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general description the max2043 high-linearity passive upconverter or downconverter mixer is designed to provide approxi- mately +31dbm of iip3, +67dbc of lo 2if spurious rejection, 7.8db of noise figure, 7.5db of conversion loss, and -52dbm of lo leakage for umts/wcdma, dcs, pcs, and wimax base-station applications. with a 1700mhz to 3000mhz rf frequency range and a 1900mhz to 3000mhz lo frequency range, this mixer is ideal for high-side lo injection architectures. in addition to offering excellent linearity and noise per- formance, the max2043 also yields a high level of com- ponent integration. the max2043 integrates baluns in the rf and lo ports, a dual-input lo-selectable switch, an lo buffer, and a double-balanced mixer. the on- chip baluns allow for a single-ended rf input for down- conversion (or rf output for upconversion), and single-ended lo inputs. the max2043 requires a typi- cal 0dbm lo drive, and supply current is rated at a typ- ical 108ma level. the if port is dc-coupled, making it ideal for direct conversion or modulation. as an upcon- verter, the device has low output noise floor of less than -160dbc/hz (-160dbm/hz when transmitting 0dbm lin- ear rf power). the max2043 is available in a 36-pin thin qfn pack- age (6mm x 6mm) with an exposed paddle. electrical performance is guaranteed over the extended -40? to +85? temperature range. applications umts/wcdma and 3g base stations dcs 1800 and edge base stations pcs 1900 and edge base stations cdmaone tm and cdma2000 base stations wimax base stations and customer premise equipment point-to-point microwave systems wireless local loop private mobile radio digital and spread-spectrum communication systems microwave links features +31dbm typical 3rd-order input intercept point +23dbm typical input 1db compression point 1700mhz to 3000mhz rf frequency range 1900mhz to 3000mhz lo frequency range dc to 350mhz if frequency range 7.5db typical conversion loss 7.8db typical noise figure -160dbc/hz lo noise -52dbm lo leakage at rf port 67dbc lo 2if spurious suppression -3dbm to +6dbm lo drive +5v single-supply operation built-in spdt lo switch with 43db lo1 to lo2 isolation and 50ns switching time internal rf and lo baluns for single-ended inputs external current-setting resistor provides option for operating mixer in reduced power/reduced performance mode lead-free package available max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer ________________________________________________________________ maxim integrated products 1 ordering information part temp range pin- package pkg code MAX2043ETX -40 c to +85 c 36 tqfn-ep* (6mm x 6mm) t3666-2 MAX2043ETX-t -40 c to +85 c 36 tqfn-ep* (6mm x 6mm) t3666-2 MAX2043ETX+ -40 c to +85 c 36 tqfn-ep* (6mm x 6mm) t3666-2 MAX2043ETX+t -40 c to +85 c 36 tqfn-ep* (6mm x 6mm) t3666-2 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. pin configuration and typical application circuit appear at end of data sheet. evaluation kit available cdmaone is a trademark of cdma development group. cdma2000 is a registered trademark of telecommunications industry association. * ep = exposed paddle. + denotes lead-free package. -t = tape-and-reel package. 19-3908; rev 0; 12/05
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer 2 _______________________________________________________________________________________ absolute maximum ratings dc electrical characteristics (max2043 typical application circuit , v cc = +4.75v to +5.25v, no rf signals applied, if+ and if- dc grounded through a trans- former, t c = -40 c to +85 c. a 360 ? resistor is connected from lo_adj to gnd. typical values are at v cc = +5v, t c = +25 c, unless otherwise noted.) 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 balun).....................50ma lo1, lo2 to gnd ...............................................................0.3v rftap, if+, if- to gnd ..............................-0.3v to (v cc + 0.3v) losel to gnd ...........................................-0.3v to (v cc + 0.3v) rf, if, and lo input power** .........................................+20dbm lo_adj current....................................................................5ma continuous power dissipation (t a = +70 c) 36-pin tqfn (derated 30.3mw/ c above +70 c) ......2200mw operating temperature range ...........................