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general description the MAX2031 high-linearity passive upconverter or downconverter mixer is designed to provide +36dbm iip3, 7db nf, and 7db conversion loss for an 815mhz to 1000mhz rf frequency range to support gsm/cellu- lar base-station transmitter or receiver applications. with a 960mhz to 1180mhz lo frequency range, this particular mixer is ideal for high-side lo injection archi- tectures. for a pin-to-pin-compatible mixer meant for low-side lo injection, contact the factory. in addition to offering excellent linearity and noise per- formance, the MAX2031 also yields a high level of com- ponent integration. this device includes a double- balanced passive mixer core, a dual-input lo selec- table switch, and an lo buffer. on-chip baluns are also integrated to allow for a single-ended rf input for downconversion (or rf output for upconversion), and single-ended lo inputs. the MAX2031 requires a nomi- nal lo drive of 0dbm, and supply current is guaranteed to be below 100ma. the MAX2031 is pin compatible with the max2039/ max2041* 1700mhz to 2200mhz mixers, making this family of passive upconverters and downconverters ideal for applications where a common pc board layout is used for both frequency bands. the MAX2031 is available in a compact 20-pin thin qfn package (5mm x 5mm) with an exposed paddle. electrical performance is guaranteed over the extended -40? to +85? temperature range. applications features 815mhz to 1000mhz rf frequency range 960mhz to 1180mhz lo frequency range 325mhz to 850mhz lo frequency range (contact factory) dc to 250mhz if frequency range 7db conversion loss +36dbm input ip3 +27dbm input 1db compression point 7db noise figure integrated lo buffer integrated rf and lo baluns low -3dbm to +3dbm lo drive built-in spdt lo switch with 49db lo1 to lo2 isolation and 50ns switching time pin compatible with the max2039/max2041 1700mhz to 2200mhz mixers external current-setting resistor provides option for operating mixer in reduced-power/reduced- performance mode lead-free package available MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch ________________________________________________________________ maxim integrated products 1 19-0248; rev 0; 7/05 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. evaluation kit available cdma2000 is a registered trademark of telecommunications industry association. iden is a registered trademark of motorola, inc. wimax is a service mark of bandwidth.com, inc. cellular band wcdma and cdma2000 base stations gsm 850/gsm 900 2g and 2.5g edge base stations integrated digital enhanced network (iden ) base stations wimax (sm) base stations and customer premise equipment predistortion receivers microwave and fixed broadband wireless access wireless local loop digital and spread- spectrum communication systems ordering information part temp range pin-package pkg code m ax 2031e tp /- t - 40 c to + 85 c 20 thi n qfn- e p ** ( 5mm x 5m m ) t2055- 3 m ax 2031e tp + /+ t - 40 c to + 85 c 20 thi n qfn- e p ** ( 5mm x 5m m ) t2055- 3 ** ep = exposed paddle. + denotes lead-free package. MAX2031 top view 4 5 3 2 12 11 13 lobias losel gnd 14 v cc if+ gnd gnd gnd 67 tap 910 20 19 17 16 gnd gnd v cc gnd gnd lo1 v cc if- 8 18 rf 1 15 lo2 v cc e.p. pin configuration/ functional diagram * future product? ontact factory for availability.
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch 2 _______________________________________________________________________________________ absolute maximum ratings stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. v cc to gnd ...........................................................-0.3v to +5.5v rf (rf is dc shorted to gnd through a balun)..................50ma lo1, lo2 to gnd ..................................................-0.3v to +0.3v if+, if- to gnd ...........................................-0.3v to (v cc + 0.3v) tap to gnd ...........................................................-0.3v to +1.4v losel to gnd ...........................................-0.3v to (v cc + 0.3v) lobias to gnd..........................................-0.3v to (v cc + 0.3v) rf, lo1, lo2 input power* ............................................+20dbm continuous power dissipation (t a = +70 c) 20-pin thin qfn-ep (derate 26.3mw/ c above +70 c) ....2.1w j a ..................................................................................+38 c/w j c ..................................................................................+13 c/w operating temperature range (note a).....t c = -40 c to +85 c junction temperature ......................................................+150 c storage temperature range .............................-65 c to +150 c lead temperature (soldering, 10s) .................................+300 c dc electrical characteristics ( typical application circuit , v cc = +4.75v to +5.25v, no rf signals applied, t c = -40 c to +85 c. if+ and if- are dc grounded through an if balun. typical values are at v cc = +5v, t c = +25 c, unless otherwise noted.) parameter symbol conditions min typ max units supply voltage v cc 4.75 5.00 5.25 v supply current i cc 85 100 ma losel input-logic low v il 0.8 v losel input-logic high v ih 2v note a: t c is the temperature on the exposed paddle of the package. ac electrical characteristics ( typical application circuit , c5 = 2pf, l1 and c4 not used, v cc = +4.75v to +5.25v, rf and lo ports are driven from 50 ? sources, p lo = -3dbm to +3dbm, p rf = 0dbm, f rf = 815mhz to 1000mhz, f lo = 960mhz to 1180mhz, f if = 160mhz, f lo > f rf , t c = -40 c to +85 c, unless otherwise noted. typical values are at v cc = +5v, p lo = 0dbm, f rf = 910mhz, f lo = 1070mhz, f if = 160mhz, t c = +25 c, unless otherwise noted.) (note 1) parameter symbol conditions min typ max units rf frequency range f rf (note 2) 815 1000 mhz (note 2) 960 1180 lo frequency range f lo contact factory 325 850 mhz if frequency range f if external if transformer dependence (note 2) dc 250 mhz lo drive p lo (note 2) -3 +3 dbm lo2 selected, p lo = +3dbm, t c = +25 c4251 lo1-to-lo2 isolation (note 3) lo1 selected, p lo = +3dbm, t c = +25 c4249 db maximum lo leakage at rf port p lo = +3dbm -27 dbm maximum lo leakage at if port p lo = +3dbm -35 dbm lo switching time 50% of losel to if, settled within 2 degrees 50 ns minimum rf-to-if isolation 45 db rf port return loss 17 db lo1/lo2 port selected, lo2/lo1, rf, and if terminated into 50 ? 28 lo port return loss lo1/lo2 port unselected, lo2/lo1, rf, and if terminated into 50 ? 30 db if port return loss lo driven at 0dbm, rf terminated into 50 ? 17 db *maximum reliable continuous input power applied to the rf and if port of this device is +12dbm from a 50 ? source.
