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general description the MAX2066 high-linearity digital variable-gain amplifi- er (vga) is a monolithic sige bicmos attenuator and amplifier designed to interface with 50 systems oper- ating in the 50mhz to 1000mhz frequency range (see the typical application circuit ). the digital attenuator is controlled as a slave peripheral using either the spi- compatible interface or a parallel bus with 31db total adjustment range in 1db steps. an added feature allows ?apid-fire?gain selection between each of four steps, preprogrammed by the user through the spi- compatible interface. the 2-pin control allows the user to quickly access any one of four customized attenua- tion states without reprogramming the spi bus. because each stage has its own rf input and rf output, this component can be configured to either optimize nf (amplifier configured first), or oip3 (amplifier last). the device? performance features include 22db amplifier gain (amplifier only), 5.2db nf at maximum gain (includes attenuator insertion loss), and a high oip3 level of +42.4dbm. each of these features makes the MAX2066 an ideal vga for numerous receiver and transmitter applications. in addition, the MAX2066 operates from a single +5v supply with full performance, or a single +3.3v supply with slightly reduced performance, and has an adjustable bias to trade current consumption for linearity performance. this device is available in a compact 40- pin thin qfn package (6mm x 6mm) with an exposed pad. electrical performance is guaranteed over the extended temperature range (t c = -40? to +85?). applications if and rf gain stages cellular band wcdma and cdma2000 base stations gsm 850/gsm 900 edge base stations wimax and lte base stations and customer premise equipment fixed broadband wireless access wireless local loop military systems video-on-demand (vod) and docsis - compliant edge qam modulation cable modem termination systems (cmts) rfid handheld and portal readers features ? 50mhz to 1000mhz rf frequency range ? pin-compatible family includes max2065 (analog/digital vga) max2067 (analog vga) ? 20.5db (typ) maximum gain ? 0.4db gain flatness over 100mhz bandwidth ? 31db gain range ? supports four ?apid-fire?preprogrammed attenuator states quickly access any one of four customized attenuation states without reprogramming the spi bus ideal for fast-attack, high-level blocker protection prevents adc overdrive condition ? excellent linearity (configured with amplifier last) +42.4dbm oip3 +65dbm oip2 +19dbm output 1db compression point -68dbc hd2 -88dbc hd3 ? 5.2db typical noise figure (nf) ? fast, 25ns digital switching ? very low digital vga amplitude overshoot/ undershoot ? single +5v supply (optional +3.3v operation) ? external current-setting resistors provide option for operating device in reduced-power/ reduced-performance mode MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga ________________________________________________________________ maxim integrated products 1 ordering information 19-4057; rev 0; 3/08 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. + denotes a lead-free package. * ep = exposed pad. t = tape and reel. cdma2000 is a registered trademark of telecommunications industry association. docsis and cablelabs are registered trademarks of cable television laboratories, inc. (cablelabs?. part temp range pin- package MAX2066etl+ -40? to +85? 40 thin qfn-ep* MAX2066etl+t -40? to +85? 40 thin qfn-ep* spi is a trademark of motorola, inc. pin configuration appears at end of data sheet.
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 2 _______________________________________________________________________________________ absolute maximum ratings +3.3v supply dc electrical characteristics ( typical application circuit , high-current (hc) mode, v cc = v dd = +3.0v to +3.6v, t c = -40? to +85?. typical values are at v cc = v dd = +3.3v and t c = +25?, 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. note 1: based on junction temperature t j = t c + ( jc x v cc x i cc ). this formula can be used when the temperature of the exposed pad is known while the device is soldered down to a printed-circuit board (pcb). see the applications information section for details. the junction temperature must not exceed +150?. note 2: junction temperature t j = t a + ( ja x v cc x i cc ). this formula can be used when the ambient temperature of the pcb is known. the junction temperature must not exceed +150?. note 3: package thermal resistances were obtained using the method described in jedec specification jesd51-7, using a 4-layer board. for detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial . note 4: t c is the temperature on the exposed pad of the package. t a is the ambient temperature of the device and pcb. vcc_ to gnd ........................................................-0.3v to +5.5v vdd_logic, data, cs , clk, ser/par..............................................-0.3v to (vcc_ + 0.3v) state_a, state_b, d0?4 ....................-0.3v to (vcc_ + 0.3v) amp_in, amp_out .................................-0.3v to (vcc_ + 0.3v) atten_in, atten_out........................................-1.2v to +1.2v rset to gnd.........................................................-0.3v to +1.2v rf input power (atten_in, atten_out).....................+20dbm rf input power (amp_in)...............................................+18dbm continuous power dissipation (note 1) ...............................6.5w ja (notes 2, 3)..............................................................+38?/w jc (note 3) ...................................................................+10?/w operating temperature range (note 4) .....t c = -40? to +85? maximum junction temperature .....................................+150? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) .................................+300? parameter symbol conditions min typ max units supply voltage v cc (note 5) 3.0 3.3 3.6 v supply current i cc 58 80 ma logic inputs (data, cs , clk, ser/par, state_a, state_b, d0 d4) input high voltage v ih 2v input low voltage v il 0.8 v +5v supply dc electrical characteristics ( typical application circuit , v cc = v dd = +4.75v to +5.25v, t c = -40? to +85?. typical values are at v cc = v dd = +5v and t c = +25?, unless otherwise noted.) parameter symbol conditions min typ max units supply voltage v cc 4.75 5 5.25 v low-current (lc) mode 70 90 supply current i cc high-current (hc) mode 121 144 ma logic inputs (data, cs , clk, ser/par, state_a, state_b, d0 d4) input high voltage v ih 3v input low voltage v il 0.8 v input current logic-high i ih -1 +1 ? input current logic-low i il -1 +1 ?