-40 c to +85 c junction temperature ......................................................+150 c jc ................................................................................+7.4 c/w ja .................................................................................+38 c/w storage temperature range .............................-65 c to +150 c lead temperature (soldering, 10s) .................................+300 c ** maximum reliable continuous input power applied to the rf, if, and lo ports of this device is +15dbm from a 50 ? source. parameter symbol conditions min typ max units supply voltage v cc 4.75 5 5.25 v supply current i cc total supply current 108 140 ma losel logic 0 input voltage v il 0.8 v losel logic 1 input voltage v ih 2v losel logic input current i ih and i il -10 +10 a ac electrical characteristics (downconverter operation) (max2043 typical application circuit , 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 = 1700mhz to 3000mhz, f lo = 1900mhz to 3000mhz, f if = 200mhz, f rf < f lo , t c = -40 c to +85 c, unless otherwise noted. typical values are at v cc = +5v, p rf = 0dbm, p lo = 0dbm, f rf = 1900mhz, f lo = 2100mhz, f if = 200mhz, t c = +25 c, unless otherwise noted.) (note 1) parameter symbol conditions min typ max units rf frequency f rf 1700 3000 mhz lo frequency f lo 1900 3000 mhz if frequency (notes 1, 2) f if 0 350 mhz dcs 1800: p rf = -10dbm, p lo = 0dbm, f if = 200mhz, f rf = 1710mhz to 1785mhz 7.5 pcs 1900: p rf = -10dbm, p lo = 0dbm, f if = 200mhz, f rf = 1850mhz to 1910mhz 7.5 small-signal conversion loss l c umts 2100: p rf = -10dbm, p lo = 0dbm, f if = 200mhz, f rf = 1920mhz to 1980mhz 7.5 db dcs 1800: f rf = 1710mhz to 1785mhz 0.5 pcs 1900: f rf = 1850mhz to 1910mhz 0.5 conversion loss variation from nominal umts 2100: f rf = 1920mhz to 1980mhz 0.5 db
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer _______________________________________________________________________________________ 3 parameter symbol conditions min typ max units conversion loss variation over temperature t c = -40 c to +85 c 0.0075 db/ c t c = +25 c, dcs 1800: f rf = 1710mhz to 1785mhz 7.8 t c = +25 c, pcs 1900: f rf = 1850mhz to 1910mhz 7.8 noise figure, single sideband nf t c = +25 c, umts 2100: f rf = 1920mhz to 1980mhz 7.8 db noise figure under blocking condition (note 3) p blocker = +5dbm at 2100mhz, f rf = 2000mhz, f lo = 2190mhz, p lo = 0dbm 19 db input compression point (note 4) ip1db high-side injection +23 dbm 3rd-order input intercept point iip3 high-side injection, f rf1 = 1900mhz, f rf2 = 1901mhz, 0dbm per tone at rf port 31 dbm 3rd-order input intercept point variation t c = -40 c to +85 c 0.75 db f rf = 1900mhz, f lo = 2100mhz, f spur = 2000mhz, p rf = 0dbm, 2lo - 2rf spur p lo = 0dbm 63 dbc f rf = 1900mhz, f lo = 2100mhz, f spur = 2033.333mhz, p rf = 0dbm, 3lo - 3rf spur p lo = 0dbm 67 dbc lo drive (note 5) p lo -3 0 +6 dbm lo1-to-lo2 port isolation p lo1 = p lo2 = +3dbm, f if = 200mhz (note 6) 43 db lo leakage at rf port p lo = +3dbm, f lo = 2260mhz -52 -38 dbm lo switching time 50% of losel to if settled within 2 degrees 50 ns lo leakage at if port p lo = +3dbm -35 dbm rf-to-if isolation p lo = +3dbm 38 db rf input return loss lo on and if terminated 17 db lo input return loss rf and if terminated 14 db if return loss rf and lo terminated in 50 ? , f if = 200mhz (note 7) 20 db ac electrical characteristics (downconverter operation) (continued) (max2043 typical application circuit , 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 = 1700mhz to 3000mhz, f lo = 1900mhz to 3000mhz, f if = 200mhz, f rf < f lo , t c = -40 c to +85 c, unless otherwise noted. typical values are at v cc = +5v, p rf = 0dbm, p lo = 0dbm, f rf = 1900mhz, f lo = 2100mhz, f if = 200mhz, t c = +25 c, unless otherwise noted.) (note 1)
