5 - 8.99 - 14.3 46.0 - 11.59 - 19.8 - 34.65 177.1 - 34.5 177.2 - 9.11 - 17.2 46.5 - 11.81 - 15.5 - 34.77 - 176.9 - 34.3 175.6 - 8.99 - 20.0 47.0 - 11.48 - 14.3 - 33.32 177.6 - 33.9 171.7 - 8.76 - 23.5 47.5 - 10.75 - 12.7 - 32.97 165.9 - 33.8 163.0 - 8.44 - 28.1 48.0 - 9.95 - 17.7 - 34.11 160.8 - 34.4 157.4 - 8.48 - 27.5 48.5 - 10.79 - 21.1 - 33.76 156.1 - 35.0 157.6 - 8.29 - 27.2 49.0 - 10.52 - 16.2 - 34.41 151.4 - 34.2 151.0 - 8.36 - 30.6 49.5 - 9.83 - 16.5 - 33.76 159.8 - 34.7 155.2 - 8.67 - 31.9 50.0 - 10.36 - 23.6 - 32.84 151.0 - 33.6 148.2 - 8.95 - 32.4
36 - 44ghz variable attenuator ch t4699 - 99f ref. : dscht46992090 - 30 mar 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 on wafer measurements tamb.= +25c gain versus control voltage gain versus control voltage v1 variable with v2= - 5v v2 variable with v1= 0 v - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 - 5.0 - 4.5 - 4.0 - 3.5 - 3.0 - 2.5 - 2.0 - 1.5 - 1.0 - 0.5 0.0 dbs21 (db) control voltage (v1 or v2) 37.5ghz 39.5ghz 41.5ghz 43.5ghz - 34 - 32 - 30 - 28 - 26 - 24 - 22 - 20 - 18 - 16 - 14 - 12 - 10 - 8 - 6 - 4 - 2 0 35.0 37.5 40.0 42.5 45.0 47.5 50.0 dbs21 (db) frequency (ghz) a b a: v1 from - 5v to 0v & v2= - 5v b: v1= 0v & v2 from - 5v to 0v
cht4699 - 99f 36 - 44ghz variable attenuator ref. : dscht46992090 - 30 mar 12 6 / 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 on wafer measurements tamb.= +25c s11 versus c ontrol v oltage s22 versus c ontrol v oltage gain versus input power & v1 c ontrol v oltage with v2= - 5v 38ghz 44ghz - 20 - 15 - 10 - 5 0 35.0 37.5 40.0 42.5 45.0 47.5 50.0 dbs11 (db) frequency (ghz) - 20 - 15 - 10 - 5 0 35.0 37.5 40.0 42.5 45.0 47.5 50.0 dbs22 (db) frequency (ghz) - 16 - 15 - 14 - 13 - 12 - 11 - 10 - 9 - 8 - 7 - 6 - 5 - 4 - 3 - 2 - 1 0 0 5 10 15 20 gain (db) input power (dbm) v1= - 5v v1= - 3.6v v1= - 3.2v v1= - 2.8v v1= - 2.4v - 16 - 15 - 14 - 13 - 12 - 11 - 10 - 9 - 8 - 7 - 6 - 5 - 4 - 3 - 2 - 1 0 0 5 10 15 20 gain (db) input power (dbm) v1= - 5v v1= - 3.6v v1= - 3.2v v1= - 2.8v v1= - 2.4v
36 - 44ghz variable attenuator ch t4699 - 99f ref. : dscht46992090 - 30 mar 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 test fixture measurements tamb.= +25c 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 - 99f 36 - 44ghz variable attenuator ref. : dscht46992090 - 30 mar 12 8 / 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 test fixture measurements tamb.= +25c input ip3 versus input power with v1= v2 38ghz 42ghz 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
36 - 44ghz variable attenuator ch t4699 - 99f ref. : dscht46992090 - 30 mar 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 mechanical data chip thickness: 100m. chip size : 2410x1500 35m all dimensions are in micrometers
cht4699 - 99f 36 - 44ghz variable attenuator ref. : dscht46992090 - 30 mar 12 10 / 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 recommended assembly plan note: supply feed should be bypassed. 25m diameter gold wire is to be preferred. recommended circuit bonding table label type decoupling comment v1, v2 v g 120pf gain control supply rf_out v1 rf_in v2 120pf 120pf to v1 dc power supply to v2 dc power supply
36 - 44ghz variable attenuator ch t4699 - 99f ref. : dscht46992090 - 30 mar 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 - 99f 36 - 44ghz variable attenuator ref. : dscht46992090 - 30 mar 12 12 / 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 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 products. 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 a re available in the application note an0019 also available at http://www.ums - gaas.com . ordering information chip form : cht4699 - 99f /00 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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