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga _______________________________________________________________________________________ 3 +5v supply ac electrical characteristics ( typical application circuit , v cc = v dd = +4.75 to +5.25v, hc mode with attenuator set for maximum gain, 50mhz f rf 1000mhz, t c = -40? to +85?. typical values are at v cc = v dd = +5.0v, hc mode, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless otherwise noted.) (note 6) parameter symbol conditions min typ max units rf frequency range f rf (notes 5, 7) 50 1000 mhz 200mhz 20.5 350mhz, t c = +25? 18.6 19.9 21.1 450mhz 19.5 750mhz 18.1 small-signal gain g 900mhz 17.4 db gain variation vs. temperature -0.004 db/? gain flatness vs. frequency any 100mhz frequency band from 50mhz to 500mhz 0.4 db 200mhz 5.2 350mhz, t c = +25? (note 5) 5.5 6.6 450mhz 5.6 750mhz 6.2 noise figure nf 900mhz 6.4 db total attenuation range 31 db output second-order intercept point oip2 p out = 0dbm/tone, f = 1mhz, f 1 + f 2 65 dbm 200mhz 42.4 350mhz 40.4 450mhz 39.5 750mhz 37.3 p out = 0dbm/tone, h c m od e, f = 1m h z 900mhz 36.2 200mhz 40 350mhz 38 450mhz 37 750mhz 35 output third-order intercept point oip3 p out = 0dbm/tone, lc mode, f = 1mhz 900mhz 33 dbm +3.3v supply ac electrical characteristics ( typical application circuit , v cc = v dd = +3.0v to +3.6v, t c = -40? to +85?. typical values are at v cc = v dd = +3.3v, hc mode with attenuator set for maximum gain, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless otherwise noted.) (note 6) parameter symbol conditions min typ max units rf frequency range f rf (notes 5, 7) 50 1000 mhz small-signal gain g 20 db output third-order intercept point oip3 p out = 0dbm/tone, maximum gain setting 38 dbm noise figure nf maximum gain setting 5.6 db total attenuation range 31 db
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 4 _______________________________________________________________________________________ +5v supply ac electrical characteristics (continued) ( typical application circuit , v cc = v dd = +4.75 to +5.25v, hc mode with attenuator set for maximum gain, 50mhz f rf 1000mhz, t c = -40? to +85?. typical values are at v cc = v dd = +5.0v, hc mode, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless otherwise noted.) (note 6) parameter symbol conditions min typ max units output -1db compression point p 1db f rf = 350mhz, t c = +25? (note 5, 8) 17 18.7 dbm second harmonic p out = +3dbm, f in = 200mhz, t c = +25? (note 5) -60 -68 dbc third harmonic p out = +3dbm, f in = 200mhz, t c = +25? (note 5) -72 -88 dbc group delay includes ev kit pcb trace delay 0.8 ns input return loss 50 source, maximum gain setting 23 db output return loss 50 load, maximum gain setting 18 db digital attenuator insertion loss 2.5 db input second-order intercept point iip2 p rf1 = 0dbm, p rf2 = 0dbm, f = 1mhz, f 1 + f 2 52 dbm input third-order intercept point iip3 p rf1 = 0dbm, p rf2 = 0dbm, f = 1mhz 41 dbm attenuation range 31.2 db step size 1db relative step accuracy 0.2 db absolute step accuracy 0.45 db 0db to 16db 4.8 24db 8 insertion phase step f rf = 170mhz 31db 10.8 d eg r ees et = 15ns 1.0 amplitude overshoot/undershoot between any two states et = 40ns 0.05 db 31db to 0db 25 switching speed rf settled to within ?.1db 0db to 31db 21 ns input return loss 50 source, maximum gain setting 19 db output return loss 50 load, maximum gain setting 19 db serial peripheral interface (spi) maximum clock speed f clk 20 mhz data-to-clock setup time t cs 2ns data-to-clock hold time t ch 2.5 ns clock-to- cs setup time t es 3ns cs positive pulse width t ew 7ns cs setup time t ews 3.5 ns clock pulse width t cw 5ns note 5: guaranteed by design and characterization. note 6: all limits include external component losses. output measurements are performed at rf output port of the typical application circuit . note 7: operating outside this range is possible, but with degraded performance of some parameters. note 8: it is advisable not to continuously operate the vga rf input above +15dbm.