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch _______________________________________________________________________________________ 3 ac electrical characteristics (downconverter operation) ( typical application circuit , c5 = 2pf, l1 and c4 not used, v cc = +4.75v to +5.25v, rf and lo ports are driven from 50 ? sources, p lo = -3dbm to +3dbm, p rf = 0dbm, f rf = 815mhz to 1000mhz, f lo = 960mhz to 1180mhz, f if = 160mhz, f lo > f rf , t c = -40 c to +85 c, unless otherwise noted. typical values are at v cc = +5v, p lo = 0dbm, f rf = 910mhz, f lo = 1070mhz, f if = 160mhz, t c = +25 c, unless otherwise noted.) (note 1) parameter symbol conditions min typ max units conversion loss lc 7.0 db conversion loss flatness flatness over any one of three frequency bands (f if = 160mhz): f rf = 827mhz to 849mhz f rf = 869mhz to 894mhz f rf = 880mhz to 915mhz 0.18 db t c = +25 c to -40 c -0.3 conversion loss variation over temperature t c = +25 c to +85 c 0.2 db input compression point p 1db (note 4) 27 dbm input third-order intercept point iip3 f rf1 = 910mhz, f rf2 = 911mhz, p rf = 0dbm/tone, f lo = 1070mhz, p lo = 0dbm, t c = +25 c (note 3) 32 36 dbm t c = +25 c to -40 c 0.3 input ip3 variation over temperature iip3 t c = +25 c to +85 c -0.3 db 2 x 2 2lo - 2rf 72 spurious response at if 3 x 3 3lo - 3rf 79 dbc noise figure nf single sideband 7.0 db p blocker = +8dbm 15 noise figure under blocking (note 5) p blocker = +12dbm 19 db ac electrical characteristics (upconverter operation) ( typical application circuit , l1 = 4.7nh, c4 = 6pf, c5 not used, v cc = +4.75v to +5.25v, rf and lo ports are driven from 50 ? sources, p lo = -3dbm to +3dbm, p if = 0dbm, f rf = 815mhz to 1000mhz, f lo = 960mhz to 1180mhz, f if = 160mhz, f lo > f rf , t c = -40 c to +85 c, unless otherwise noted. typical values are at v cc = +5v, p lo = 0dbm, f rf = 910mhz, f lo = 1070mhz, f if = 160mhz, t c = +25 c, unless otherwise noted.) (note 1) parameter symbol conditions min typ max units conversion loss lc 7.4 db conversion loss flatness flatness over any one of three frequency bands (f if = 160mhz): f rf = 827mhz to 849mhz f rf = 869mhz to 894mhz f rf = 880mhz to 915mhz 0.3 db t c = +25 c to -40 c -0.3 conversion loss variation over temperature t c = +25 c to +85 c 0.4 db input compression point p 1db (note 4) 27 dbm input third-order intercept point iip3 f if1 = 160mhz, f if2 = 161mhz, p if = 0dbm/tone, f lo = 1070mhz, p lo = 0dbm, t c = +25 c (note 3) 32 36 dbm t c = +25 c to -40 c 1.2 input ip3 variation over temperature iip3 t c = +25 c to +85 c -0.9 db
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch 4 _______________________________________________________________________________________ ac electrical characteristics (upconverter operation) (continued) ( typical application circuit , l1 = 4.7nh, c4 = 6pf, c5 not used, v cc = +4.75v to +5.25v, rf and lo ports are driven from 50 ? sources, p lo = -3dbm to +3dbm, p if = 0dbm, f rf = 815mhz to 1000mhz, f lo = 960mhz to 1180mhz, f if = 160mhz, f lo > f rf , t c = -40 c to +85 c, unless otherwise noted. typical values are at v cc = +5v, p lo = 0dbm, f rf = 910mhz, f lo = 1070mhz, f if = 160mhz, t c = +25 c, unless otherwise noted.) (note 1) parameter symbol conditions min typ max units lo 2if spur 64 dbc lo 3if spur 83 dbc output noise floor p out = 0dbm (note 5) -167 dbm/hz note 1: all limits include external component losses. output measurements are taken at if or rf port of the typical application circuit . note 2: operation outside this range is possible, but with degraded performance of some parameters. note 3: guaranteed by design. note 4: compression point characterized. it is advisable not to continuously operate the mixer rf/if inputs above +12dbm. note 5: measured with external lo source noise filtered, so its noise floor is -174dbm/hz. this specification reflects the effects of a ll snr degradations in the mixer, including the lo noise as defined in maxim application note 2021.
