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cha3694-qdg rohs compliant ref. : dscha3694qdg9322 - 18 nov 09 1/16 specificat ions subject to change without notice united monolithic semiconductors s.a.s. route dpartementale 128 - bp46 - 91401 orsay cedex france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 31-40ghz variable gain amplifier gaas monolithic microwave ic in smd package description the cha3694-qdg is a variable gain broadband three-stage monolithic amplifier. it is designed for a wide range of applications, typically commercial communication systems. the circuit is manufactured with a power phemt process, 0.15m gate length, via holes through the substrate and air bridges. it is available in lead-free smd package. main features broadband performance 31-40ghz 18db gain 25dbm output ip3 19db gain control range 24l-qfn4x4 esd protected msl level : 1 main characteristics tamb = +25c, vd = +3.5v symbol parameter min typ max unit fop operating frequency range 31 40 ghz g small signal gain 18 db gc gain control range 19 db oip3 output 3 rd order intercept point @ max. gain 25 dbm esd protections: electrostatic discharge sensitive device. observe handling precautions! rfin rfout vd vctrl vg ums a3694 yyww on board measurements -18 -14 -10 -6 -2 2 6 10 14 18 22 30 31 32 33 34 35 36 37 38 39 40 41 42 43 frequency (ghz) linear gain (db)
cha3694-qdg 31-40ghz variable gain amplifier ref. : dscha3694qdg9322 - 18 nov 09 2/16 specificat ions subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 electrical characteristics tamb = +25c, vd = +3.5v symbol parameter min typ max unit fop operating frequency range 31 40 ghz g nominal gain @ max. gain (vctrl=-1.5v) (31-34ghz) nominal gain @ max. gain (vctrl=-1.5v) (34-40ghz) 13 16 15 18 db db nf noise figure @ max. gain (31-37ghz) noise figure @ max. gain (37-40ghz) 11 9 13 11 db db rlin input return loss (any attenuation) (31-37ghz) input return loss (any attenuation) (37-40ghz) -4 -7 -3 -6 db db rlout output return loss (any attenuation) (31-37gh z) output return loss (any attenuation) (37-40ghz) -7 -5 -6 -4 db db oip3 output 3 rd order intercept point @ nominal gain 23 25 dbm p1db output power at 1db gain compression @ nominal gain 15 17 dbm gc gain control range (31-34ghz) gain control range (37-40ghz) 23 17 25 19 db db vd drain bias voltage 3.5 v id drain bias current * 120 160 200 ma id p1db drain current at 1db gain compression 180 ma vg gate bias voltage -1 v vctrl variable gain control voltage -1.5 +0.6 v * id not affected by vctrl. these values are representative of onboard measurem ents as defined on the drawing in paragraph "evaluation mother board".
31-40ghz variable gain amplifier cha3694-qdg ref.: dscha3694qdg9322 - 18 nov 09 3/16 specificati ons subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 absolute maximum ratings (1) tamb = +25c symbol parameter values unit vd maximum drain bias voltage 4 v id maximum quiescent bias current 200 ma vg gate bias voltage -4.0 to +0.8 v vctrl variable gain control voltage -2.5 to +0.8 v pin maximum rf input power overdrive @ 3.5v 5 dbm tch maximum channel temperature 175 c ta operating temperature range -40 to +85 c tstg storage temperature range -55 to +125 c (1) operation of this device above anyone of these parameters may cause permanent damage.
cha3694-qdg 31-40ghz variable gain amplifier ref. : dscha3694qdg9322 - 18 nov 09 4/16 specificat ions subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 device thermal performances: all the figures given in this section are obtained assuming that the qfn device is cooled down only by conduction through the package thermal pad (no convection mode considered). the temperature is monitored at the package back-si de interface (tcase) as shown below. the system maximum temperature must be adjusted in order to guarantee that tcase remains below than the maximum value specified in t he next table. so, the system pcb must be designed to comply with this requirement. a derating must be applied on the dissipated power if the tcase temperature can not be maintained below than the maximum temperature speci fied (see the curve pdiss. max) in order to guarantee the nominal device life time (mt tf). recommanded max. junction temperature (tj max) : 151 c junction temperature absolute maximum rating : 175 c max. continuous dissipated power @ tcase= 85 c : 0,56 w => pdiss derating above tcase (1) = 85 c : 9 mw/c junction-case thermal resistance (rth j-c) (2) : <117 c/w min. package back side operating temperature (3) : -40 c max. package back side operating temperature (3) : 85 c min. storage temperature : -55 c max. storage temperature : 125 c (1) derating at junction temperature constant = tj max (2) rth j-c is calculated for a worst case where th e hotter junction of the mmic is considered. (3) tcase=package back side temperature measured un der the die-attach-pad (see the drawing below). 5.6 device thermal specification : cha3694-qdg 0 0,1 0,2 0,3 0,4 0,5 0,6 -50 -25 0 25 50 75 100 125 tcase (c) pdiss. max. (w) pdiss. max. (w) tcase example of qfn 16l 3x3 back-side view, temperature reference point (tcase) location.
