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` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?d n b y 3 1 3 2? #vt?{?$? 0$?t | uc? 0?-b? s g j ed?- t ? -b?]f?f| 8 6 1 n i {? 2 3 1 1 n i { h t n 0 f e h f d e n b 3 1 1 1 ? x d e n b [ j e f o ? ?6?{$?? ;| ??|? ) j g *|w$?;$???|? 4p?-2?]? ? t{c|?t? ?h|k?@?c ? h? r n b y 3 1 3 2y????|#vt [ ?* ?? ; ? |h ?t ?ht :y ?? t?4 $ [ucg s|?|?? ??y ti ) m p * ?? 9m q? [ ti ) m p *uc j$4 ??? u}] s g [ m p{%j]?|| ?rr? -?{ ? e b d{>??? #| j 0 r | 9m n b y 3 1 3 2?] ?v , 6 w?? ?g?/| 4 7[mr ? a fd|o r g o v? ) 7 n n y 7 n n *? . 5 1 d? , 9 6 d |k1 t *?h|??v-?i?z ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` b s g j ed?- t ? ]f?f x d e n b 9 6 1 ?6 ]f?f d e n b p o f u n d e n b 3 1 1 1 ?6 h t n ! 9 6 1 0 h t n ! : 1 1 ! f e h f ?6 ?^ ? ?{c ? x j n b y ? ?{c ? ?qr?#{? ; ?f? 5 k k?0g; a??c ) w p e * e p d t j t0?|? r b n? ?????; ) d n u t * ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` v ? 8 6 1 n i {? 2 3 1 1 n i {| s g? h *? ? ? h-?j]? ??? h? ? r 0?v ?+ y+?2 ? 4 7[m 7 n n y 7 n n| u r g oco v? ?-t ? ?+? ? o ]?f x d e n b| 7 6 e c d ! b d m s ? , 3 2 e c n|?o p j q 4 ? , 6 9 e c n|?o p j q 3 ? , 2 7 / 8 e c n|? p q 2 e c ? . 4 3 e c n|?oti ) m p *[ ' ? 5 4 / 6 e c d|?or4? ? . 2 8 5 e c n 0 i {|r ?t ? e d? 4 1 1 n i {| ?rr?-?{ ? e b d{> ??? #| j 0 r | 9m ? e d? ]r??? ???1 ? ?+? ? , 4 6 / 3 e c n|?o j j q 4 ? , 8 7 e c n|?o j j q 3 ? ? ! 4 1 e c n| j q 2 e c ? : / 3 e c|?o$?? r ? : / 4 e c|?o k ? 1 / 1 7 e c|?o j 0 rdy3 p ? 1 / 2 6 |?o j 0 r$?y3 p n b y 3 1 3 2 ?? *??{?$? 0$?t | 8 6 1 n i {? 2 3 1 1 n i {uc? 0? ________________________________________________________________ maxim integrated products 1 ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ? g? 19-3918; rev 0; 3/06 ta5 n b y j nu+^at?|ia n b y j ny !i|@?|?j t?%? |g ? ??@ia|-@?a ? t !ig??i?? \$?|eiv?l n b y j n |^at? ?s ? e- ["d|k?t?? 7 n b y j n|? x x x / n b y j n . j d / d p n / d o - ? e? part temp range pin-package pkg code MAX2021etx -40c to +85c 36 thin qfn-ep* (6mm x 6mm) t3666-2 MAX2021etx-t -40c to +85c 36 thin qfn-ep* (6mm x 6mm) t3666-2 MAX2021etx+ -40c to +85c 36 thin qfn-ep* (6mm x 6mm) t3666-2 MAX2021etx+t -40c to +85c 36 thin qfn-ep* (6mm x 6mm) t3666-2 * f q ! > ! a fd , > ! ? . u ! > ! rt? d e n b 3 1 1 15 u f m f d p n n v o j d b u j p o t ! j o e v t u s z ! b t t p d j b u j p o|?* j e f o5 n p u p s p m b - ! j o d /|?* d e n b p o f5 d e n b ! e f w f m p q n f o u ! h s p v q|* n b y 3 1 3 2 ?? *??{?$? 0$?t | 8 6 1 n i {? 2 3 1 1 n i {uc? 0? 2 _______________________________________________________________________________________ absolute maximum ratings stresses beyond those listed under absolute 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. vcc_ to gnd ........................................................-0.3v to +5.5v bbi+, bbi-, bbq+, bbq- to gnd...............-3.5v to (v cc + 0.3v) lo, rf to gnd maximum current ......................................30ma rf input power ...............................................................+30dbm baseband differential i/q input power (note a) ............