gain vs. rf frequency MAX2066 toc03 rf frequency (mhz) gain (db) 850 450 650 250 16 17 18 20 19 21 22 23 15 50 1050 t c = +25 c t c = -40 c t c = +85 c gain vs. rf frequency MAX2066 toc03 rf frequency (mhz) gain (db) 850 450 650 250 16 17 18 20 19 21 22 23 15 50 1050 v cc = 4.75v, 5.00v, 5.25v attenuator relative error vs. rf frequency MAX2066 toc05 rf frequency (mhz) relative error (db) 850 450 650 250 -0.50 0 0.50 1.00 -0.75 -0.25 0.25 0.75 -1.00 50 1050 input match over attenuator setting vs. rf frequency MAX2066 toc07 rf frequency (mhz) input match (db) 850 450 650 250 -30 -20 -10 0 -50 -40 50 1050 0db 1db 31db 4db 2db 8db 16db output match over attenuator setting vs. rf frequency MAX2066 toc08 rf frequency (mhz) output match (db) 850 450 650 250 -15 -10 -5 0 -30 -25 -20 50 1050 0db, 1db, 2db, 4db 16db, 31db 8db reverse isolation over attenuator setting vs. rf frequency MAX2066 toc09 rf frequency (mhz) reverse isolation (db) 850 450 650 250 -50 -40 -30 -70 -60 50 1050 attenuator 0db attenuator 31db supply current vs. supply voltage MAX2066 toc01 v cc (v) supply current (ma) 5.125 5.000 4.875 110 120 130 140 150 100 4.750 5.250 t c = +85 c t c = +25 c t c = -40 c gain over attenuator setting vs. rf frequency MAX2066 toc04 rf frequency (mhz) gain (db) 850 450 650 250 -15 5 15 25 -25 50 1050 attenuator absolute error vs. rf frequency MAX2066 toc06 rf frequency (mhz) absolute error (db) 850 450 650 250 -0.50 0 0.50 1.00 -0.75 -0.25 0.25 0.75 -2.00 -1.25 -1.50 -1.75 -1.00 50 1050 MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga _______________________________________________________________________________________ 5 typical operating characteristics ( v cc = v dd = +5.0v, hc mode , digital attenuator set for maximum gain, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless oth- erwise noted.)
output ip3 vs. rf frequency MAX2066 toc16 rf frequency (mhz) output ip3 (dbm) 45 50 55 40 35 30 50 450 850 1050 650 250 v cc = 4.75v v cc = 5.25v v cc = 5.00v p out = 0dbm/tone output ip3 vs. rf frequency MAX2066 toc15 rf frequency (mhz) output ip3 (dbm) 45 50 55 40 35 30 50 450 850 1050 650 250 t c = -40 c t c = +85 c t c = +25 c p out = 0dbm/tone output p1db vs. rf frequency MAX2066 toc14 rf frequency (mhz) output p1db (dbm) 19 20 21 18 17 16 15 50 450 850 1050 650 250 v cc = 4.75v v cc = 5.25v v cc = 5.00v noise figure vs. rf frequency MAX2066 toc12 rf frequency (mhz) noise figure (db) 850 1050 650 450 7 8 9 6 5 4 3 2 50 250 v cc = 4.75v, 5.00v, 5.25v attenuator phase change between states vs. rf frequency MAX2066 toc10 rf frequency (mhz) s21 phase change (deg) 850 450 650 250 40 50 60 -10 30 20 10 0 50 1050 positive phase = electrically shorter referenced to high gain state MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 6 _______________________________________________________________________________________ noise figure vs. rf frequency MAX2066 toc11 rf frequency (mhz) noise figure (db) 850 450 650 250 7 8 9 6 5 4 3 2 50 1050 t c = +25 c t c = -40 c t c = +85 c output p1db vs. rf frequency MAX2066 toc13 rf frequency (mhz) output p1db (dbm) 19 20 21 18 17 16 15 50 450 850 1050 650 250 t c = +85 c t c = +25 c t c = -40 c output ip3 vs. attenuator state MAX2066 toc17 attenuator state (db) output ip3 (dbm) 43 44 45 42 41 40 0 12202832 24 416 8 t c = -40 c, +25 c, +85 c, lsb, usb p out = 0dbm/tone f rf = 200mhz 2nd harmonic vs. rf frequency MAX2066 toc18 rf frequency (mhz) 2nd harmonic (dbc) 60 70 80 50 40 50 450 850 1050 650 250 t c = +85 c t c = +25 c t c = -40 c p out = 3dbm typical operating characteristics (continued) ( v cc = v dd = +5.0v, hc mode , digital attenuator set for maximum gain, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless oth- erwise noted.)
oip2 vs. rf frequency MAX2066 toc25 rf frequency (mhz) oip2 (dbm) 250 450 650 850 75 55 70 65 60 40 50 45 50 1050 v cc = 4.75v v cc = 5.00v p out = 0dbm/tone v cc = 5.25v 3rd harmonic vs. rf frequency MAX2066 toc22 rf frequency (mhz) 3rd harmonic (dbc) 250 450 650 850 110 70 100 90 80 60 50 1050 v cc = 4.75v v cc = 5.00v v cc = 5.25v p out = 3dbm MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga _______________________________________________________________________________________ 7 2nd harmonic vs. rf frequency MAX2066 toc19 rf frequency (mhz) 2nd harmonic (dbc) 250 450 650 850 80 50 70 60 40 50 1050 v cc = 5.25v p out = 3dbm v cc = 4.75v v cc = 5.00v 2nd harmonic vs. attenuator state MAX2066 toc20 attenuator state (db) 2nd harmonic (dbc) 71 68 66 70 69 67 65 0 8 16 24 32 12 20 28 4 t c = -40 c t c = +25 c p out = 3dbm f rf = 200mhz t c = +85 c 3rd harmonic vs. rf frequency MAX2066 toc21 rf frequency (mhz) 3rd harmonic (dbc) 110 80 60 100 90 70 50 450 850 1050 650 250 t c = +25 c t c = +85 c p out = 3dbm t c = -40 c 3rd harmonic vs. attenuator state MAX2066 toc23 attenuator state (db) 3rd harmonic (dbc) 100 80 95 90 85 70 75 0 8 16 24 32 4122028 t c = -40 c t c = +25 c t c = +85 c p out = 3dbm f rf = 200mhz oip2 vs. rf frequency MAX2066 toc24 rf frequency (mhz) oip2 (dbm) 250 450 650 850 75 55 70 65 60 40 50 45 50 1050 t c = +25 c t c = +85 c t c = -40 c p out = 0dbm/tone oip2 vs. attenuator state MAX2066 toc26 attenuator state (db) oip2 (dbm) 68 60 66 64 62 58 0 8 16 24 32 4122028 t c = +25 c t c = +85 c t c = -40 c p out = 0dbm/tone f rf = 200mhz typical operating characteristics (continued) ( v cc = v dd = +5.0v, hc mode , digital attenuator set for maximum gain, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless oth- erwise noted.)