31-40ghz variable gain amplifier cha3694-qdg ref.: dscha3694qdg9322 - 18 nov 09 5/16 specificati ons subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 typical package sij parameters for vctrl=-1.5v: tamb = +25c, vd = +3.5v, id = 160ma the sij measurement calibration planes are defined in the paragraph definition of the sij reference planes. freq (ghz) db(s11) ph(s11) () db(s12) ph(s12) () db(s2 1) ph(s21) () db(s22) ph(s22) () 2,0 -0,4 144 -51,6 -41 -54,8 -83 -4,7 122 3,0 -0,4 127 -49,2 -58 -48,2 -25 -6,5 147 4,0 -0,5 109 -48,4 -104 -45,3 -90 -1,1 119 5,0 -0,6 89 -49,8 -137 -46,0 -147 -1,2 85 6,0 -2,3 67 -52,4 -169 -42,3 103 -2,5 60 7,0 -1,1 64 -53,0 167 -38,2 -52 -3,7 40 8,0 -0,8 42 -52,8 130 -32,5 -99 -4,8 20 9,0 -0,9 22 -53,7 93 -24,8 -146 -6,5 3 10,0 -1,0 2 -55,0 54 -17,7 152 -8,2 -5 11,0 -1,1 -19 -57,2 27 -12,7 85 -7,6 -11 12,0 -1,3 -41 -59,1 -28 -9,4 20 -6,3 -27 13,0 -1,7 -64 -62,0 -55 -6,9 -43 -5,3 -48 14,0 -2,2 -88 -65,5 -168 -5,0 -102 -4,4 -69 15,0 -3,2 -115 -56,7 -168 -3,5 -159 -3,7 -91 16,0 -5,5 -144 -52,8 121 -2,1 147 -3,2 -112 17,0 -11,0 -172 -52,0 77 -1,0 93 -2,9 -133 18,0 -21,5 -112 -50,2 71 -0,2 42 -2,9 -153 19,0 -10,8 -93 -50,3 62 0,7 -5 -3,1 -174 20,0 -7,1 -115 -47,9 41 2,1 -49 -3,6 164 21,0 -5,6 -137 -48,8 14 4,1 -96 -4,5 138 22,0 -4,9 -157 -52,7 2 6,4 -146 -6,1 109 23,0 -4,8 -174 -54,3 21 8,5 159 -8,3 71 24,0 -5,0 170 -48,9 20 10,0 101 -10,9 24 25,0 -5,2 157 -47,1 32 10,8 43 -12,4 -32 26,0 -5,3 146 -46,0 2 11,3 -13 -11,5 -82 27,0 -5,2 135 -43,5 -6 11,6 -65 -10,4 -122 28,0 -5,3 123 -43,8 -19 12,1 -117 -9,2 -155 29,0 -5,4 112 -42,6 -34 12,7 -169 -8,0 175 30,0 -5,7 103 -41,4 -59 13,5 137 -7,0 145 31,0 -5,3 95 -41,0 -86 14,3 84 -6,9 114 31,5 -4,7 89 -45,1 -127 14,7 56 -6,9 101 32,0 -4,3 82 -53,4 -150 15,0 28 -7,4 85 32,5 -4,3 75 -57,5 49 15,4 1 -8,4 74 33,0 -4,1 70 -45,2 -30 16,0 -27 -9,2 65 33,5 -3,8 61 -43,5 -20 16,5 -56 -10,8 56 34,0 -3,5 53 -42,4 -52 17,0 -86 -12,7 50 34,5 -3,5 42 -42,6 -54 17,6 -116 -16,0 60 35,0 -3,5 31 -41,2 -60 18,1 -148 -17,0 94 35,5 -3,8 20 -39,5 -61 18,5 179 -13,2 106 36,0 -4,5 7 -37,5 -76 18,6 145 -10,5 100 36,5 -5,4 -5 -37,4 -82 18,7 112 -8,7 95 37,0 -6,7 -15 -38,5 -88 18,8 78 -7,2 89 37,5 -8,3 -27 -39,1 -104 18,7 44 -6,3 81 38,0 -10,4 -39 -39,0 -95 18,5 9 -6,0 70 38,5 -13,5 -45 -40,1 -100 18,4 -26 -5,7 63 39,0 -15,6 -47 -40,9 -106 18,2 -63 -5,4 56 39,5 -17,3 -41 -41,0 -111 17,7 -100 -5,5 45 40,0 -17,8 -34 -38,5 -94 17,3 -137 -5,4 34 41,0 -17,6 -81 -34,4 -109 16,8 147 -7,5 1 42,0 -18,1 -110 -30,5 -133 17,1 56 -10,9 -67 43,0 -7,3 -167 -29,1 173 15,0 -82 -11,9 161 44,0 -4,8 139 -35,2 121 -0,4 146 -7,9 170 45,0 -3,0 102 -43,2 73 -18,9 80 -3,2 134 46,0 -2,8 78 -46,5 160 -39,6 36 -2,4 110 47,0 -2,8 54 -38,7 -131 -36,8 -111 -1,8 95 48,0 -3,5 32 -34,0 -174 -30,0 -174 -1,7 81 49,0 -5,1 11 -30,6 140 -27,4 140 -1,5 62 50,0 -11,5 5 -28,5 83 -27,5 84 -2,4 38
cha3694-qdg 31-40ghz variable gain amplifier ref. : dscha3694qdg9322 - 18 nov 09 6/16 specificat ions subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 typical measured performances tamb = +25c, vd = +3.5v, vg tuned for id = 160 ma measurements in the package access plan , using the proposed land pattern & board, as defined in paragraph evaluation mother board:". linear gain versus frequency linear gain versus gain control voltage vctrl=-1.5v vctrl=-0.7v vctrl=-0.6v vctrl=-0.5v vctrl=-0.4v vctrl=-0.3v vctrl=+0.6v freq=40ghz freq=31ghz -18 -14 -10 -6 -2 2 6 10 14 18 22 30 31 32 33 34 35 36 37 38 39 40 41 42 43 frequency (ghz) linear gain (db) -18 -14 -10 -6 -2 2 6 10 14 18 22 -1,6 -1,4 -1,2 -1,0 -0,8 -0,6 -0,4 -0,2 0,0 0,2 0,4 0,6 gain control voltage (v) linear gain (db)