+20dbm lo input power...............................................................+10dbm rbiaslo1 maximum current .............................................10ma rbiaslo2 maximum current .............................................10ma rbiaslo3 maximum current .............................................10ma ja (without air flow) ..........................................34c/w ja (2.5m/s air flow) .........................................................28c/w jc (junction to exposed paddle) ...................................8.5c/w junction temperature ......................................................+150c storage temperature range .............................-65c to +150c lead temperature (soldering 10s, non-lead free)...........+245c lead temperature (soldering 10s, lead free) ..................+260c dc electrical characteristics (MAX2021 typical application circuit , v cc = +4.75v to +5.25v, gnd = 0v, i/q inputs terminated into 100 differential, lo input terminat- ed into 50 , rf output terminated into 50 , 0v common-mode input, r1 = 432 , r2 = 619 , r3 = 332 , t c = -40c to +85c, unless otherwise noted. typical values are at v cc = +5v, v bbi = v bbq = 1.4v p-p , f iq = 1mhz, t c = +25c, unless otherwise noted.) (notes 1, 2) parameter symbol conditions min typ max units supply voltage v cc 4.75 5.00 5.25 v total supply current i total pins 3, 13, 15, 31, 33 all connected to v cc 230 271 315 ma total power dissipation 1355 1654 mw note a: maximum reliable continuous power applied to the baseband differential port is +20dbm from an external 100 source. ac electrical characteristics (modulator) (MAX2021 typical application circuit , v cc = +4.75v to +5.25v, gnd = 0v, i/q differential inputs driven from a 100 dc-coupled source, 0v common-mode input, p lo = 0dbm, 750mhz f lo 1200mhz, 50 lo and rf system impedance, r1 = 432 , r2 = 619 , r3 = 332 , t c = -40c to +85c. typical values are at v cc = +5v, v bbi = 1.4v p-p differential, v bbq = 1.4v p-p differential, f iq = 1mhz, f lo = 900mhz, t c = +25c, unless otherwise noted.) (notes 1, 2) parameter symbol conditions min typ max units baseband input baseb and input di fferential impedance f iq = 1mhz 53 bb common-mode input voltage range -3.5 0 +3.5 v lo input lo input frequency range 750 1200 mhz lo input drive -6 +3 dbm lo input return loss rf and if terminated (note 3) 12 db i/q mixer outputs f lo = 900mhz 21.1 output ip3 oip3 f bb1 = 1.8mhz, f bb2 = 1.9mhz f lo = 1000mhz 22.3 dbm output ip2 oip2 f bb1 = 1.8mhz, f bb2 = 1.9mhz 57.9 dbm output p1db f bb = 25mhz, p lo = 0dbm 16.7 dbm output power p out 0.7 dbm output power variation over temperature t c = -40c to +85c -0.016 db/c output-power flatness sweep f bb , p rf flatness for f bb from 1mhz to 50mhz 0.15 db n b y 3 1 3 2 ?? *??{?$? 0$?t | 8 6 1 n i {? 