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch _______________________________________________________________________________________ 5 26 30 28 34 32 38 36 40 input ip3 vs. rf frequency MAX2031 toc04 rf frequency (mhz) input ip3 (dbm) 800 850 900 950 1000 t c = -25 c t c = +85 c, +25 c t c = -40 c 26 30 28 34 32 38 36 40 input ip3 vs. rf frequency MAX2031 toc05 rf frequency (mhz) input ip3 (dbm) 800 850 900 950 1000 p lo = -3dbm p lo = +3dbm p lo = 0dbm 26 30 28 34 32 38 36 40 input ip3 vs. rf frequency MAX2031 toc06 rf frequency (mhz) input ip3 (dbm) 800 850 900 950 1000 v cc = 4.75v v cc = 5.0v v cc = 5.25v 5 6 8 7 9 10 noise figure vs. rf frequency MAX2031 toc07 rf frequency (mhz) noise figure (db) 800 900 850 950 1000 t c = -40 c t c = +85 c t c = +25 c t c = -25 c 5 6 8 7 9 10 noise figure vs. rf frequency MAX2031 toc08 rf frequency (mhz) noise figure (db) 800 900 850 950 1000 p lo = -3dbm, 0dbm, +3dbm 5 6 8 7 9 10 noise figure vs. rf frequency MAX2031 toc09 rf frequency (mhz) noise figure (db) 800 900 850 950 1000 v cc = 4.75v, 5.0v, 5.25v typical operating characteristics ( typical application circuit , c5 = 2pf, l1 and c4 not used, v cc = +5.0v, p lo = 0dbm, p rf = 0dbm, f lo > f rf , f if = 160mhz, unless otherwise noted.) downconverter curves 5 6 8 7 9 10 conversion loss vs. rf frequency MAX2031 toc01 rf frequency (mhz) conversion loss (db) 800 900 850 950 1000 t c = -40 c t c = +25 c t c = -25 c t c = +85 c 5 6 8 7 9 10 conversion loss vs. rf frequency MAX2031 toc02 rf frequency (mhz) conversion loss (db) 800 900 850 950 1000 p lo = -3dbm, 0dbm, +3dbm 5 6 8 7 9 10 conversion loss vs. rf frequency MAX2031 toc03 rf frequency (mhz) conversion loss (db) 800 900 850 950 1000 v cc = 4.75v, 5.0v, 5.25v
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch 6 _______________________________________________________________________________________ 100 90 80 70 60 800 900 850 950 1000 3lo - 3rf response vs. rf frequency MAX2031 toc13 rf frequency (mhz) 3lo - 3rf response (dbc) p rf = 0dbm t c = +85 c t c = +25 c t c = -40 c, -25 c 100 90 80 70 60 800 900 850 950 1000 3lo - 3rf response vs. rf frequency MAX2031 toc14 rf frequency (mhz) 3lo - 3rf response (dbc) p rf = 0dbm p lo = -3dbm p lo = +3dbm p lo = 0dbm 100 90 80 70 60 800 900 850 950 1000 3lo - 3rf response vs. rf frequency MAX2031 toc15 rf frequency (mhz) 3lo - 3rf response (dbc) p rf = 0dbm v cc = 5.0v v cc = 4.75v v cc = 5.25v 32 30 28 26 24 800 900 850 950 1000 input p 1db vs. rf frequency MAX2031 toc16 rf frequency (mhz) input p 1db (dbm) t c = -25 c, +85 c t c = +25 c t c = -40 c 32 30 28 26 24 800 900 850 950 1000 input p 1db vs. rf frequency MAX2031 toc17 rf frequency (mhz) input p 1db (dbm) p lo = -3dbm p lo = 0dbm, +3dbm 32 30 28 26 24 800 900 850 950 1000 input p 1db vs. rf frequency MAX2031 toc18 rf frequency (mhz) input p 1db (dbm) v cc = 5.0v v cc = 4.75v v cc = 5.25v downconverter curves 45 55 75 65 85 95 2lo - 2rf response vs. rf frequency MAX2031 toc10 rf frequency (mhz) 2lo - 2rf response (dbc) 800 900 850 950 1000 t c = -40 c t c = +85 c t c = +25 c t c = -25 c p rf = 0dbm 45 55 75 65 85 95 2lo - 2rf response vs. rf frequency MAX2031 toc11 rf frequency (mhz) 2lo - 2rf response (dbc) 800 900 850 950 1000 p lo = +3dbm p lo = -3dbm p lo = 0dbm p rf = 0dbm 45 55 75 65 85 95 2lo - 2rf response vs. rf frequency MAX2031 toc12 rf frequency (mhz) 2lo - 2rf response (dbc) 800 900 850 950 1000 p rf = 0dbm v cc = 4.75v, 5.0v v cc = 5.25v typical operating characteristics (continued) ( typical application circuit , c5 = 2pf, l1 and c4 not used, v cc = +5.0v, p lo = 0dbm, p rf = 0dbm, f lo > f rf , f if = 160mhz, unless otherwise noted.)