31-40ghz variable gain amplifier cha3694-qdg ref.: dscha3694qdg9322 - 18 nov 09 7/16 specificati ons subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 -22 -20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 30 31 32 33 34 35 36 37 38 39 40 41 42 43 frequency (ghz) return losses (db) gain control range versus frequency return losses versus frequency and gain control vol tage 0 4 8 12 16 20 24 28 32 36 30 31 32 33 34 35 36 37 38 39 40 41 42 43 frequency (ghz) gain control range (db) s22 (db) s11 (db)
cha3694-qdg 31-40ghz variable gain amplifier ref. : dscha3694qdg9322 - 18 nov 09 8/16 specificat ions subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 typical measured performances tamb = +25c, vd = +3.5v, vg tuned for id = 160 ma measurements in the plan of the connectors , using the proposed land pattern & board, as defined in paragraph evaluation mother board:". output power and gain versus vctrl and input power @ 31ghz output power and gain versus vctrl and input power @ 35ghz vctrl=-1.5v vctrl=-0.8v vctrl=-0.7v vctrl=-0.6v vctrl=-1.5v vctrl=-0.8v vctrl=-0.7v vctrl=-0.6v
31-40ghz variable gain amplifier cha3694-qdg ref.: dscha3694qdg9322 - 18 nov 09 9/16 specificati ons subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 output power and gain versus vctrl and input power @ 40ghz output ip3 versus dual carrier output power for nom inal gain @ 25c 9 13 17 21 25 29 33 37 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 dual carrier output power (dbm) output ip3 (dbm) freq=31ghz freq=34ghz freq=37ghz freq=40ghz vctrl=-1.5v vctrl=-0.8v vctrl=-0.7v vctrl=-0.6v
cha3694-qdg 31-40ghz variable gain amplifier ref. : dscha3694qdg9322 - 18 nov 09 10/16 specifica tions subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 typical measured performance in temperature t = -40c, +25c, +85c, vd = +3.5v, vg tuned for i d = 160 ma measurements in the plan of the connectors , using the proposed land pattern & board, as defined in paragraph evaluation mother board:". linear gain @ 31 and 40ghz 31ghz 40ghz -40c 25c 80c -40c +25c +80c -40c +25c +80c 31ghz 40ghz -40c 25c 80c -40c +25c +80c -40c +25c +80c (curent search @ vctrl=-1,5v @ 38-39ghz @ 25c) noise figure -40c 25c 80c vctrl=-1.5 v vctrl=-0.7 v vctrl=-0.6 v vctrl=-0.5 v -40c +25c +80c -40c +25c +80c -40c +25c +80c -40c 25c 80c -40c 25c 80c vctrl=-1.5 v vctrl=-0.7 v vctrl=-0.6 v vctrl=-0.5 v -40c +25c +80c -40c +25c +80c -40c +25c +80c
31-40ghz variable gain amplifier cha3694-qdg ref.: dscha3694qdg9322 - 18 nov 09 11/16 specificat ions subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 output ip3 versus dual carrier output power for nom inal gain @ 40ghz 9 13 17 21 25 29 33 37 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 dual carrier output power (dbm) output ip3 (dbm) temp= -40c temp=+25c temp=+75c
cha3694-qdg 31-40ghz variable gain amplifier ref. : dscha3694qdg9322 - 18 nov 09 12/16 specifica tions subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 package outline (1) matt tin, lead free (green) 1- nc 13- gnd units mm 2- gnd 14- gnd from the standard jedec mo-220 3- gnd 15- rf out (vggd) 4- rf in 16- gnd 25- gnd 5- gnd 17- gnd 6- gnd 18- nc 7- nc 19- nc 8- nc 20- nc 9- nc 21- vd 10- vctrl 22- nc 11- vg 23- nc 12- nc 24- nc (1) the package outline drawing included to this data-s heet is given for indication. refer to the application note an0017 available at http://www.ums-gaas.com for exact package dimensions. it is strongly recommended to ground all pins marke d gnd through the pcb board. ensure that the pcb board is designed to provide the best possible ground to the package. a3694