2 3 1 1 n i {uc? 0? _______________________________________________________________________________________ 3 parameter symbol conditions min typ max units rf input rf frequency f rf 750 1200 mhz conversion loss l c f bb = 25mhz (note 7) 9.2 db noise figure nf f lo = 900mhz 9.3 db noise figure under-blocking nf block f blocker = 900mhz, p rf = 11dbm, f rf = f lo = 890mhz (note 8) 17.8 db input third-order intercept iip3 f rf1 = 925mhz, f rf2 = 926mhz, f lo = 900mhz, p rf = p lo = 0dbm, f spur = 24mhz 35.2 dbm input second-order intercept iip2 f rf1 = 925mhz, f rf2 = 926mhz, f lo = 900mhz, p rf = p lo = 0dbm, f spur = 51mhz 76 dbm input 1db compression p 1db f if = 50mhz, f lo = 900mhz, p lo = 0dbm 30 dbm i/q gain mismatch f bb = 1mhz, f lo = 900mhz, p lo = 0dbm 0.06 db p lo = 0dbm 1.1 i/q phase mismatch f bb = 1mhz, f lo = 900mhz p lo = -3dbm 0.15 degrees ac electrical characteristics (demodulator) (MAX2021 typical application circuit when operated as a demodulator, v cc = +4.75v to +5.25v, gnd = 0v, differential baseband out- puts converted to a 50 single-ended output, p rf = p lo = 0dbm, 750mhz f lo 1200mhz, 50 lo and rf system impedance, r1 = 432 , r2 = 619 , r3 = 332 , t c = -40c to +85c. typical values are at v cc = +5v, t c = +25c, unless otherwise noted.) (notes 1, 2) ac electrical characteristics (modulator) (continued) (MAX2021 typical application circuit , v cc = +4.75v to +5.25v, gnd = 0v, i/q differential inputs driven from a 100 dc-coupled source, 0v common-mode input, p lo = 0dbm, 750mhz f lo 1200mhz, 50 lo and rf system impedance, r1 = 432 , r2 = 619 , r3 = 332 , t c = -40c to +85c. typical values are at v cc = +5v, v bbi = 1.4v p-p differential, v bbq = 1.4v p-p differential, f iq = 1mhz, f lo = 900mhz, t c = +25c, unless otherwise noted.) (notes 1, 2) parameter symbol conditions min typ max units aclr (1st adjacent channel 5mhz offset) single-carrier wcdma (note 4) 65 dbc lo leakage no external calibration, with each baseband input terminated in 50 -32 dbm p lo = 0dbm 30 39.6 sideband suppression no external calibration, f lo = 920mhz p lo = -3dbm 43.5 dbc output noise density e ach b aseb and inp ut ter mi nated i n 50 (n ote 5) -174 dbm/hz output noise floor p out = 0dbm, f lo = 900mhz (note 6) -168 dbm/hz rf return loss (note 3) 15 db note 1: guaranteed by design and characterization. note 2: t c is the temperature on the exposed paddle. note 3: parameter also applies to demodulator topology. note 4: single-carrier wcdma with 10.5db peak-to-average ratio at 0.1% complementary cumulative distribution function, p rf = -10dbm (p rf is chosen to give -65dbc aclr). note 5: no baseband drive input. measured with the inputs terminated in 50 . at low output levels, the output noise is thermal. note 6: the output noise versus p out curve has the slope of lo noise (ln dbc/hz) due to reciprocal mixing. note 7: conversion loss is measured from the single-ended rf input to single-ended combined baseband output. note 8: the lo noise (l = 10 (ln/10) ), determined from the modulator measurements can be used to deduce the noise figure under- blocking at operating temperature (tp in kelvin), f block = 1 + (lcn - 1) tp / to + lp block / (1000kto), where to = 290k, p block in mw, k is boltzmanns constant = 1.381 x 10 (-23) j/k, and lcn = 10 (lc/10) , lc is the conversion loss. noise figure under-blocking in db is nf block = 10 x log (f block ). refer to application note 3632 . n b y 3 1 3 2 ?? *??