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch _______________________________________________________________________________________ 7 60 55 50 45 40 850 1050 950 1150 1250 lo switch isolation vs. lo frequency MAX2031 toc19 lo frequency (mhz) lo switch isolation (db) t c = -40 c, -25 c t c = +85 c t c = +25 c 60 55 50 45 40 850 1050 950 1150 1250 lo switch isolation vs. lo frequency MAX2031 toc20 lo frequency (mhz) lo switch isolation (db) p lo = -3dbm, 0dbm, +3dbm 60 55 50 45 40 850 1050 950 1150 1250 lo switch isolation vs. lo frequency MAX2031 toc21 lo frequency (mhz) lo switch isolation (db) v cc = 4.75v, 5.0v, 5.25v -20 -30 -40 -50 -60 960 1060 1010 1110 1160 lo leakage at if port vs. lo frequency MAX2031 toc22 lo frequency (mhz) lo leakage (dbm) t c = -40 c, -25 c t c = +25 c t c = +85 c t c = -40 c, -25 c t c = +25 c t c = +85 c -20 -30 -40 -50 -60 960 1060 1010 1110 1160 lo leakage at if port vs. lo frequency MAX2031 toc23 lo frequency (mhz) lo leakage (dbm) p lo = -3dbm, 0dbm, +3dbm -20 -30 -40 -50 -60 960 1060 1010 1110 1160 lo leakage at if port vs. lo frequency MAX2031 toc24 lo frequency (mhz) lo leakage (dbm) v cc = 5.0v v cc = 4.75v v cc = 5.25v -45 -35 -40 -25 -30 -20 -15 850 1050 950 1150 1250 lo leakage at rf port vs. lo frequency MAX2031 toc25 lo frequency (mhz) lo leakage at rf port (dbm) t c = -40 c, -25 c t c = +85 c t c = +25 c -45 -35 -40 -25 -30 -20 -15 850 1050 950 1150 1250 lo leakage at rf port vs. lo frequency MAX2031 toc26 lo frequency (mhz) lo leakage at rf port (dbm) p lo = -3dbm, 0dbm, +3dbm -45 -35 -40 -25 -30 -20 -15 850 1050 950 1150 1250 lo leakage at rf port vs. lo frequency MAX2031 toc27 lo frequency (mhz) lo leakage at rf port (dbm) v cc = 5.0v v cc = 4.75v v cc = 5.25v downconverter curves typical operating characteristics (continued) ( typical application circuit , c5 = 2pf, l1 and c4 not used, v cc = +5.0v, p lo = 0dbm, p rf = 0dbm, f lo > f rf , f if = 160mhz, unless otherwise noted.)
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch 8 _______________________________________________________________________________________ 30 20 25 10 15 5 0 rf port return loss vs. rf frequency MAX2031 toc31 rf frequency (mhz) rf port return loss (db) 750 850 900 800 950 1000 1050 p lo = -3dbm, 0dbm, +3dbm 50 35 40 45 30 25 20 15 10 5 0 0200 100 300 400 500 if port return loss vs. if frequency MAX2031 toc32 if frequency (mhz) if port return loss (db) v cc = 4.75v, 5.0v, 5.25v includes if transformer 50 35 40 45 30 25 20 15 10 5 0 0 200 100 300 400 500 if port return loss vs. if frequency MAX2031 toc33 if frequency (mhz) if port return loss (db) includes if transformer p lo = -3dbm, 0dbm, +3dbm 40 35 30 25 20 15 10 5 0 800 900 1000 1100 1200 1300 lo selected return loss vs. lo frequency MAX2031 toc34 lo frequency (mhz) lo selected return loss (db) p lo = -3dbm p lo = +3dbm p lo = 0dbm 60 40 50 20 30 10 0 800 1300 lo unselected return loss vs. lo frequency MAX2031 toc35 lo frequency (mhz) lo unselected return loss (db) 1000 900 1100 1200 p lo = -3dbm, 0dbm, +3dbm 100 90 80 70 60 -40 10 -15 35 60 85 supply current vs.temperature (t c ) MAX2031 toc36 temperature ( c) supply current (ma) v cc = 5.0v v cc = 4.75v v cc = 5.25v downconverter curves 30 40 35 50 45 55 60 800 900 850 950 1000 rf-to-if isolation vs. rf frequency MAX2031 toc28 rf frequency (mhz) rf-to-if isolation (db) t c = -40 c, -25 c t c = +85 c t c = +25 c 30 40 35 50 45 55 60 800 900 850 950 1000 rf-to-if isolation vs. rf frequency MAX2031 toc29 rf frequency (mhz) rf-to-if isolation (db) p lo = -3dbm p lo = 0dbm p lo = +3dbm 30 40 35 50 45 55 60 800 900 850 950 1000 rf-to-if isolation vs. rf frequency MAX2031 toc30 rf frequency (mhz) rf-to-if isolation (db) v cc = 4.75v, 5.0v, 5.25v typical operating characteristics (continued) ( typical application circuit , c5 = 2pf, l1 and c4 not used, v cc = +5.0v, p lo = 0dbm, p rf = 0dbm, f lo > f rf , f if = 160mhz, unless otherwise noted.)