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer 4 _______________________________________________________________________________________ ac electrical characteristics (upconverter operation) (max2043 typical application circuit , v cc = +4.75v to +5.25v, p lo = -3dbm to +3dbm, p if = 0dbm, f rf = 1700mhz to 3000mhz, f lo = 1900mhz to 3000mhz, f if = 200mhz, f rf = f lo - f if , t c = -40 c to +85 c, unless otherwise noted. typical values are at v cc = +5v, p if = 0dbm, p lo = 0dbm, f rf = 2170mhz, f lo = 2260mhz, f if = 90mhz, t c = +25 c, unless otherwise noted.) (note 3) parameter symbol conditions min typ max units input compression point ip1db 23 dbm two tones: f if1 = 90mhz, f if2 = 91mhz, p if = +5dbm/tone, f lo = 2230mhz, 3rd-order input intercept point iip3 p lo = 0dbm 28 dbm lo - 2if 60 67 lo 2if spur lo + 2if 60 69 dbc lo - 3if 63 lo 3if spur lo + 3if 64 dbc output noise floor p out = 0dbm -160 dbm/hz note 1: all limits reflect losses of external components. output measurement taken at if port of typical application circuit . note 2: the lower if frequency limit of 0mhz is limited by the external if transformer. note 3: measured with external lo source noise filtered so its noise floor is not a contributor. measured with: f rf = 2000mhz, f blocker = 2100mhz, f lo = 2190mhz, using a 190mhz saw filter on the if port. this specification reflects the effects of all snr degradations in the mixer, including the lo noise as defined in maxim application note 2021. note 4: maximum reliable continuous input power applied to the rf or if port of this device is +15dbm from a 50 ? source. note 5: typical operating characteristics show lo drive extended to +6dbm note 6: measured if port at if frequency. f lo1 and f lo2 are offset by 1mhz. note 7: if return loss can be optimized by external matching components. typical operating characteristics (max2043 typical application circuit , c2 not installed, rftap = gnd, v cc = +5.0v, p lo = 0dbm, losel = 0 (lo2 selected), p rf = 0dbm, f lo > f rf , f if = 200mhz, unless otherwise noted.) downconverter curves conversion loss vs. rf frequency max2043 toc01 rf frequency (mhz) conversion loss (db) 2100 1900 1700 5 6 7 8 9 4 1500 2300 t c = +85 c t c = -40 c t c = +25 c conversion loss vs. rf frequency max2043 toc02 rf frequency (mhz) conversion loss (db) 2100 1900 1700 5 6 7 8 9 4 1500 2300 p lo = -3dbm, 0dbm, +3dbm conversion loss vs. rf frequency max2043 toc03 rf frequency (mhz) conversion loss (db) 2100 1900 1700 5 6 7 8 9 3 4 1500 2300 v cc = 4.75v, 5.0v, 5.25v
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer _______________________________________________________________________________________ 5 typical operating characteristics (continued) (max2043 typical application circuit , c2 not installed, rftap = gnd, v cc = +5.0v, p lo = 0dbm, losel = 0 (lo2 selected), p rf = 0dbm, f lo > f rf , f if = 200mhz, unless otherwise noted.) downconverter curves input ip3 vs. rf frequency max2043 toc04 rf frequency (mhz) input ip3 (dbm) 2100 1900 1700 29 31 33 35 23 25 27 1500 2300 t c = +25 c t c = -40 c t c = +85 c input ip3 vs. rf frequency max2043 toc05 rf frequency (mhz) input ip3 (dbm) 2100 1900 1700 29 31 33 35 23 25 27 1500 2300 p lo = +3dbm p lo = -3dbm p lo = 0dbm input ip3 vs. rf frequency max2043 toc06 rf frequency (mhz) input ip3 (dbm) 2100 1900 1700 29 31 33 35 23 25 27 1500 2300 v cc = 5.25v v cc = 5.0v v cc = 4.75v noise figure vs. rf frequency max2043 toc07 rf frequency (mhz) noise figure (db) 2200 2350 2050 1900 1750 6 7 8 9 11 10 5 1600 2500 t c = +85 c t c = -40 c t c = +25 c noise figure vs. rf frequency max2043 toc08 rf frequency (mhz) noise figure (db) 2200 2350 2050 1900 1750 6 7 8 9 11 10 5 1600 2500 p lo = -3dbm, 0dbm, +3dbm noise figure vs. rf frequency max2043 toc09 rf frequency (mhz) noise figure (db) 2200 2350 2050 1900 1750 6 7 8 9 10 11 5 1600 2500 v cc = 5.0v v cc = 4.75v v cc = 5.25v 2lo - 2rf response vs. rf frequency max2043 toc10 rf frequency (mhz) 2lo - 2rf response (dbc) 2100 1900 1700 55 65 75 85 45 1500 2300 t c = -40 c t c = +85 c t c = +25 c p rf = 0dbm 2lo - 2rf response vs. rf frequency max2043 toc11 rf frequency (mhz) 2lo - 2rf response (dbc) 2100 1900 1700 55 65 75 85 45 1500 2300 p lo = +3dbm p lo = 0dbm p lo = -3dbm p rf = 0dbm 2lo - 2rf response vs. rf frequency max2043 toc12 rf frequency (mhz) 2lo - 2rf response (dbc) 2100 1900 1700 55 65 75 85 45 1500 2300 p rf = 0dbm v cc = 4.75v v cc = 5.0v v cc = 5.25v