{?$? 0$?t | 8 6 1 n i {? 2 3 1 1 n i {uc? 0? 4 _______________________________________________________________________________________ ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?o ?+v (MAX2021 typical application circuit , v cc = +4.75v to +5.25v, gnd = 0v, i/q differential inputs driven from a 100 dc-coupled source, 0v common-mode input, p lo = 0dbm, 750mhz f lo 1200mhz, 50 lo and rf system impedance, r1 = 432 , r2 = 619 , r3 = 332 , t c = -40c to +85c. typical values are at v cc = +5v, v bbi = 1.4v p-p differential, v bbq = 1.4v p-p differential, f iq = 1mhz, f lo = 900mhz, t c = +25c, unless otherwise noted.) total supply current vs. temperature (t c ) MAX2021 toc01 temperature ( c) total supply current (ma) 60 35 10 -15 220 240 260 280 v cc = 4.75v v cc = 5.0v 300 200 -40 85 v cc = 5.25v aclr vs. output power per carrier MAX2021 toc02 output power per carrier (dbm) aclr (db) -17 -27 -37 -78 -76 -74 -72 -70 -68 -66 -64 -62 -60 -80 -47 -7 single-carrier wcdma adjacent channel alternate channel aclr vs. output power per carrier MAX2021 toc03 output power per carrier (dbm) aclr (db) -17 -27 -37 -78 -76 -74 -72 -70 -68 -66 -64 -62 -60 -80 -47 -7 adjacent channel alternate channel two-carrier wcdma aclr vs. output power per carrier MAX2021 toc04 output power per carrier (dbm) aclr (db) -17 -27 -37 -78 -76 -74 -72 -70 -68 -66 -64 -62 -60 -80 -47 -7 four-carrier wcdma adjacent channel alternate channel sideband suppression vs. lo frequency MAX2021 toc05 lo frequency (mhz) sideband suppression (dbc) 1125 1050 975 900 825 20 30 40 50 60 70 10 750 1200 p lo = -3dbm p lo = -6dbm p lo = 0dbm p lo = +3dbm sideband suppression vs. lo frequency MAX2021 toc06 lo frequency (mhz) sideband suppression (dbc) 1125 1050 975 900 825 20 30 40 50 60 70 10 750 1200 v cc = 4.75v, 5.0v, 5.25v sideband suppression vs. lo frequency MAX2021 toc07 lo frequency (mhz) sideband suppression (dbc) 1125 1050 975 900 825 20 30 40 50 60 70 10 750 1200 t c = +25 c t c = +85 c t c = -40 c output ip3 vs. lo frequency MAX2021 toc08 lo frequency (mhz) output ip3 (dbm) 1125 1050 975 900 825 15 20 25 30 10 750 1200 t c = -40 c t c = +85 c t c = +25 c p lo = 0dbm, v cc = 5.0v output ip3 vs. lo frequency MAX2021 toc09 lo frequency (mhz) output ip3 (dbm) 1125 1050 975 900 825 15 20 25 30 10 750 1200 v cc = 5.25v v cc = 5.0v v cc = 4.75v t c = +25 c modulator n b y 3 1 3 2 ?? *??{?$? 0$?t | 8 6 1 n i {? 2 3 1 1 n i {uc? 0? _______________________________________________________________________________________ 5 output ip3 vs. lo frequency MAX2021 toc10 lo frequency (mhz) output ip3 (dbm) 1125 1050 975 900 825 15 20 25 30 10 750 1200 p lo = +3dbm p lo = -3dbm p lo = -6dbm p lo = 0dbm t c = +25 c output ip3 vs. common-mode voltage MAX2021 toc11 common-mode voltage (v) output ip3 (dbm) 1.75 0 -1.75 21 22 23 24 25 26 20 -3.50 3.50 f lo = 900mhz, p lo = 0dbm output ip3 vs. common-mode voltage MAX2021 toc12 common-mode voltage (v) output ip3 (dbm) 1.75 0 -1.75 21 22 23 24 25 26 20 -3.50 3.50 f lo = 1000mhz output ip2 vs. lo