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 8 _______________________________________________________________________________________ gain vs. rf frequency (attenuator only) rf frequency (mhz) gain (db) 250 450 650 850 0 -4 -5 -1 -2 -3 50 1050 v cc = 4.75v, 5.00v, 5.25v MAX2066 toc28 gain vs. rf frequency (attenuator only) MAX2066 toc27 rf frequency (mhz) gain (db) 0 -4 -1 -2 -3 -5 50 450 850 1050 650 250 t c = +25 c t c = +85 c t c = -40 c typical operating characteristics ( v cc = v dd = +5.0v, digital attenuator only , maximum gain, p in = -20dbm and t c = +25?, unless otherwise noted.)
MAX2066 output match over attenuator setting vs. rf frequency (low-current mode) rf frequency (mhz) output match (db) 1050 650 250 0 -30 -5 -15 -20 -10 -25 50 450 850 16db, 31db 8db 0db, 1db, 2db, 4db MAX2066 toc33 input match over attenuator setting vs. rf frequency (low-current mode) MAX2066 toc32 rf frequency (mhz) input match (db) 850 450 650 250 -30 -20 -10 0 -50 -40 50 1050 0db 1db 31db 4db 2db 8db 16db gain vs. rf frequency (low-current mode) rf frequency (mhz) gain (db) 250 450 650 850 23 19 15 22 21 20 16 18 17 50 1050 v cc = 4.75v, 5.00v, 5.25v MAX2066 toc31 gain vs. rf frequency (low-current mode) rf frequency (mhz) gain (db) 23 15 21 19 17 22 20 18 16 50 450 850 1050 650 250 t c = -40 c t c = +85 c t c = +25 c MAX2066 toc30 supply current vs. supply voltage (low-current mode) v cc (v) supply current (ma) 4.875 5.000 5.125 85 55 75 65 4.750 5.250 t c = -40 c t c = +85 c t c = +25 c MAX2066 toc29 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga _______________________________________________________________________________________ 9 typical operating characteristics ( v cc = v dd = +5.0v, lc mode , digital attenuator set for maximum gain, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless oth- erwise noted.) noise figure vs. rf frequency (low-current mode) MAX2066 toc34 rf frequency (mhz) noise figure (db) 850 450 650 250 4 5 6 8 7 9 10 11 3 2 50 1050 t c = +25 c t c = -40 c t c = +85 c noise figure vs. rf frequency (low-current mode) MAX2066 toc35 rf frequency (mhz) noise figure (db) 850 450 650 250 2 3 4 6 5 7 8 9 1 50 1050 v cc = 4.75v, 5.00v, 5.25v output p1db vs. rf frequency (low-current mode) MAX2066 toc36 rf frequency (mhz) output p1db (dbm) 850 450 650 250 16 17 18 15 14 13 50 1050 t c = +25 c t c = -40 c t c = +85 c output p1db vs. rf frequency (low-current mode) MAX2066 toc37 rf frequency (mhz) output p1db (dbm) 850 450 650 250 16 17 18 15 14 13 50 1050 v cc = 5.00v v cc = 5.25v v cc = 4.75v
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 10 ______________________________________________________________________________________ 3rd harmonic vs. attenuator state (low-current mode) attenuator state (db) 3rd harmonic (dbc) 32 90 75 85 80 08 28 16 24 20 412 p out = 3dbm f rf = 200mhz MAX2066 toc46 t c = -40 c t c = +25 c t c = +85 c output ip3 vs. rf frequency (low-current mode) rf frequency (mhz) output ip3 (dbm) 1050 650 250 45 25 30 35 40 50 450 850 p out = 0dbm/tone t c = -40 c t c = +85 c t c = +25 c MAX2066 toc38 output ip3 vs. rf frequency (low-current mode) rf frequency (mhz) output ip3 (dbm) 1050 650 250 45 25 40 35 30 50 450 850 v cc = 4.75v v cc = 5.25v p out = 0dbm/tone v cc = 5.00v MAX2066 toc39 output ip3 vs. attenuator state (low-current mode) MAX2066 toc40 attenuator state (db) output ip3 (dbm) 41 43 45 39 37 35 0 12202832 24 416 8 t c = +85 c lsb t c = -40 c lsb t c = -40 c usb p out = 0dbm/tone f rf = 200mhz t c = +25 c usb t c = +25 c lsb t c = +85 c usb 2nd harmonic vs. rf frequency (low-current mode) rf frequency (mhz) 2nd harmonic (dbc) 1050 650 250 80 40 70 60 50 50 450 850 p out = 3dbm t c = -40 c t c = +25 c t c = +85 c MAX2066 toc41 2nd harmonic vs. rf frequency (low-current mode) rf frequency (mhz) 2nd harmonic (dbc) 1050 650 250 80 40 70 60 50 50 450 850 p out = 3dbm v cc = 5.00v v cc = 5.25v v cc = 4.75v MAX2066 toc42 2nd harmonic vs. attenuator state (low-current mode) MAX2066 toc43 attenuator state (db) 2nd harmonic (dbc) 71 72 73 70 69 68 67 0 12202832 24 416 8 p out = 3dbm f rf = 200mhz t c = +25 c t c = +85 c t c = -40 c 3rd harmonic vs. rf frequency (low-current mode) rf frequency (mhz) 3rd harmonic (dbc) 250 450 650 850 1050 110 60 90 100 80 70 50 p out = 3dbm MAX2066 toc44 t c = -40 c t c = +25 c t c = +85 c 3rd harmonic vs. rf frequency (low-current mode) rf frequency (mhz) 3rd harmonic (dbc) 1050 650 250 110 60 100 90 80 70 50 450 850 p out = 3dbm v cc = 5.00v v cc = 5.25v v cc = 4.75v MAX2066 toc45 typical operating characteristics (continued) ( v cc = v dd = +5.0v, lc mode , digital attenuator set for maximum gain, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless oth- erwise noted.)