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer 6 _______________________________________________________________________________________ typical operating characteristics (continued) (max2043 typical application circuit , c2 not installed, rftap = gnd, v cc = +5.0v, p lo = 0dbm, losel = 0 (lo2 selected), p rf = 0dbm, f lo > f rf , f if = 200mhz, unless otherwise noted.) downconverter curves 2lo - 2rf response vs. rf frequency losel = "1" (lo1 selected) max2043 toc13 rf frequency (mhz) 2lo - 2rf response (dbc) 2100 1900 1700 55 65 75 85 45 1500 2300 t c = +25 c t c = +25 c, +85 c t c = -40 c p rf = 0dbm 2lo - 2rf response vs. rf frequency losel = "1" (lo1 selected) max2043 toc14 rf frequency (mhz) 2lo - 2rf response (dbc) 2100 1900 1700 55 65 75 85 45 1500 2300 p rf = 0dbm p lo = 0dbm p lo = +3dbm p lo = -3dbm 2lo - 2rf response vs. rf frequency losel = "1" (lo1 selected) max2043 toc15 rf frequency (mhz) 2lo - 2rf response (dbc) 2100 1900 1700 55 65 75 85 45 1500 2300 p rf = 0dbm v cc = 5.25v v cc = 4.75v, 5.0v, 5.25v 3lo - 3rf response vs. rf frequency max2043 toc16 rf frequency (mhz) 3lo - 3rf response (dbc) t c = +85 c t c = -40 c t c = +25 c p rf = 0dbm 2100 1900 1700 55 65 75 85 45 1500 2300 3lo - 3rf response vs. rf frequency max2043 toc17 rf frequency (mhz) 3lo - 3rf response (dbc) p lo = 0dbm, +3dbm p lo = -3dbm p rf = 0dbm 2100 1900 1700 55 65 75 85 45 1500 2300 3lo - 3rf response vs. rf frequency max2043 toc18 rf frequency (mhz) 3lo - 3rf response (dbc) 2100 1900 1700 55 65 75 85 45 1500 2300 p rf = 0dbm v cc = 5.25v v cc = 5.0v v cc = 4.75v input p 1db vs. rf frequency max2043 toc19 rf frequency (mhz) input p 1db (dbm) 2100 1900 1700 22 21 20 23 24 25 27 26 1500 2300 t c = +85 c t c = -40 c t c = +25 c p lo = 0dbm p lo = +3dbm p lo = -3dbm input p 1db vs. rf frequency max2043 toc20 rf frequency (mhz) input p 1db (dbm) 2100 1900 1700 22 21 20 23 24 25 27 26 1500 2300 input p 1db vs. rf frequency max2043 toc21 rf frequency (mhz) input p 1db (dbm) 2100 1900 1700 22 21 20 23 24 25 27 26 1500 2300 v cc = 5.25v v cc = 5.0v v cc = 4.75v
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer _______________________________________________________________________________________ 7 typical operating characteristics (continued) (max2043 typical application circuit , c2 not installed, rftap = gnd, v cc = +5.0v, p lo = 0dbm, losel = 0 (lo2 selected), p rf = 0dbm, f lo > f rf , f if = 200mhz, unless otherwise noted.) downconverter curves lo switch isolation vs. lo frequency max2043 toc22 lo frequency (mhz) lo switch isolation (db) 2300 2100 1900 1700 40 50 60 30 1500 2500 t c = -40 c t c = +85 c t c = +25 c lo switch isolation vs. lo frequency max2043 toc23 lo frequency (mhz) lo switch isolation (db) 2300 2100 1900 1700 40 50 60 30 1500 2500 p lo = -3dbm, 0dbm, +3dbm lo switch isolation vs. lo frequency max2043 toc24 lo frequency (mhz) lo switch isolation (db) 2300 2100 1900 1700 40 50 60 30 1500 2500 v cc = 4.75v, 5.0v, 5.25v lo leakage at if port vs. lo frequency max2043 toc25 lo frequency (mhz) lo leakage (dbm) 2300 2100 1900 -40 -30 -20 -50 1700 2500 t c = +25 c t c = +85 c t c = -40 c lo leakage at if port vs. lo frequency max2043 toc26 lo frequency (mhz) lo leakage (dbm) 2300 2100 1900 -40 -30 -20 -50 1700 2500 p lo = -3dbm, 0dbm, +3dbm lo leakage at if port vs. lo frequency max2043 toc27 lo frequency (mhz) lo leakage (dbm) 2300 2100 1900 -40 -30 -20 -50 1700 2500 v cc = 4.75v, 5.0v, 5.25v lo leakage at rf port vs. lo frequency max2043 toc28 lo frequency (mhz) lo leakage at rf port (dbm) 2300 1900 2100 1700 -80 -60 -70 -40 -50 -20 0 -10 -30 1500 2500 t c = +25 c t c = +85 c t c = -40 c lo leakage at rf port vs. lo frequency max2043 toc29 lo frequency (mhz) lo leakage at rf port (dbm) 2300 2100 1900 1700 -80 -60 -70 -40 -50 -20 -30 0 -10 1500 2500 p lo = +3dbm p lo = 0dbm p lo = -3dbm lo leakage at rf port vs. lo frequency max2043 toc30 lo frequency (mhz) lo leakage at rf port (dbm) 2300 2100 1900 1700 -80 -60 -70 -40 -50 -20 -30 0 -10 1500 2500 v cc = 4.75v, 5.0v, 5.25v
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer 8 _______________________________________________________________________________________ typical operating characteristics (continued) (max2043 typical application circuit , c2 not installed, rftap = gnd, v cc = +5.0v, p lo = 0dbm, losel = 0 (lo2 selected), p rf = 0dbm, f lo > f rf , f if = 200mhz, unless otherwise noted.) downconverter curves rf-to-if isolation vs. rf frequency max20343 toc31 rf frequency (mhz) rf-to-if isolation (db) 2100 1900 1700 20 25 30 35 40 45 50 1500 2300 t c = +25 c t c = +85 c t c = -40 c rf-to-if isolation vs. rf frequency max2043 toc32 rf frequency (mhz) rf-to-if isolation (db) 2100 1900 1700 20 25 30 35 40 45 50 1500 2300 p lo = -3dbm, 0dbm, +3dbm rf-to-if isolation vs. rf frequency max2043 toc33 rf frequency (mhz) rf-to-if isolation (db) 2100 1900 1700 20 25 30 35 40 45 50 1500 