frequency MAX2021 toc13 lo frequency (mhz) output ip2 (dbm) 1125 1050 975 900 825 50 60 70 80 40 750 1200 t c = +25 c t c = -40 c t c = +85 c output ip2 vs. lo frequency MAX2021 toc14 lo frequency (mhz) output ip2 (dbm) 1125 1050 975 900 825 50 60 70 80 40 750 1200 v cc = 5.0v v cc = 5.25v v cc = 4.75v output ip2 vs. lo frequency MAX2021 toc15 lo frequency (mhz) output ip2 (dbm) 1125 1050 975 900 825 50 60 70 80 40 750 1200 p lo = +3dbm p lo = -6dbm p lo = -3dbm p lo = 0dbm output ip2 vs. common-mode voltage MAX2021 toc16 common-mode voltage (v) output ip2 (dbm) 1.75 0 -1.75 60 65 70 75 80 55 -3.50 3.50 f lo = 900mhz output ip2 vs. common-mode voltage MAX2021 toc17 common-mode voltage (v) output ip2 (dbm) 1.75 0 -1.75 60 55 65 70 50 -3.50 3.50 f lo = 1000mhz modulator output power vs. input power MAX2021 toc18 input power (dbm) output power (dbm) 19 16 25 22 13 10 5 0 15 20 -5 10 28 input split between i and q, f if = 25mhz, f lo = 900mhz v cc = 4.75v, 5.0v, 5.25v ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?o ?+v )? * (MAX2021 typical application circuit , v cc = +4.75v to +5.25v, gnd = 0v, i/q differential inputs driven from a 100 dc-coupled source, 0v common-mode input, p lo = 0dbm, 750mhz f lo 1200mhz, 50 lo and rf system impedance, r1 = 432 , r2 = 619 , r3 = 332 , t c = -40c to +85c. typical values are at v cc = +5v, v bbi = 1.4v p-p differential, v bbq = 1.4v p-p differential, f iq = 1mhz, f lo = 900mhz, t c = +25c, unless otherwise noted.) modulator n b y 3 1 3 2 ?? *??{?$? 0$?t | 8 6 1 n i {? 2 3 1 1 n i {uc? 0? 6 _______________________________________________________________________________________ modulator output power vs. input power MAX2021 toc19 input power (dbm) output power (dbm) 19 16 25 22 13 10 5 0 15 20 -5 10 28 input split between i and q, f if = 25mhz, f lo = 900mhz p lo = -6dbm, -3dbm, 0dbm, +3dbm modulator output power vs. lo frequency MAX2021 toc20 lo frequency (mhz) output power (dbm) 975 900 1125 1050 825 1 -1 -3 3 5 -5 750 1200 t c = -40 c t c = +85 c t c = +25 c v bbi = v bbq = 1.4v p-p differential lo leakage vs. lo frequency MAX2021 toc21 lo frequency (mhz) lo leakage (dbm) 959 948 937 926 -90 -80 -70 -60 -50 -40 -100 915 970 p rf = -40dbm p rf = -7dbm p rf = -1dbm lo leakage nulled at p rf = -1dbm p rf = +5dbm lo leakage vs. lo frequency MAX2021 toc22 lo frequency (mhz) lo leakage (dbm) 959 948 937 926 -90 -80 -70 -60 -50 -40 -100 915 970 t c = -40 c t c = +85 c t c = +25 c p rf = -1dbm, lo leakage nulled at t c = +25 c lo leakage vs. lo frequency MAX2021 toc23 lo frequency (mhz) lo leakage (dbm) 959 948 937 926 -90 -80 -70 -60 -50 -40 -100 915 970 p lo = -6dbm p lo = +3dbm p lo = -3dbm p lo = 0dbm p rf = -1dbm, lo leakage nulled at p lo = 0dbm output noise vs. output power MAX2021 toc24 output power (dbm) output noise (dbm/hz) 10 5 0 -5 -10 -175 -170 -165 -160 -155 -150 -180 -15 15 t c = +25 c, f lo = 900mhz p lo = -6dbm p lo = -3dbm p lo = 0dbm p lo = +3dbm output noise vs. output power MAX2021 toc25 output power (dbm) output noise (dbm/hz) 10 5 0 -5 -10 -175 -170 -165 -160 -155 -150 -180 -15 15 p lo = 0dbm, f lo = 900mhz t c = +85 c t c = -40 c t c = +25 c ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?o ?