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch _______________________________________________________________________________________ 9 4 5 7 6 8 9 750 850 800 900 950 1000 1050 conversion loss vs. rf frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc01 rf frequency (mhz) conversion loss (db) t c = -40 c t c = +25 c t c = +85 c t c = -25 c 3 5 4 7 6 8 9 conversion loss vs. rf frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc02 rf frequency (mhz) conversion loss (db) 750 850 900 800 950 1000 1050 p lo = -3dbm, 0dbm, +3dbm 3 5 4 7 6 8 9 conversion loss vs. rf frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc03 rf frequency (mhz) conversion loss (db) 750 850 900 800 950 1000 1050 v cc = 4.75v, 5.0v, 5.25v 25 29 27 33 31 37 35 39 750 850 900 800 950 1000 1050 input ip3 vs. rf frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc04 rf frequency (mhz) input ip3 (dbm) t c = +85 c t c = -40 c t c = -25 c t c = +25 c 25 29 27 33 31 37 35 39 750 850 900 800 950 1000 1050 input ip3 vs. rf frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc05 rf frequency (mhz) input ip3 (dbm) p lo = -3dbm, 0dbm, +3dbm 25 29 27 33 31 37 35 39 750 850 900 800 950 1000 1050 input ip3 vs. rf frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc06 rf frequency (mhz) input ip3 (dbm) v cc = 4.75v v cc = 5.0v v cc = 5.25v 50 60 55 70 65 75 80 lo + 2if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc07 lo frequency (mhz) lo + 2if rejection (dbc) 910 1010 1060 960 1110 1160 1210 p if = 0dbm t c = +25 c t c = -40 c, -25 c t c = +85 c 50 60 55 70 65 75 80 lo + 2if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc08 lo frequency (mhz) lo + 2if rejection (dbc) 910 1010 1060 960 1110 1160 1210 p lo = 0dbm p lo = -3dbm p lo = +3dbm p if = 0dbm 50 60 55 70 65 75 80 lo + 2if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc09 lo frequency (mhz) lo + 2if rejection (dbc) 910 1010 1060 960 1110 1160 1210 v cc = 4.75v v cc = 5.25v v cc = 5.0v p if = 0dbm typical operating characteristics ( typical application circuit , l1 = 4.7nh, c4 = 6pf, c5 not used, v cc = +5.0v, p lo = 0dbm, p if = 0dbm, f rf = f lo + f if , f if = 160mhz, unless otherwise noted.) upconverter curves
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch 10 ______________________________________________________________________________________ 50 60 55 70 65 75 80 lo - 2if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc10 lo frequency (mhz) lo - 2if rejection (dbc) 910 1010 1060 960 1110 1160 1210 p if = 0dbm t c = -40 c, -25 c t c = +25 c t c = +85 c 60 55 50 70 65 75 80 lo - 2if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc11 lo frequency (mhz) lo - 2if rejection (dbc) 910 1010 1060 960 1110 1160 1210 p if = 0dbm p lo = -3dbm p lo = 0dbm p lo = +3dbm 50 60 55 70 65 75 80 lo - 2if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc12 lo frequency (mhz) lo - 2if rejection (dbc) 910 1010 1060 960 1110 1160 1210 v cc = 4.75v v cc = 5.25v v cc = 5.0v p if = 0dbm 90 80 70 60 50 910 1060 960 1010 1110 1160 1210 lo + 3if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc13 lo frequency (mhz) lo + 3if rejection (dbc) p if = 0dbm t c = -40 c, -25 c, +25 c, +85 c 90 80 70 60 50 910 1060 960 1010 1110 1160 1210 lo + 3if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc14 lo frequency (mhz) lo + 3if rejection (dbc) p lo = -3dbm, 0dbm, +3dbm p if = 0dbm 90 80 70 60 50 910 1060 960 1010 1110 1160 1210 lo + 3if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc15 lo frequency (mhz) lo + 3if rejection (dbc) p if = 0dbm v cc = 4.75v, 5.0v v cc = 5.25v 90 80 70 60 50 910 1060 960 1010 1110 1160 1210 lo - 3if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc16 lo frequency (mhz) lo - 3if rejection (dbc) p if = 0dbm t c = -40 c, -25 c, +25 c t c = +85 c 90 80 70 60 50 910 1060 960 1010 1110 1160 1210 lo - 3if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc17 lo frequency (mhz) lo - 3if rejection (dbc) p lo = -3dbm, 0dbm, +3dbm p if = 0dbm 90 80 70 60 50 910 1060 960 1010 1110 1160 1210 lo - 3if rejection vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc18 lo frequency (mhz) lo - 3if rejection (dbc) p if = 0dbm v cc = 4.75v v cc = 5.0v v cc = 5.25v upconverter curves typical operating characteristics (continued) ( typical application circuit , l1 = 4.7nh, c4 = 6pf, c5 not used, v cc = +5.0v, p lo = 0dbm, p if = 0dbm, f rf = f lo + f if , f if = 160mhz, unless otherwise noted.)