2300 v cc = 4.75v, 5.0v, 5.25v rf port return loss vs. rf frequency max2043 toc34 rf frequency (mhz) rf port return loss (db) 2500 2000 1500 30 25 20 15 10 5 0 1000 3000 p lo = -3dbm, 0dbm, +3dbm if port return loss vs. if frequency max2043 toc35 if frequency (mhz) if port return loss (db) 400 500 300 200 100 30 25 20 15 10 5 0 0 v cc = 5.0v v cc = 4.75v v cc = 5.25v low freq match set by t1 lo selected return loss vs. lo frequency max2043 toc36 lo frequency (mhz) lo selected return loss (db) 2500 1500 2000 30 25 20 15 10 5 0 1000 3000 p lo = 0dbm, +3dbm p lo = -3dbm lo unselected return loss vs. lo frequency max2043 toc37 lo frequency (mhz) lo unselected return loss (db) 2500 1500 2000 25 20 15 10 0 5 30 1000 3000 p lo = -3dbm, 0dbm, +3dbm supply current vs. temperature (t c ) max2043 toc38 temperature ( c) supply cuirrent (ma) 60 35 10 -15 80 90 100 110 120 130 70 -40 85 v cc = 5.25v v cc = 5.0v v cc = 4.75v
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer _______________________________________________________________________________________ 9 typical operating characteristics (max2043 typical application circuit , c2 = 22pf, v cc = +5.0v, p lo = 0dbm, losel = 1 (lo1 selected), p if = 0dbm, f rf = f lo - f if , f if = 90mhz, unless otherwise noted.) upconverter curves conversion loss vs. rf frequency max2043 toc39 rf frequency (mhz) conversion loss (db) 2250 2100 1950 1800 1650 5 6 7 8 9 4 1500 2400 t c = +85 c t c = -40 c t c = +25 c conversion loss vs. rf frequency max2043 toc40 rf frequency (mhz) conversion loss (db) 2250 2100 1950 1800 1650 5 6 7 8 9 4 1500 2400 p lo = -3dbm, 0dbm, +3dbm, +6dbm conversion loss vs. rf frequency max2043 toc41 rf frequency (mhz) conversion loss (db) 2250 2100 1950 1800 1650 5 6 7 8 9 4 1500 2400 v cc = 4.75v, 5.0v, 5.25v input ip3 vs. rf frequency max2043 toc42 rf frequency (mhz) input ip3 (dbm) 2250 2100 1950 1800 1650 31 33 35 37 25 27 29 1500 2400 t c = +85 c t c = -40 c t c = +25 c input ip3 vs. rf frequency max2043 toc43 rf frequency (mhz) input ip3 (dbm) 2250 2100 1950 1800 1650 31 33 35 37 25 27 29 1500 2400 p lo = -3dbm p lo = 0dbm, +3dbm, +6dbm input ip3 vs. rf frequency max2043 toc44 rf frequency (mhz) input ip3 (dbm) 2250 2100 1950 1800 1650 31 33 35 37 25 27 29 1500 2400 v cc = 4.75v, 5.0v, 5.25v lo + 2if rejection vs. rf frequency max2043 toc45 rf frequency (mhz) lo + 2if rejection (dbc) 2250 2100 1950 1800 1650 55 65 75 85 45 1500 2400 t c = +85 c t c = -40 c t c = +25 c p if = 0dbm lo + 2if rejection vs. rf frequency max2043 toc46 rf frequency (mhz) lo + 2if rejection (dbc) 2250 2100 1950 1800 1650 55 65 75 85 45 1500 2400 p if = 0dbm p lo = +3dbm p lo = +6dbm p lo = 0dbm p lo = -3dbm lo + 2if rejection vs. rf frequency max2043 toc47 rf frequency (mhz) lo + 2if rejection (dbc) 2250 2100 1950 1800 1650 55 65 75 85 45 1500 2400 p if = 0dbm v cc = 5.25v v cc = 5.0v v cc = 4.75v
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer 10 ______________________________________________________________________________________ typical operating characteristics (continued) (max2043 typical application circuit , c2 = 22pf, v cc = +5.0v, p lo = 0dbm, losel = 1 (lo1 selected), p if = 0dbm, f rf = f lo - f if , f if = 90mhz, unless otherwise noted.) upconverter curves lo - 2if rejection vs. rf frequency max2043 toc48 rf frequency (mhz) lo - 2if rejection (dbc) 2250 2100 1950 1800 1650 55 65 75 85 45 1500 2400 t c = +85 c t c = -40 c t c = +25 c p if = 0dbm lo - 2if rejection vs. rf frequency max2043 toc49 rf frequency (mhz) lo - 2if rejection (dbc) 2250 2100 1950 1800 1650 55 65 75 85 45 1500 2400 p if = 0dbm p lo = +3dbm p lo = 0dbm p lo = -3dbm p lo = +6dbm lo - 2if rejection vs. rf frequency max2043 toc50 rf frequency (mhz) lo - 2if rejection (dbc) 2250 2100 1950 1800 1650 55 65 75 85 45 1500 2400 p if = 0dbm v cc = 4.75v v cc = 5.25v v cc = 5.0v lo + 3if rejection vs. rf frequency max2043 toc51 rf frequency (mhz) lo + 3if rejection (dbc) 2250 2100 1950 1800 1650 55 45 65 75 85 1500 2400 p if = 0dbm t c = +25 c t c = +85 c t c = -40 c lo + 3if rejection vs. rf frequency max2043 toc52 rf frequency (mhz) lo + 3if rejection (dbc) 2250 2100 1950 1800 1650 55 45 65 75 85 1500 2400 p if = 0dbm p lo = -3dbm, 0dbm, +3dbm, +6dbm lo + 3if rejection vs. rf frequency max2043 toc53 rf frequency (mhz) lo + 3if rejection (dbc) 2250 2100 1950 1800 1650 55 45 65 75 85 1500 2400 p if = 0dbm v cc = 4.75v, 5.0v, 5.25v lo - 3if rejection vs. rf frequency max2043 toc54 rf frequency (mhz) lo - 3if rejection (dbc) 2250 2100 1950 1800 1650 55 45 65 75 85 1500 2400 p if = 0dbm t c = +25 c, +85 c t c = -40 c lo - 3if rejection vs. rf frequency max2043 toc55 rf frequency (mhz) lo - 3if rejection (dbc) 2250 2100 1950 1800 1650 55 45 65 75 85 1500 2400 p if = 0dbm p lo = -3dbm, 0dbm, +3dbm, +6dbm lo - 3if rejection vs. rf frequency max2043 toc56 rf frequency (mhz) lo - 3if rejection (dbc) 2250 2100 1950 1800 1650 55 45 65 75 85 1500 2400 p if = 0dbm v cc = 4.75v, 5.0v, 5.25v
