chr2421 - qeg rohs compliant ref. : dschr2421 - qeg2031 - 31 jan 12 1 / 10 specifications subject to change without notice united monolithic semiconductors s.a.s. 10 avenue du qubec C silic 521 - 91946 courtaboeuf cedex france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 23.75 - 24.5ghz dual rx channel gaas monolithic microwave ic in smd leadless package description p lastic package the chr2421 - chr2421 - qeg qeg is a monolithic multifunction dual channel receiver in k - band which integrates low noise amplifiers and mixers providing an if signal from dc to 1 mhz. all the active devices are self biased on chip. the circuit is dedicated to sensors and also well suited for a wide range of microwave and millimetre wave applications and systems. the circuit is manufactured with a phemt process, 0.25 m gate length. it is supplied in a 24 leads rohs compliant qfn4x5 package . main features block diagram conversion gain versus fol and temperature ? main electrical characteristics tamb. = + 25c symbol parameter min typ max unit freq frequency range 23.75 24.5 ghz gain linear gain 22 db nf noise figure @1mhz 7 db p - 1db_rx rx input power at 1 db gain compression - 25 - 20 dbm ums r2421 yyww ? ? - 40c +25 c +105 c if_1 if_2 rx_1 rx_2 lo vd_lna vd_buf vg_buf vg_lna if_1 if_2 rx_1 rx_2 lo vd_lna vd_buf vg_buf vg_lna
chr2421 - qeg 23.75 - 24.5ghz dual rx channel ref. : dschr2421 - qeg2031 - 31 jan 12 2 / 10 specifications subject to change without notice 10 avenue du qubec, silic 521 - 91946 courtaboeuf cedex - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 electrical characteristics temp.= - 40c to +105c symbol parameter min typ max unit conditions f_rx rx frequency range 23.75 24.5 ghz f_lo lo frequency range 23.75 24.5 ghz f_if if frequency range dc 1 mhz rl_rx rx return loss 10 15 db rl_lo lo return loss 10 15 db l_if if load impedance 50 ohms p_lo lo drive power 0 2 8 dbm p_rf rf drive power range - 15 dbm gc (1) conversion gain within f_rx 17.5 22 26 db vg_lna4.7v g(f) gain variation over frequency ? 0.5 ? 1 db f_rx, f_lo g(t) gain variation over temperature ? 2 ? 3.5 db g(vg_lna) uncompressed gain versus vg control range 4 db nf ssb noise figure (if=1mhz) 7 12 db vg_lna4.7v 7 13 gc18db nf ssb noise figure (if=100khz) 1 3 18 db vg_lna4.7v 14 19 gc18db nf ssb noise figure (if=10khz) 18 25 db vg_lna4.7v 19 29 gc18db p - 1db_rx rx input power at 1 db gain compression - 25 - 20 dbm vg_lna4.7v p_lo0dbm ip3_rx rx input ip3 - 12 dbm i_lo/rx lo to rx isolation - 50 db i_lo/if lo to if isolation - 20 db p_lo=8dbm i_rxi/ifj (2 ) rxi to ifj isolation (p_ifj - p_ifi) within f_rx_r2 - 25 - 22 db dg_rx calibrated differential gain rx_1 vs rx_2 over operating conditions +/ - 0.25 +/ - 1 db gc18db dp_rx calibrated differential phase rx_1 vs rx_2 over operating conditions +/ - 1.5 +/ - 4 gc18db vd_lna; vg_lna ; vg_buf, vd_buf supply voltage +4.7 +5 +5.3 v vg_lna supply voltage for gain tune 0 5.3 v i_vg_lna lna total vg supply current 10 15 ma i_vd_lna lna total vd supply current 90 125 ma i_buf buffer total vg & vd supply current 55 75 ma i_vg_buf buffer vg current alone 9 14 ma top operating temperature range - 40 +105 c top=tcase
23.75 - 24.5ghz dual rx channel chr2421 - qeg ref. : dschr2421 - qeg2031 - 31 jan 12 3 / 10 specifications subject to change without notice 10 avenue du qubec, silic 521 - 91946 courtaboeuf cedex - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 (1) (1) conversion gain is typically improved of +0.8db with 220? if optimum load. (2 ) rxi to ifj isolation (p_ifj - p_ifi) is typically improved of 2db with 220_ if optimum load. these value s are representative of on - board measurements . packaged rx is conditionally stable (stability guaranteed on ums demo - board and for rf loads vswr <3:1). full temperature and supply voltage range. absolute maximum ratings tamb.= + 25c symbol parameter values unit +vgi, +vdi maximum positive supply voltage (1) minimum positive supply voltage (1) 6 - 0.5 v +i_vg_buf maximum buffer vg positive supply current (1) 16 ma +i_vg_lna maximum lna vg positive supply current (1) 20 ma +i_vd_lna maximum lna vd positive supply current (1) 135 ma +i_buf maximum buffer vg & vd positive supply current (1) 85 ma p_lo lo port maximum peak input power overdrive (1) 12 dbm p_rf rf port maximum peak input power overdrive (1) - 12 dbm tj junction temperature (2) 175 c top operating temperature range - 40 to +12 5 c tstg storage temperature range - 55 to +150 c (1) operation of this device above anyone of these parameters may cause permanent damage. (2) top=tcase. operation of this device above these parameters may cause permanent damage or reduce mttf .