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch ______________________________________________________________________________________ 11 -15 -20 -25 -30 -35 910 1060 960 1010 1110 1160 1210 lo leakage at rf port vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc19 lo frequency (mhz) lo leakage at rf port (dbm) t c = +85 c t c = +25 c t c = -40 c, -25 c -15 -20 -25 -30 -35 910 1060 960 1010 1110 1160 1210 lo leakage at rf port vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc20 lo frequency (mhz) lo leakage at rf port (dbm) p lo = -3dbm, 0dbm, +3dbm -15 -20 -25 -30 -35 910 1060 960 1010 1110 1160 1210 lo leakage at rf port vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc21 lo frequency (mhz) lo leakage at rf port (dbm) v cc = 4.75v v cc = 5.0v v cc = 5.25v -100 -90 -70 -80 -60 -50 910 1010 960 1060 1110 1160 1210 if leakage at rf vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc22 lo frequency (mhz) if leakage (dbm) t c = +85 c t c = -40 c, -25 c t c = +25 c -100 -90 -70 -80 -60 -50 910 1010 960 1060 1110 1160 1210 if leakage at rf vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc23 lo frequency (mhz) if leakage (dbm) p lo = +3dbm p lo = -3dbm p lo = 0dbm -100 -90 -70 -80 -60 -50 910 1010 960 1060 1110 1160 1210 if leakage at rf vs. lo frequency (l-c bpf tuned for 810mhz rf frequency) MAX2031 toc24 lo frequency (mhz) if leakage (dbm) v cc = 4.75v v cc = 5.25v v cc = 5.0v 35 25 30 15 20 5 10 0 750 850 900 800 950 1000 1050 MAX2031 toc25 rf frequency (mhz) rf port return loss (db) rf port return loss vs. rf frequency (l-c bpf tuned for 810mhz rf frequency) the optional l-c bpf enhances performance in the upconverter mode but limits rf bandwidth l1 and c4 bpf installed l1 and c4 bpf removed upconverter curves typical operating characteristics (continued) ( typical application circuit , l1 = 4.7nh, c4 = 6pf, c5 not used, v cc = +5.0v, p lo = 0dbm, p if = 0dbm, f rf = f lo + f if , f if = 160mhz, unless otherwise noted.)
MAX2031 detailed description the MAX2031 can operate either as a downconverter or an upconverter mixer that provides approximately 7db of conversion loss with a typical 7db noise figure. iip3 is +36dbm for both upconversion and downconversion modes. the integrated baluns and matching circuitry allow for 50 ? single-ended interfaces to the rf port and the two lo ports. the rf port can be used as an input for downconversion or an output for upconversion. a sin- gle-pole, double-throw (spdt) switch provides 50ns switching time between the two lo inputs with 49db of lo-to-lo isolation. furthermore, the integrated lo buffer provides a high drive level to the mixer core, reducing the lo drive required at the MAX2031 s inputs to a -3dbm to +3dbm range. the if port incorporates a dif- ferential output for downconversion, which is ideal for providing enhanced iip2 performance. for upconver- sion, the if port is a differential input. specifications are guaranteed over broad frequency ranges to allow for use in cellular band wcdma, cdmaone , cdma2000, and gsm 850/gsm 900 2.5g edge base stations. the MAX2031 is specified to oper- ate over an 815mhz to 1000mhz rf frequency range, a 960mhz to 1180mhz lo frequency range, and a dc to 250mhz if frequency range. operation beyond these ranges is possible; see the typical operating characteristics for additional details. the MAX2031 is optimized for high-side lo injection architectures. however, the device can operate in low- side lo injection applications with an extended lo range, but performance degrades as f lo decreases. see the typical operating characteristics for measurements taken with f lo below 960mhz. for a pin-compatible device that has been optimized for lo frequencies below 960mhz, contact the factory. rf port and balun for using the MAX2031 as a downconverter, the rf input is internally matched to 50 ? , requiring no external matching components. a dc-blocking capacitor is required because the input is internally dc shorted to ground through the on-chip balun. for upconverter operation, the rf port is a single-ended output similarly matched to 50 ? . lo inputs, buffer, and balun the MAX2031 is optimized for high-side lo injection architectures with a 960mhz to 1180mhz lo frequency range. for a device with a 325mhz to 850mhz lo fre- quency range, contact the factory. as an added fea- ture, the MAX2031 includes an internal lo spdt switch that can be used for frequency-hopping applications. the switch selects one of the two single-ended lo ports, allowing the external oscillator to settle on a par- ticular frequency before it is switched in. lo switching time is typically less than 50ns, which is more than ade- quate for nearly all gsm applications. if frequency hop- ping is not employed, set the switch to either of the lo inputs. the switch is controlled by a digital input (losel): logic-high selects lo2, logic-low selects lo1. to avoid damage to the part, voltage must be applied to v cc before digital logic is applied to losel (see the absolute maximum ratings ). lo1 and lo2 inputs are internally matched to 50 ? , requiring an 82pf dc-block- ing capacitor at each input. high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch 12 ______________________________________________________________________________________ pin description pin name function 1, 6, 8, 14 v cc power-supply connection. bypass each v cc pin to gnd with capacitors as shown in the typical application circuit . 2rf s i ng l e- e nd ed 50 ? rf inp ut/o utp ut. thi s p or t i s i nter nal l y m atched and d c shor ted to g n d thr oug h a b al un. 3 tap center tap of the internal rf balun. connect to ground. 4, 5, 10, 12, 13, 16, 17, 20 gnd ground 7 lobias bias resistor for internal lo buffer. connect a 523 ? 1% resistor from lobias to the power supply. 9 losel local oscillator select. logic-control input for selecting lo1 or lo2. 11 lo1 local oscillator input 1. drive losel low to select lo1. 15 lo2 local oscillator input 2. drive losel high to select lo2. 18, 19 if-, if+ differential if input/outputs ep gnd exposed ground paddle. solder the exposed paddle to the ground plane using multiple vias. cdmaone is a trademark of cdma development group.