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer ______________________________________________________________________________________ 11 typical operating characteristics (continued) (max2043 typical application circuit , c2 = 22pf, v cc = +5.0v, p lo = 0dbm, losel = 1 (lo1 selected), p if = 0dbm, f rf = f lo - f if , f if = 90mhz, unless otherwise noted.) upconverter curves lo leakage at rf port vs. lo frequency max2043 toc57 lo frequency (mhz) lo leakage at rf port (dbm) 2350 2200 2050 1900 1750 -60 -50 -40 -30 -70 1600 2500 t c = +85 c t c = +25 c t c = -40 c 2500 lo leakage at rf port vs. lo frequency max2043 toc58 lo frequency (mhz) lo leakage at rf port (dbm) 2350 2200 2050 1900 1750 -60 -50 -40 -30 -70 1600 p lo = 0dbm p lo = +3dbm p lo = +6dbm p lo = -3dbm lo leakage at rf port vs. lo frequency max2043 toc59 lo frequency (mhz) lo leakage at rf port (dbm) 2350 2200 2050 1900 1750 -60 -50 -40 -30 -70 1600 2500 v cc = 4.75v, 5.0v, 5.25v if leakage at rf vs. lo frequency max2043 toc60 lo frequency (mhz) if leakage (dbm) 2350 2200 2050 1900 1750 -100 -90 -80 -70 -60 1600 2500 t c = -40 c, +25 c, +85 c if leakage at rf vs. lo frequency max2043 toc61 lo frequency (mhz) if leakage (dbm) 2350 2200 2050 1900 1750 -100 -90 -80 -70 -60 1600 2500 p lo = -3dbm, 0dbm, +3dbm, +6dbm if leakage at rf vs. lo frequency max2043 toc62 lo frequency (mhz) if leakage (dbm) 2350 2200 2050 1900 1750 -100 -90 -80 -70 -60 1600 2500 v cc = 4.75v, 5.0v, 5.25v
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer 12 ______________________________________________________________________________________ pin description pin name function 1 5, 7, 10, 11, 12, 15, 18, 20, 22, 24, 25, 26, 28, 29, 31 36 gnd these pins have no internal connection and can be left open or connected to ground. it is suggested that these pins be grounded back to the exposed paddle where possible to improve pin- to-pin isolation. 6, 16, 21, 30 v cc power-supply connection. connected to external power supply (5v). bypass to gnd with a 0.01f capacitor as close to the pin as possible. 8 rftap center tap of the internal rf balun. connected to internal rf balun center tap. 9 rf single-ended 50 ? rf input/output. dc grounded internally. 13, 14 if+ , if- ( p or ts) differential if ports (50 ? ). 0v common-mode voltage. 17 lo_adj adjust lo drive. a 360 ? 1% resistor connected from this pin to ground sets the lo driver bias. a 1.1v dc voltage appears across this resistor. 19 lo1 local oscillator input 1. drive losel high to select lo1. 23 losel local oscillator select. logic 0 selects lo2 and 1 selects lo1. 27 lo2 local oscillator input 2. drive losel low to select lo2. ep gnd exposed paddle. ground the exposed paddle using multiple ground vias. detailed description the max2043 can operate as either a downconverter or an upconverter mixer that provides 7.5db of conver- sion loss with a typical 7.8db noise figure. iip3 is +31dbm for both upconversion and downconversion. the integrated baluns and matching circuitry allow for 50 ? single-ended interfaces to the rf port and two lo ports. the rf port can be used as an input for down- conversion or an output for upconversion. a single- pole, double-throw (spdt) switch provides 50ns switching time between the two lo inputs with 43db of lo-to-lo isolation and -52dbm of lo leakage. furthermore, the integrated lo buffer provides a high drive level to the mixer core, reducing the lo drive required at the max2043 s inputs to a -3dbm to +6dbm range. the if port incorporates a differential output for downconversion, which is ideal for providing enhanced iip2 performance. for upconversion, the if port is a dif- ferential input. specifications are guaranteed over broad frequency ranges to allow for use in umts/wcdma and 2g/2.5g/3g dcs 1800, pcs 1900, cdma2000, and wimax base