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga ______________________________________________________________________________________ 11 typical operating characteristics (continued) ( v cc = v dd = +5.0v, lc mode , digital attenuator set for maximum gain, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless oth- erwise noted.) oip2 vs. rf frequency (low-current mode) rf frequency (mhz) oip2 (dbm) 1050 650 250 75 40 70 65 60 55 50 45 50 450 850 MAX2066 toc47 t c = -40 c p out = 0dbm/tone t c = +85 c t c = +25 c oip2 vs. rf frequency (low-current mode) rf frequency (mhz) oip2 (dbm) 1050 650 250 75 40 70 65 60 55 50 45 50 450 850 MAX2066 toc48 p out = 0dbm/tone v cc = 5.00v v cc = 4.75v v cc = 5.25v oip2 vs. attenuator state (low-current mode) MAX2066 toc49 attenuator state (db) oip2 (dbm) 66 68 70 64 62 60 0 12202832 24 416 8 p out = 0dbm/tone f rf = 200mhz t c = +25 c t c = -40 c t c = +85 c
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 12 ______________________________________________________________________________________ noise figure vs. rf frequency rf frequency (mhz) noise figure (db) 250 450 650 850 1050 9 8 2 7 6 5 4 3 50 MAX2066 toc55 t c = +85 c v cc = 3.3v t c = +25 c t c = -40 c noise figure vs. rf frequency rf frequency (mhz) noise figure (db) 250 450 650 850 9 7 3 2 8 6 5 4 50 1050 MAX2066 toc56 v cc = 3.6v v cc = 3.3v v cc = 3.0v output p1db vs. rf frequency rf frequency (mhz) output p1db (dbm) 250 450 650 850 1050 17 16 9 10 15 14 12 13 11 50 MAX2066 toc57 t c = -40 c t c = +25 c t c = +85 c v cc = 3.3v output p1db vs. rf frequency rf frequency (mhz) output p1db (dbm) 250 450 650 850 1050 17 16 9 10 15 14 12 13 11 50 MAX2066 toc58 v cc = 3.3v v cc = 3.6v v cc = 3.0v supply current vs. supply voltage v cc (v) supply current (ma) 3.60 3.45 3.30 3.15 80 70 40 60 50 3.00 MAX2066 toc50 t c = +25 c t c = +85 c t c = -40 c gain vs. rf frequency rf frequency (mhz) gain (db) 1050 650 250 23 15 22 21 20 19 18 17 16 50 450 850 MAX2066 toc51 t c = -40 c v cc = 3.3v t c = +85 c t c = +25 c gain vs. rf frequency rf frequency (mhz) gain (db) 1050 650 250 23 15 22 21 20 19 18 17 16 50 450 850 MAX2066 toc52 v cc = 3.6v v cc = 3.3v v cc = 3.0v input match over attenuator setting vs. rf frequency MAX2066 toc53 rf frequency (mhz) input match (db) 850 450 650 250 -30 -20 -10 0 -50 -40 50 1050 0db 1db v cc = 3.3v 31db 4db 2db 8db 16db output match over attenuator setting vs. rf frequency rf frequency (mhz) output match (db) 250 450 650 850 1050 0 -5 -30 -10 -15 -20 -25 50 MAX2066 toc54 v cc = 3.3v 0db, 1db, 2db, 4db 8db 16db, 31db typical operating characteristics ( v cc = v dd = +3.3v, hc mode , digital attenuator set for maximum gain, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless oth- erwise noted.)