+v )? * (MAX2021 typical application circuit , v cc = +4.75v to +5.25v, gnd = 0v, i/q differential inputs driven from a 100 dc-coupled source, 0v common-mode input, p lo = 0dbm, 750mhz f lo 1200mhz, 50 lo and rf system impedance, r1 = 432 , r2 = 619 , r3 = 332 , t c = -40c to +85c. typical values are at v cc = +5v, v bbi = 1.4v p-p differential, v bbq = 1.4v p-p differential, f iq = 1mhz, f lo = 900mhz, t c = +25c, unless otherwise noted.) modulator n b y 3 1 3 2 ?? *??{?$? 0$?t | 8 6 1 n i {? 2 3 1 1 n i {uc? 0? _______________________________________________________________________________________ 7 demodulator conversion loss vs. lo frequency MAX2021 toc26 lo frequency (mhz) demodulator conversion loss (db) 975 900 1125 1050 825 10 9 8 11 12 7 750 1200 p lo = 0dbm, v cc = 5.0v t c = +85 c t c = +25 c t c = -40 c demodulator input ip3 vs. lo frequency MAX2021 toc27 lo frequency (mhz) demodulator input ip3 (dbm) 975 900 1125 1050 825 36 34 32 38 40 30 750 1200 p lo = 0dbm, t c = +25 c v cc = 4.75v v cc = 5.25v v cc = 5.0v demodulator input ip3 vs. lo frequency MAX2021 toc28 lo frequency (mhz) demodulator input ip3 (dbm) 975 900 1125 1050 825 36 34 32 38 40 30 750 1200 p lo = 0dbm, v cc = 5.0v t c = +85 c t c = +25 c t c = -40 c demodulator input ip2 vs. lo frequency MAX2021 toc29 lo frequency (mhz) demodulator input ip2 (dbm) 1125 1050 975 900 825 60 70 80 90 50 750 1200 t c = -40 c t c = +85 c t c = +25 c p lo = 0dbm, v cc = 5.0v demodulator phase imbalance vs. lo frequency MAX2021 toc30 demodulator phase imbalance (deg) -8 -6 -4 -2 0 2 4 6 8 10 -10 lo frequency (mhz) 1125 1050 975 900 825 750 1200 p lo = -3dbm p lo = 0dbm p lo = +3dbm p lo = -6dbm MAX2021 toc31 -0.15 -0.10 -0.05 0 0.05 0.10 0.15 0.20 -0.20 demodulator amplitude imbalance vs. lo frequency demodulator amplitude imbalance (db) lo frequency (mhz) 1125 1050 975 900 825 750 1200 p lo = -6dbm, -3dbm, 0dbm, +3dbm ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ?o ?+v (MAX2021 typical application circuit , v cc = +4.75v to +5.25v, gnd = 0v, i/q differential inputs driven from a 100 dc-coupled source, 0v common-mode input, p rf = 5dbm, p lo = 0dbm, 750mhz f lo 1200mhz, 50 lo and rf system impedance, r1 = 432 , r2 = 619 , r3 = 332 , t c = -40c to +85c. typical values are at v cc = +5v, f lo = 900mhz, t c = +25c, unless otherwise noted.) lo port return loss vs. lo frequency MAX2021 toc32 lo frequency (mhz) lo port return loss (db) 975 900 1125 1050 825 +10 +15 +20 +5 0 +25 750 1200 p lo = -6dbm, -3dbm p lo = +3dbm p lo = 0dbm rf port return loss vs. lo frequency MAX2021 toc33 lo frequency (mhz) rf port return loss (db) 1130 1035 940 845 +40 +35 +30 +25 +20 +15 +10 +5 0 +45 750 1225 p lo = -6dbm, -3dbm, 0dbm, +3dbm if flatness vs. baseband frequency MAX2021 toc34 baseband frequency (mhz) if output power (dbm) 70 60 10 20 30 40 50 -11 -10 -9 -8 -7 -6 -5 -4 -12 080 f lo = 1000mhz f lo = 900mhz p lo = 0dbm demodulator n b y 3 1 3 2 ?? 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