stations. the max2043 is specified to operate over a 1700mhz to 3000mhz rf input range, a 1900mhz to 3000mhz lo range, and an if range of near 0mhz to 350mhz. the external if component sets the lower frequency range. rf port and balun for using the max2043 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. the rf return loss is typically 15db over the entire 1700mhz to 3000mhz rf frequency range. for upconverter operation, the rf port is a single-ended output similarly matched to 50 ? . an optional l-c bpf can be installed at the rf port to improve some upconverter performance. lo inputs, buffer, and balun the max2043 is optimized for a 1900mhz to 3000mhz lo range. as an added feature, the max2043 includes an internal lo spdt switch that can be used for fre- quency-hopping applications. the switch selects one of the two single-ended lo ports, allowing the external oscillator to settle on a particular frequency before it is switched in. lo switching time is typically less than 50ns, which is more than adequate for typical gsm applications. if frequency-hopping is not employed, simply set the switch to either of the lo inputs. the switch is controlled by a digital input (losel): logic- high selects lo1, logic-low selects lo2. lo1 and lo2 inputs are internally matched to 50 ? , requiring only a 22pf dc-blocking capacitor. to avoid damage to the
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer ______________________________________________________________________________________ 13 part, voltage must be applied to v cc before digital logic is applied to losel. a two-stage internal lo buffer allows a wide input power range for the lo drive. all guaranteed specifica- tions are for an lo signal power from -3dbm to +6dbm. the on-chip low-loss balun along with an lo buffer dri- ves the double-balanced mixer. all interfacing and matching components from the lo inputs to the if out- puts are integrated on-chip. high-linearity mixer the core of the max2043 is a double-balanced, high-per- formance passive mixer. exceptional linearity is provided by the large lo swing from the on-chip lo buffer. differential if the max2043 mixer has a dc to 350mhz if frequency range where the low-end frequency depends on the frequency response of the external if components. note that these differential ports are ideal for providing enhanced iip2 performance. single-ended if applica- tions require a 1:1 balun to transform the 50 ? differen- tial if impedance to 50 ? single-ended system. after the balun, the if return loss is better than 20db. the user can use a differential if amplifier on the mixer if ports, but a dc block is required on both if+ and if- ports to keep external dc from entering the if ports of the mixer. the mixer requires a dc ground return on either the rf tap pin (short tap to ground) or on each if differ- ential port (1k ? resistor or an inductor from each if dif- ferential pin to ground). applications information input and output matching the rf and lo inputs are internally matched to 50 ? . no matching components are required. return loss at the rf port is typically 17db and return loss at the lo ports are typically 14db. rf and lo inputs require only dc-blocking capacitors for interfacing. 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 on-chip lo buffer is optimized by fine-tuning the off-chip resistor on pin 17 (r1). the cur- rent in the buffer amplifier can be reduced by raising the value of this resistor but performance (especially ip3) degrades. doubling the value of this resistor reduces the current in the device by approximately half. additional tuning components the max2043 mixer performance can be further enhanced with the use of external components. the values of these components depend on the application and the frequency band of interest. consult the factory for further details. 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 max2043 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 and tap with the capacitors shown in the typical application circuit . see table 1. place the tap bypass capacitor to ground within 100 mils of the tap pin. exposed pad rf/thermal considerations the exposed paddle (ep) of the max2043 s 36-pin thin qfn-ep package provides a low thermal-resistance path to the die. it is important that the pc board on which the max2043 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.