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga ______________________________________________________________________________________ 13 2nd harmonic vs. attenuator state attenuator state (db) 2nd harmonic (dbc) 4 8 12 20 16 24 28 32 70 50 65 60 55 0 MAX2066 toc64 t c = +85 c t c = -40 c t c = +25 c v cc = 3.3v f rf = 200mhz p out = 3dbm 3rd harmonic vs. rf frequency rf frequency (mhz) 3rd harmonic (dbc) 1050 650 250 110 50 100 80 60 90 70 50 450 850 MAX2066 toc65 t c = +85 c t c = -40 c t c = +25 c v cc = 3.3v p out = 3dbm 3rd harmonic vs. rf frequency rf frequency (mhz) 3rd harmonic (dbc) 250 450 650 850 1050 110 50 100 90 80 70 60 50 MAX2066 toc66 v cc = 3.3v v cc = 3.0v p out = 3dbm v cc = 3.6v output ip3 vs. rf frequency rf frequency (mhz) output ip3 (dbm) 250 450 650 850 1050 50 45 20 40 35 30 25 50 MAX2066 toc59 t c = +25 c t c = +85 c t c = -40 c v cc = 3.3v p out = 0dbm/tone output ip3 vs. rf frequency rf frequency (mhz) output ip3 (dbm) 1050 650 250 50 45 40 20 35 30 25 50 450 850 MAX2066 toc60 v cc = 3.3v v cc = 3.6v v cc = 3.0v p out = 0dbm/tone output ip3 vs. attenuator state MAX2066 toc61 attenuator state (db) output ip3 (dbm) 38 39 40 37 36 35 34 0 12202832 24 416 8 t c = +85 c lsb v cc = 3.3v f rf = 200mhz p out = 0dbm/tone t c = +25 c usb t c = -40 c usb t c = +25 c lsb t c = +85 c usb t c = -40 c lsb 2nd harmonic vs. rf frequency rf frequency (mhz) 2nd harmonic (dbc) 250 450 650 850 1050 80 30 70 60 50 40 50 MAX2066 toc62 t c = -40 c v cc = 3.3v p out = 3dbm t c = +85 c t c = +25 c 2nd harmonic vs. rf frequency rf frequency (mhz) 2nd harmonic (dbc) 250 450 650 850 1050 80 30 70 60 50 40 50 MAX2066 toc63 v cc = 3.0v v cc = 3.3v v cc = 3.6v p out = 3dbm typical operating characteristics (continued) ( v cc = v dd = +3.3v, hc mode , digital attenuator set for maximum gain, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless oth- erwise noted.)
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 14 ______________________________________________________________________________________ 3rd harmonic vs. attenuator state attenuator state (db) 3rd harmonic (dbc) 32 85 70 80 75 0 8 16 24 28 41220 MAX2066 toc67 t c = +25 c t c = +85 c t c = -40 c v cc = 3.3v f rf = 200mhz p out = 3dbm oip2 vs. rf frequency rf frequency (mhz) oip2 (dbm) 1050 650 250 70 30 60 50 40 50 450 850 max2068 toc68 t c = +25 c t c = +85 c t c = -40 c v cc = 3.3v p out = 0dbm/tone oip2 vs. rf frequency rf frequency (mhz) oip2 (dbm) 1050 650 250 70 30 60 50 40 50 450 850 MAX2066 toc69 v cc = 3.3v p out = 0dbm/tone v cc = 3.6v v cc = 3.0v oip2 vs. attenuator state attenuator state (db) oip2 (dbm) 32 24 16 20 28 12 48 70 30 60 50 40 0 MAX2066 toc70 t c = +25 c t c = +85 c v cc = 3.3v f rf = 200mhz p out = 0dbm/tone t c = -40 c typical operating characteristics (continued) ( v cc = v dd = +3.3v, hc mode , digital attenuator set for maximum gain, p in = -20dbm, f rf = 200mhz, and t c = +25?, unless oth- erwise noted.)
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga ______________________________________________________________________________________ 15 pin description pin name description 1, 16, 19, 22, 24?8, 30, 31, 33?6 gnd ground 2, 3, 32, 37?0 gnd ground. see the pin-compatibility considerations section. 4 data spi data digital input 5 clk spi clock digital input 6 cs spi chip-select digital input 7 vdd_logic digital logic supply input. connect to the digital logic power supply, v dd . bypass to gnd with a 10nf capacitor as close as possible to the pin. 8 ser/par digital attenuator spi or parallel control selection logic input. logic 0 = parallel control, logic 1 = serial control. 9 state_a digital attenuator preprogrammed attenuation state logic input state a state b digital attenuator logic = 0 logic = 0 preprogrammed state 1 logic = 1 logic = 0 preprogrammed state 2 logic = 0 logic = 1 preprogrammed state 3 10 state_b logic = 1 logic = 1 preprogrammed state 4 11 d4 16db attenuator logic input. logic 0 = disable, logic 1 = enable. 12 d3 8db attenuator logic input. logic 0 = disable, logic 1 = enable. 13 d2 4db attenuator logic input. logic 0 = disable, logic 1 = enable. 14 d1 2db attenuator logic input. logic 0 = disable, logic 1 = enable. 15 d0 1db attenuator logic input. logic 0 = disable, logic 1 = enable. 17 amp_out driver amplifier output (50 ). see the typical application circuit for details. 18 rset driver amplifier bias setting. see the external bias section. 20 amp_in driver amplifier input (50 ). see the typical application circuit for details. 21 vc c _amp driver amplifier supply voltage input. connect to the v cc power supply. bypass to gnd with 1000pf and 10nf capacitors as close as possible to the pin with the smaller value capacitor closer to the part. 23 atten_out 5-bit digital attenuator output (50 ). internally matched to 50 . requires an external dc blocking capacitor. 29 atten_in 5-bit digital attenuator input (50 ). internally matched to 50 . requires an external dc blocking capacitor. ?p e xp osed p ad . inter nal l y connected to gn d . c onnect e p to gn d for p r op er rf p er for m ance and enhanced ther m al d i ssi p ati on.