a two-stage internal lo buffer allows a wide input- power range for the lo drive. all guaranteed specifica- tions are for a -3dbm to +3dbm lo signal power. the on-chip low-loss balun, along with an lo buffer, drives the double-balanced mixer. all interfacing and match- ing components from the lo inputs to the if outputs are integrated on-chip. high-linearity mixer the core of the MAX2031 is a double-balanced, high- performance passive mixer. exceptional linearity is pro- vided by the large lo swing from the on-chip lo buffer. differential if the MAX2031 mixer has a dc to 250mhz if frequency range. note that these differential ports are ideal for pro- viding enhanced iip2 performance. single-ended if applications require a 1:1 balun to transform the 50 ? dif- ferential if impedance to 50 ? single-ended. including the balun, the if return loss is better than 15db. the dif- ferential if is used as an input port for upconverter oper- ation. the user can use a differential if amplifier following the mixer, but a dc block is required on both if pins. applications information input and output matching the rf and lo inputs are internally matched to 50 ? . no matching components are required. as a downconvert- er, the return loss at the rf port is typically better than 15db over the entire input range (815mhz to 1000mhz), and return loss at the lo ports are typically 15db (960mhz to 1180mhz). rf and lo inputs require only dc-blocking capacitors for interfacing. an optional l-c bandpass filter (bpf) can be installed at the rf port to improve upconverter performance. see the typical application circuit and typical operating characteristics for upconverter operation with an l-c bpf tuned for 810mhz rf frequency. performance can be optimized at other frequencies by choosing different values for l1 and c4. removing l1 and c4 altogether results in a broader match, but performance degrades. contact factory for details. the if output impedance is 50 ? (differential). for eval- uation, an external low-loss 1:1 (impedance ratio) balun transforms this impedance to a 50 ? single-ended out- put (see the typical application circuit). bias resistor bias current for the lo buffer is optimized by fine tun- ing resistor r1. if reduced current is required at the expense of performance, contact the factory for details. if the 1% bias resistor values are not readily available, substitute standard 5% values. layout considerations a properly designed pc board is an essential part of any rf/microwave circuit. keep rf signal lines as short as possible to reduce losses, radiation, and induc- tance. for the best performance, route the ground-pin traces directly to the exposed pad under the package. the pc board exposed pad must be connected to the ground plane of the pc board. it is suggested that mul- tiple vias be used to connect this pad to the lower-level ground planes. this method provides a good rf/ther- mal conduction path for the device. solder the exposed pad on the bottom of the device package to the pc board. the MAX2031 evaluation kit can be used as a reference for board layout. gerber files are available upon request at www.maxim-ic.com. power-supply bypassing proper voltage-supply bypassing is essential for high- frequency circuit stability. bypass each v cc pin with the capacitors shown in the typical application circuit . see table 1. exposed pad rf/thermal considerations the exposed paddle (ep) of the MAX2031 s 20-pin thin qfn-ep package provides a low-thermal-resistance path to the die. it is important that the pc board on which the MAX2031 is mounted be designed to con- duct heat from the ep. in addition, provide the ep with a low-inductance path to electrical ground. the ep must be soldered to a ground plane on the pc board, either directly or through an array of plated via holes. MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch ______________________________________________________________________________________ 13 component value description c 1, c 2, c 7, c 8, c 10, c 11, c12 82pf microwave capacitors (0603) c3, c6, c9 10nf microwave capacitors (0603) c4* 6pf microwave capacitor (0603) c5** 2pf microwave capacitor (0603) l1* 4.7nh inductor (0603) r1 523 ? 1% resistor (0603) t1 1:1 if balun m/a-com: mabaes0029 u1 MAX2031 maxim ic table 1. typical application circuit component list * c4 and l1 installed only when mixer is used as an upconverter. ** c5 installed only when mixer is used as a downconverter.