31-40ghz variable gain amplifier cha3694-qdg ref.: dscha3694qdg9322 - 18 nov 09 13/16 specificat ions subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 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 parameters incorporate the land pattern of the evaluation motherboard recommended in paragraph " evaluation mother board ". 3.18 3.18 recommended package footprint refer to the application note an0017 available at http://www.ums-gaas.com for package foot print recommendations. smd mounting procedure the smd leadless package has been designed for high volume surface mount pcb assembly process. the dimensions and footprint requ ired for the pcb (motherboard) are given in the drawings above. for the mounting process standard techniques involv ing solder paste and a suitable reflow process can be used. for further details, se e application note an0017. recommended environmental management refer to the application note an0019 available at http://www.ums-gaas.com for environmental data on ums package products.
cha3694-qdg 31-40ghz variable gain amplifier ref. : dscha3694qdg9322 - 18 nov 09 14/16 specifica tions subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 note due to esd protection circuits on rf input and outp ut, an external capacitance might be requested to isolate the product from external v oltage that could be present on the rf accesses. esd protections are also implemented on gate and co ntrol accesses. the dc connections do not include any decoupling ca pacitor in package, therefore it is mandatory to provide a good external dc decoupli ng (10nf) on the pc board, as close as possible to the package. refer to the application note an0020 available at http://www.ums-gaas.com for esd sensitivity and handling recommendations for the um s package products. rfin rfout vctrl vg vd
31-40ghz variable gain amplifier cha3694-qdg ref. : dscha3694qdg9322 - 18 nov 09 15/16 specifications subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 evaluation mother board: compatible with the proposed footprint. based on typically ro4003 / 8mils or equivalent. using a microstrip to coplanar transition to acces s the package. recommended for the implementation of this product on a module board. decoupling capacitors of 10nf 10% are recommended for all dc accesses. (see application note an0017 for details). vd vctrl vg
cha3694-qdg 31-40ghz variable gain amplifier ref. : dscha3694qdg9322 - 18 nov 09 16/16 specifica tions subject to change without notice route dpartementale 128, bp46 - 91401 orsay cedex - france tel.: +33 (0) 1 69 33 03 08 - fax: +33 (0) 1 69 33 03 09 ordering information qfn 4x4 rohs compliant package: cha3694-qdg/xy stick: xy = 20 tape & reel: xy = 21 information furnished is believed to be accurate an d 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 impli cation or otherwise under any patent or patent rights of united monolithic semiconductors s.a.s. . specifications mentioned in this publication are subject to change without notice. this publication supersedes and re places all information previously supplied. united monolithic semiconductors s.a.s. products are not authorised for use as critical components in life support devices or s ystems without express written approval from united monolithic semiconductors s.a.s.

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