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 16 ______________________________________________________________________________________ detailed description the MAX2066 high-linearity digital variable-gain amplifi- er is a general-purpose, high-performance amplifier designed to interface with 50 systems operating in the 50mhz to 1000mhz frequency range. the MAX2066 integrates a digital attenuator to provide 31db of gain control, as well as a driver amplifier opti- mized to provide high gain, high ip3, low noise figure, and low power consumption. for applications that do not require high linearity, the bias current of the amplifi- er can be adjusted by an external resistor to further reduce power consumption. the attenuator is controlled as a slave peripheral using either the spi-compatible interface or a parallel bus with 31db total adjustment range in 1db steps. an added feature allows ?apid-fire?gain selection between each of the four unique steps (prepro- grammed by the user through the spi-compatible inter- face). the 2-pin control allows the user to quickly access any one of four customized attenuation states without reprogramming the spi bus. because each stage has its own external rf input and rf output, this component can be configured to either optimize nf (amplifier configured first), or oip3 (amplifier last). the device? performance features include 22db stand- alone amplifier gain (amplifier only), 5.2db nf at maxi- mum gain (includes attenuator insertion loss), and a high oip3 level of +42.4dbm. each of these features makes the MAX2066 an ideal vga for numerous receiv- er and transmitter applications. in addition, the MAX2066 operates from a single +5v supply, or a single +3.3v supply with slightly reduced performance, and has adjustable bias to trade current consumption for linearity performance. 5-bit digital attenuator control the MAX2066 integrates a 5-bit digital attenuator to achieve a high level of dynamic range. the digital attenuator has a 31db control range, a 1db step size, and is programmed either through a dedicated 5-bit parallel bus or through the 3-wire spi. see the applications information section and table 1 for attenu- ator programming details. the attenuator can be used for both static and dynamic power control. driver amplifier the MAX2066 includes a high-performance driver with a fixed gain of 22db. the driver amplifier circuit is opti- mized for high linearity for the 50mhz to 1000mhz fre- quency range. applications information spi interface and attenuator settings the attenuator can be programmed through the 3-wire spi/microwire-compatible serial interface using 5-bit words. twenty-eight bits of data are shifted in msb first and framed by cs . when cs is low, the clock is active and data is shifted on the rising edge of the clock. when cs transitions high, the data is latched and the attenuator setting changes (figure 1). see table 2 for details on the spi data format. table 1. control logic ser/par attenuator 0 parallel controlled 1 spi controlled microwire is a trademark of national semiconductor corp.
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga ______________________________________________________________________________________ 17 data clock cs t ews t ew t es t cw t cs dn msb lsb d(n - 1) d1 d0 t ch figure 1. spi timing diagram table 2. spi data format function bit description d27 (msb) 16db step (msb of the 5-bit word used to program the digital attenuator state 4) d26 8db step d25 4db step d24 2db step digital attenuator state 4 d23 1db step (lsb) d22 d21 d20 d19 digital attenuator state 3 d18 5-bit word used to program the digital attenuator state 3 (see the description for digital attenuator state 4) d17 d16 d15 d14 digital attenuator state 2 d13 5-bit word used to program the digital attenuator state 2 (see the description for digital attenuator state 4) d12 d11 d10 d9 digital attenuator state 1 d8 5-bit word used to program the digital attenuator state 1 (see the description for digital attenuator state 4)
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 18 ______________________________________________________________________________________ table 2. spi data format (continued) function bit description d7 d6 d5 d4 d3 d2 d1 reserved d0 (lsb) bits d[7:0] are reserved. set to logic 0. digital attenuator settings using the parallel control bus to capitalize on its fast 25ns switching capability, the MAX2066 offers a supplemental 5-bit parallel control interface. the digital logic attenuator-control pins (d0?4) enable the attenuator stages (table 3). direct access to this 5-bit bus enables the user to avoid any programming delays associated with the spi interface. one of the limitations of any spi bus is the speed at which commands can be clocked into each peripheral device. by offering direct access to the 5-bit parallel interface, the user can quickly shift between digital attenuator states as needed for critical ?ast- attack?automatic gain-control (agc) applications. ?apid-fire?preprogrammed attenuation states the MAX2066 has an added feature that provides ?apid-fire?gain selection between four prepro- grammed attenuation steps. as with the supplemental 5-bit bus mentioned above, this ?apid-fire?gain selec- tion allows the user to quickly access any one of four customized digital attenuation states without incurring the delays associated with reprogramming the device through the spi bus. the switching speed is comparable to that achieved using the supplemental 5-bit parallel bus. however, by employing this specific feature, the digital attenuator i/o is further reduced by a factor of either 5 or 2.5 (5 control bits vs. 1 or 2, respectively) depending on the number of states desired. the user can employ the state_a and state_b logic- input pins to apply each step as required (table 4). toggling just the state_a pin (one control bit) yields two preprogrammed attenuation states; toggling both the state_a and state_b pins together (two control bits) yields four preprogrammed attenuation states. table 3. digital attenuator settings (parallel control) input logic = 0 (or ground) logic = 1 d0 disable 1db attenuator, or when spi is default programmer enable 1db attenuator d1 disable 2db attenuator, or when spi is default programmer enable 2db attenuator d2 disable 4db attenuator, or when spi is default programmer enable 4db attenuator d3 disable 8db attenuator, or when spi is default programmer enable 8db attenuator d4 disable 16db attenuator, or when spi is default programmer enable 16db attenuator