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer 14 ______________________________________________________________________________________ top view max2043 5 4 3 2 1 gnd exposed paddle gnd gnd gnd gnd 6 v cc 7 gnd 8 rftap 9 rf if- if+ gnd gnd gnd gnd v cc lo_adj gnd gnd gnd gnd gnd gnd gnd v cc gnd gnd 14 13 12 11 10 15 16 17 18 32 33 34 35 36 31 30 29 28 23 24 25 26 27 22 21 20 19 losel gnd gnd gnd lo2 gnd v cc gnd lo1 pin configuration chip information process: sige bicmos component value description c1 4pf microwave capacitor (0402) c2*, c4, c6, c8 22pf microwave capacitors (0402) c3 not used microwave capacitor (0603) c5, c7, c9 0.01f microwave capacitors (0402) r1 360 ? 360 ? 1% resistor (0402) t1 1:1 transformer (50:50) m/a-com mabaes0029 u1 max2043 maxim ic table 1. component list referring to the typical application circuit * ground pin 8 for downconverter operation.
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer ______________________________________________________________________________________ 15 max2043 u1 5 4 3 2 1 gnd exposed paddle gnd gnd gnd gnd 6 v cc v cc c4 c3 c2 c1 t1 if c5 r1 c8 lo select c7 c6 3 14 5 rf 7 gnd 8 rftap 9 rf 14 13 12 11 10 if- if+ gnd gnd gnd 15 gnd 16 v cc v cc 17 lo_adj 18 gnd 32 33 34 35 36 gnd gnd gnd gnd gnd 31 gnd 30 v cc 29 gnd 28 gnd 23 24 25 26 27 losel gnd gnd gnd lo2 lo2 22 gnd 21 v cc 20 gnd 19 lo1 lo1 v cc v cc c9 note: pins 1, 2, 3, 4, 5, 7, 10, 11, 12, 15, 18, 20, 22, 24, 25, 26, 28, 29, 31, 32, 33, 34, 35, 36 of u1 have no internal connections. these pins can be connected back to the grounded exposed paddle where possible to improve pin-to-pin isolation. typical application circuit
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer 16 ______________________________________________________________________________________ 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 e e l l a1 a2 a e/ 2 e d/2 d e2/2 e2 (ne-1) x e (nd-1) x e e d2/2 d2 b k k l c l c l c l c l f 1 2 21-0141 package outline 36, 40, 48l thin qfn, 6x6x0.8m m l1 l e
max2043 1700mhz to 3000mhz high-linearity, low lo leakage base-station rx/tx mixer 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. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 17 ? 2005 maxim integrated products printed usa is a registered trademark of maxim integrated products, inc. m. reduta 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 .) 8. coplanarity applies to the exposed heat sink slug as well as the terminals. 6. nd and ne refer to the number of terminals on each d and e side respectively. 5. dimension b applies to metallized terminal and is measured between 0.25 mm and 0.30 mm from terminal tip. 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. 9. drawing conforms to jedec mo220, except for 0.4mm lead pitch package t4866-1. 7. depopulation is possible in a symmetrical fashion. 3. n is the total number of terminals. 2. all dimensions are in millimeters. angles are in degrees. 1. dimensioning & tolerancing conform to asme y14.5m-1994. notes: 10. warpage shall not exceed 0.10 mm. f 2 2 21-0141 package outline 36, 40, 48l thin qfn, 6x6x0.8m m 11. marking is for package orientation reference only. 12. number of leads shown for reference only.

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