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch 14 ______________________________________________________________________________________ MAX2031 4 5 3 2 12 11 13 lobias losel gnd 14 v cc if+ gnd gnd gnd 67 tap 910 20 19 17 16 gnd gnd note: l1 and c4 used only for upconverter operation. c5 used only for downconverter operation. v cc gnd gnd lo1 v cc if- 8 18 rf 1 15 lo2 v cc v cc c3 c2 l1 c4 rf c1 lo2 c12 lo1 c10 v cc c11 losel v cc c8 c9 v cc c7 c6 t1 1 3 4 5 if c5 r1 e.p. typical application circuit chip information transistor count: 1017 process: sige bicmos
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch ______________________________________________________________________________________ 15 package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation go to www.maxim-ic.com/packages .) qfn thin.eps d2 (nd-1) x e e d c pin # 1 i.d. (ne-1) x e e/2 e 0.08 c 0.10 c a a1 a3 detail a e2/2 e2 0.10 m c a b pin # 1 i.d. b 0.35x45? d/2 d2/2 l c l c e e l c c l k l l detail b l l1 e xxxxx marking h 1 2 21-0140 package outline, 16, 20, 28, 32, 40l thin qfn, 5x5x0.8mm -drawing not to scale- l e/2
MAX2031 high-linearity, 815mhz to 1000mhz upconversion/ downconversion mixer with lo buffer/switch maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 16 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ? 2005 maxim integrated products printed usa is a registered trademark of maxim integrated products, inc. package information (continued) (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation go to www.maxim-ic.com/packages .) common dimensions 3.35 3.15 t2855-1 3.25 3.35 3.15 3.25 max. 3.20 exposed pad variations 3.00 t2055-2 3.10 d2 nom. min. 3.20 3.00 3.10 min. e2 nom. max. ne nd pkg. codes 1. dimensioning & tolerancing conform to asme y14.5m-1994. 2. all dimensions are in millimeters. angles are in degrees. 3. n is the total number of terminals. 4. the terminal #1 identifier and terminal numbering convention shall conform to jesd 95-1 spp-012. details of terminal #1 identifier are optional, but must be located within the zone indicated. the terminal #1 identifier may be either a mold or marked feature. 5. dimension b applies to metallized terminal and is measured between 0.25 mm and 0.30 mm from terminal tip. 6. nd and ne refer to the number of terminals on each d and e side respectively. 7. depopulation is possible in a symmetrical fashion. 8. coplanarity applies to the exposed heat sink slug as well as the terminals. 9. drawing conforms to jedec mo220, except exposed pad dimension for t2855-1, t2855-3, and t2855-6. notes: symbol pkg. n l1 e e d b a3 a a1 k 10. warpage shall not exceed 0.10 mm. jedec t1655-1 3.20 3.00 3.10 3.00 3.10 3.20 0.70 0.80 0.75 4.90 4.90 0.25 0.25 0 -- 4 whhb 4 16 0.35 0.30 5.10 5.10 5.00 0.80 bsc. 5.00 0.05 0.20 ref. 0.02 min. max. nom. 16l 5x5 3.10 t3255-2 3.00 3.20 3.00 3.10 3.20 2.70 t2855-2 2.60 2.60 2.80 2.70 2.80 l 0.30 0.50 0.40 -- - -- - whhc 20 5 5 5.00 5.00 0.30 0.55 0.65 bsc. 0.45 0.25 4.90 4.90 0.25 0.65 - - 5.10 5.10 0.35 20l 5x5 0.20 ref. 0.75 0.02 nom. 0 0.70 min. 0.05 0.80 max. -- - whhd-1 28 7 7 5.00 5.00 0.25 0.55 0.50 bsc. 0.45 0.25 4.90 4.90 0.20 0.65 - - 5.10 5.10 0.30 28l 5x5 0.20 ref. 0.75 0.02 nom. 0 0.70 min. 0.05 0.80 max. -- - whhd-2 32 8 8 5.00 5.00 0.40 0.50 bsc. 0.30 0.25 4.90 4.90 0.50 - - 5.10 5.10 32l 5x5 0.20 ref. 0.75 0.02 nom. 0 0.70 min. 0.05 0.80 max. 0.20 0.25 0.30 down bonds allowed no yes 3.10 3.00 3.20 3.10 3.00 3.20 t2055-3 3.10 3.00 3.20 3.10 3.00 3.20 t2055-4 t2855-3 3.15 3.25 3.35 3.15 3.25 3.35 t2855-6 3.15 3.25 3.35 3.15 3.25 3.35 t2855-4 2.60 2.70 2.80 2.60 2.70 2.80 t2855-5 2.60 2.70 2.80 2.60 2.70 2.80 t2855-7 2.60 2.70 2.80 2.60 2.70 2.80 3.20 3.00 3.10 t3255-3 3.20 3.00 3.10 3.20 3.00 3.10 t3255-4 3.20 3.00 3.10 no no no no no no no no yes yes yes yes 3.20 3.00 t1655-2 3.10 3.00 3.10 3.20 yes no 3.20 3.10 3.00 3.10 t1655n-1 3.00 3.20 3.35 3.15 t2055-5 3.25 3.15 3.25 3.35 yes 3.35 3.15 t2855n-1 3.25 3.15 3.25 3.35 no 3.35 3.15 t2855-8 3.25 3.15 3.25 3.35 yes 3.20 3.10 t3255n-1 3.00 no 3.20 3.10 3.00 l 0.40 0.40 ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** see common dimensions table ? 0.15 11. marking is for package orientation reference only. h 2 2 21-0140 package outline, 16, 20, 28, 32, 40l thin qfn, 5x5x0.8mm -drawing not to scale- 12. number of leads shown are for reference only. 3.30 t4055-1 3.20 3.40 3.20 3.30 3.40 ** yes 0.05 00.02 0.60 0.40 0.50 10 ----- 0.30 40 10 0.40 0.50 5.10 4.90 5.00 0.25 0.35 0.45 0.40 bsc. 0.15 4.90 0.25 0.20 5.00 5.10 0.20 ref. 0.70 min. 0.75 0.80 nom. 40l 5x5 max. 13. lead centerlines to be at true position as defined by basic dimension "e", ? 0.05.

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