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga ______________________________________________________________________________________ 19 as an example, assume that the agc application requires a static attenuation adjustment to trim out gain inconsistencies within a receiver lineup. the same agc circuit can also be called upon to dynamically attenuate an unwanted blocker signal that could de-sense the receiver and lead to an adc overdrive condition. in this example, the MAX2066 would be preprogrammed (through the spi bus) with two customized attenuation states?ne to address the static gain trim adjustment, the second to counter the unwanted blocker condition. toggling just the state_a control bit enables the user to switch quickly between the static and dynamic atten- uation settings with only one i/o pin. if desired, the user can also program two additional attenuation states by using the state_b control bit as a second i/o pin. these two additional attenuation set- tings are useful for software-defined radio applications where multiple static gain settings may be needed to account for different frequencies of operation, or where multiple dynamic attenuation settings are needed to account for different blocker levels (as defined by multi- ple wireless standards). external bias bias currents for the driver amplifier are set and opti- mized through external resistors. resistors r1 and r1a connected to rset (pin 18) set the bias current for the amplifier. the external biasing resistor values can be increased for reduced current operation at the expense of performance. see tables 6 and 7 for details. +5v and +3.3v supply voltage the MAX2066 features an optional +3.3v supply voltage operation with slightly reduced linearity performance. pin-compatibility considerations the MAX2066 is a simplified version of the max2065 analog/digital vga. the MAX2066 does not contain an analog attenuator, on-chip dac, or internal reference. the associated input/output pins are internally connected to ground (table 5). ground the unused input/output pins to optimize isolation. (see the typical application circuit .) layout considerations the pin configuration of the MAX2066 has been opti- mized to facilitate a very compact physical layout of the device and its associated discrete components. the exposed paddle (ep) of the MAX2066? 40-pin thin qfn-ep package provides a low thermal-resistance path to the die. it is important that the pcb on which the MAX2066 is mounted be designed to conduct 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 pcb, either directly or through an array of plated via holes. table 4. preprogrammed attenuation state settings state_a state_b digital attenuator 0 0 preprogrammed attenuation state 1 1 0 preprogrammed attenuation state 2 0 1 preprogrammed attenuation state 3 1 1 preprogrammed attenuation state 4 table 5. max2065/MAX2066 pin comparison pin max2065 MAX2066 2 vref_select gnd 3 vdac_en gnd 32 atten1_out gnd 37 atten1_in gnd 38 vcc_analog gnd 39 analog_vctrl gnd 40 vref_in gnd
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 20 ______________________________________________________________________________________ 26 25 24 23 22 c8 21 gnd gnd c l c6 c7 gnd atten_out gnd vcc_amp v cc figure 2. bandpass filter to reduce amplitude overshoot table 7. typical application circuit component values (lc mode) designation value size vendor description c1, c2, c7 10nf 0402 murata mfg. co., ltd. x7r c3, c4, c6, c8, c9 1000pf 0402 murata mfg. co., ltd. c0g ceramic capacitors l1 470nh 1008 coilcraft, inc. 1008cs-471xjlc r1 24 0402 vishay 1% r1a 0.01? 0402 murata mfg. co., ltd. x7r r2 (+3.3v applications only) 1k 0402 panasonic corp. 1% r3 (+3.3v applications only) 2k 0402 panasonic corp. 1% u1 40-pin thin qfn-ep (6mm x 6mm) maxim integrated products, inc. MAX2066etl+ table 6. typical application circuit component values (hc mode) designation value size vendor description c1, c2, c7 10nf 0402 murata mfg. co., ltd. x7r c3, c4, c6, c8, c9 1000pf 0402 murata mfg. co., ltd. c0g ceramic capacitors l1 470nh 1008 coilcraft, inc. 1008cs-471xjlc r1, r1a 10 0402 vishay 1% r2 (+3.3v applications only) 1k 0402 panasonic corp. 1% r3 (+3.3v applications only) 2k 0402 panasonic corp. 1% u1 40-pin thin qfn-ep (6mm x 6mm) maxim integrated products, inc. MAX2066etl+ amplitude overshoot reduction to reduce amplitude overshoot during digital attenua- tor state change, connect a bandpass filter (parallel lc type) from atten_out (pin 23) to ground. l = 18nh and c = 47pf are recommended for 169mhz operation (figure 2). contact the factory for recom- mended components for other operating frequencies.
MAX2066 38 d2 13 d0 15 36 gnd d1 14 37 gnd gnd 16 35 amp_out gnd 17 34 gnd 33 rset 18 32 gnd 19 amp_in gnd 20 31 d3 12 39 d4 11 40 23 8 ser/par atten_out 6 cs gnd 25 24 7 vdd_logic gnd 5 clk gnd 26 4 data gnd 27 3 gnd 28 2 atten_in 29 22 9 state_a gnd 21 10 state_b vcc_amp *in lc mode, r1a is a 0.01 f capacitor. see table 7 for details. 130 gnd gnd + ep driver amp spi interface digital attenuator gnd gnd gnd gnd gnd gnd gnd c1 c4 rf output l1 c3 v dd c2 v cc c7 c6 v cc r1 r1a* r2 r3 c9 c8 rf input MAX2066 typical application circuit 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga ______________________________________________________________________________________ 21
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 22 ______________________________________________________________________________________ gnd 38 d2 13 d0 15 36 gnd d1 gnd 14 37 gnd gnd 16 35 tqfn exposed pad on bottom. connect ep to gnd. gnd 17 34 gnd 33 rset amp_out 18 gnd 32 gnd 19 amp_in gnd 20 31 d3 gnd 12 39 d4 gnd 11 40 23 8 ser/par atten_out 6 cs gnd 25 24 7 vdd_logic gnd 5 clk gnd 26 4 data gnd 27 3 gnd gnd 28 2 atten_in gnd 29 22 9 state_a gnd 21 10 state_b vcc_amp 1 top view 30 gnd gnd + driver amp spi interface digital attenuator MAX2066 pin configuration/functional block diagram chip information process: sige bicmos
MAX2066 50mhz to 1000mhz high-linearity, serial/parallel-controlled digital vga 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 ____________________ 23 2008 maxim integrated products is a registered trademark of maxim integrated products, inc. package information for the latest package outline information, go to www.maxim-ic.com/packages . package type package code document no. 40 thin qfn-ep t4066-3 21-0141

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