chr2421 - qeg 23.75 - 24.5ghz dual rx channel ref. : dschr2421 - qeg2031 - 31 jan 12 4 / 10 specifications subject to change without notice 10 avenue du qubec, silic 521 - 91946 courtaboeuf cedex - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 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 - side 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 the 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 specified (see the curve pdiss. max) in order to guarantee the nominal device life time (mttf).
23.75 - 24.5ghz dual rx channel chr2421 - qeg ref. : dschr2421 - qeg2031 - 31 jan 12 5 / 10 specifications subject to change without notice 10 avenue du qubec, silic 521 - 91946 courtaboeuf cedex - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 typical board measurements (qfn plan) vd=vg = +4.7v; + 5 v; +5.3v conversion gain versus f_lo and temperature on channel 1 p_lo =0 / 4 / 8dbm conversion gain versus p_rf and temperature on channel 1 p_lo =0dbm ; f_lo =23.75 / 24.25 / 24.5ghz - 40c +25c +105c - 40c +105c
chr2421 - qeg 23.75 - 24.5ghz dual rx channel ref. : dschr2421 - qeg2031 - 31 jan 12 6 / 10 specifications subject to change without notice 10 avenue du qubec, silic 521 - 91946 courtaboeuf cedex - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 typical board measurements (qfn plan) tamb.= +25c , vd=vg = +5 v typical ssb nf over if frequency 10khz 100khz 1mhz nf=13db nf=10db nf=6.5db - 150 - 148 - 146 - 144 - 142 - 140 - 138 - 136 - 134 - 132 - 130 power (dbrms/hz) noise diode on noise diode off
23.75 - 24.5ghz dual rx channel chr2421 - qeg ref. : dschr2421 - qeg2031 - 31 jan 12 7 / 10 specifications subject to change without notice 10 avenue du qubec, silic 521 - 91946 courtaboeuf cedex - 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 - gnd (2) 9 - gnd (2) 17 - gnd (2) units : mm 2 - rx_2 10 - lo 18 - rx_1 from the standard : jedec 3 - gnd (2) 11 - nc 19 - gnd (2) mo - 220 4 - vd_lna22 12 - vg_buf1 20 - nc (vggd) 5 - vg_lna2 13 - vd_buf1 21 - vd_lna11 25 - gnd 6 - if_2 14 - if_1 22 - nc 7 - vd_buf2 15 - vg_lna1 23 - vd_lna12 8 - vg_buf2 16 - vd_lna21 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.
chr2421 - qeg 23.75 - 24.5ghz dual rx channel ref. : dschr2421 - qeg2031 - 31 jan 12 8 / 10 specifications subject to change without notice 10 avenue du qubec, silic 521 - 91946 courtaboeuf cedex - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 evaluation mother board notes the dc connections do not include any decoupling capacitor in package, therefore it is mandatory to provide a good external dc decoupling (10nf) on the pc board, as close as possible to the package.
23.75 - 24.5ghz dual rx channel chr2421 - qeg ref. : dschr2421 - qeg2031 - 31 jan 12 9 / 10 specifications subject to change without notice 10 avenue du qubec, silic 521 - 91946 courtaboeuf cedex - france tel.: +33 (0) 1 69 86 32 00 - fax: +33 (0) 1 69 86 34 34 recommended test fixture pcb layout (ref. 99191) material ro4003 rogers multilayer finish front side : electroless au 0.08 C 0.1m over electroless ni 5m back side : electroless au 0.08 C 0.1m over electroless ni 5m via holes 0.2 finish 1 finish 2 finish
chr2421 - qeg 23.75 - 24.5ghz dual rx channel ref. : dschr2421 - qeg2031 - 31 jan 12 10 / 10 specifications subject to change without notice 10 avenue du qubec, silic 521 - 91946 courtaboeuf cedex - 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. 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. 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 mana gement 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 4x5 rohs compliant package: chr2421 - qeg /xy 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 righ ts of united monolithic semiconductors s.a.s. . specifications mentioned in this 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.
|
