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general description the max4704 low-voltage, 4-channel analog multiplex- er operates from a single +1.8v to +5.5v supply. the max4704 features break-before-make switching action with a t on = 60ns and t off = 20ns at +3v. when powered from a +2.7v supply, the device has a 60 (max) on-resistance (r on ), with 3 (max) r on matching and 5 max r on flatness. the digital logic inputs are 1.8v-logic compatible from a +2.7v to +3.3v supply. the max4704 is available in both a space-sav- ing 12-pin qfn (3mm x 3mm) package and a 10-pin ?ax package. applications mp3 players battery-operated equipment relay replacement audio and video signal routing low-voltage data-acquisition systems communications circuits pcmcia cards cellular phones modems features ? 3mm x 3mm 12-pin qfn package ? guaranteed on-resistance: 60 (max) (+2.7v supply) 40 (max) (+5v supply) ? guaranteed match between channels: 3 (max) ? guaranteed flatness over signal range: 5 (max) ? guaranteed low leakage currents: 100pa (max) at +25? ? switching time: t on = 60ns, t off = 20ns ? +1.8v to +5.5v single-supply operation ? rail-to-rail signal handling ? -3db bandwidth: >200mhz ? low crosstalk: -90db (1mhz) ? high off-isolation: -85db (1mhz) ? low 3pc charge injection ? thd: 0.02% ? +1.8v cmos-logic compatible max4704 low-voltage, 60 , 4:1 analog multiplexer in qfn ________________________________________________________________ maxim integrated products 1 1 2 3 4 5 10 9 8 7 6 v+ com no0 adda inh no1 no3 no2 max4704 max top view addb gnd x = don? care n.c. = no connect logic max4704 inh 1 0 0 0 0 addb x 0 0 1 1 adda x 0 1 0 1 on switch none com-no0 com-no1 com-no2 com-no3 12 com 11 no0 10 adda 9 addb 8 n.c. 7 gnd 4 no3 5 no1 6 inh 1 v+ 2 n.c. 3 no2 logic qfn pin configurations ordering information 19-2240; rev 1; 10/08 part temp. range pin-package max4704egc -40? to +85? 12 qfn-ep* max4704eub -40? to +85? 10 ?ax 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. * ep = exposed pad
max4704 low-voltage, 60 , 4:1 analog multiplexer in qfn 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics?ingle +3v supply (v+ = +2.7v to +3.3v, v ih = +1.4v, v il = +0.5v, t a = -40? to +85?, unless otherwise noted. typical values are at v+ = +3v and t a = +25?.) (notes 2, 3) 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: signals on inh, add_, no_, and com exceeding v+ or gnd are clamped by internal diodes. limit forward-diode current to maximum current rating. (voltages referenced to gnd) v+ .............................................................................-0.3v to +6v all other pins (note 1)................................ -0.3v to (v+ + 0.3v) continuous current com, no_ ........................................?0ma peak current com, no_ (pulsed at 1ms, 10% duty cycle)..................................?0ma esd per method 3015.7.......................................................>2kv continuous power dissipation (t a = +70?) 10-pin ?ax (derate 4.7mw/? above +70?) ......... 330mw 12-pin qfn (derate 11.9mw/? above +70?) ......... 952mw operating temperature range .......................... -40? to +85? storage temperature range ............................ -65? to +150? lead temperature (soldering, 10s) ................................ +300? parameter symbol conditions t a min typ max units analog switch analog signal range v com , v no_ 0 v+ v +25 c5060 on-resistance r on v+ = +2.7v, i com = 5ma, v no_ = +1.3v t min to t max 70 +25 c13 on-resistance match between channels (note 4) r on v+ = +2.7v, i com = 5ma, v no_ = +1.3v t min to t max 5 +25 c35 on-resistance flatness (note 5) r flat ( on ) v+ = +2.7v, i com = 5ma, v no_ = +1v, +1.3v, +1.8v t min to t max 10 +25 c -0.1 0.01 0.1 no_ off-leakage current (note 6) i n o_ ( off ) v+ = +3.3v, v com = +0.3v, +3v v no_ = +3v, +0.3v t min to t max -1 1 na +25 c -0.5 0.01 0.5 com on-leakage current (note 6) i c om ( on ) v + = + 3.3v , v c om = + 0.3v , +3v v n o_ = + 0.3v , + 3v , or fl oati ng t min to t max -5 5 na +25 c -0.5 0.01 0.5 com off-leakage current (note 6) i c om ( off ) v+ = +3.3v, v com = +0.3v, +3v v no_ = +3v, +0.3v t min to t max -5 5 na dynamic +25 c2060 address transition time t trans v n o_ = +1.5v, r l = 300 , c l = 35pf, figure 2 t min to t max 70 ns +25 c2560 inhibit turn-on time t on v n o _ = +1.5v, r l = 300 , c l = 35pf, figure 3 t min to t max 70 ns +25 c1020 inhibit turn-off time t off v n o _ = +1.5v, r l = 300 , c l = 35pf, figure 3 t min to t max 30 ns +25 c20 break-before-make time (note 7) t bbm v n o _ = +1.5v, r l = 300 , c l = 35pf, figure 4 t min to t max 2 ns charge injection q v gen = 0, r gen = 0, c l = 1.0nf, figure 5 2pc
max4704 low-voltage, 60 , 4:1 analog multiplexer in qfn _______________________________________________________________________________________ 3 electrical characteristics?ingle +5v supply (v+ = +4.5v to +5.5v, v ih = +2.0v, v il = +0.8v, t a = -40? to +85?, unless otherwise noted. typical values are at v+ = +5v and t a = +25?.) (notes 2, 3) parameter symbol conditions t a min typ max units analog switch analog signal range v com , v no_ 0 v+ v +25 c3040 on-resistance r on v+ = +4.5v, i com = 5ma, v no_ = +3.5v t min to t max 50 +25 c12 on-resistance match between channels (note 4) r on v+ = +4.5v, i com = 5ma, v no_ = +3.5v t min to t max 3 +25 c35 on-resistance flatness (note 5) r flat ( on ) v+ = +4.5v, i com = 5ma, v no_ = +1v, +2.25v, +3.5v t min to t max 10 +25 c -0.1 0.01 0.1 no_ off-leakage current (note 6) i n o_ ( off ) v+ = +5.5v, v com = +0.5v, +5v v no_ = +5v, +0.5v t min to t max -1 1 na +25 c -0.5 0.01 0.5 com on-leakage current (note 6) i c om ( on ) v + = + 5.5v , v c om = + 0.5v , +5v v n o_ = + 0.5v , +5v , or fl oati ng t min to t max -5 5 na electrical characteristics?ingle +3v supply (continued) (v+ = +2.7v to +3.3v, v ih = +1.4v, v il = +0.5v, t a = -40? to +85?, unless otherwise noted. typical values are at v+ = +3v and t a = +25?.) (notes 2, 3) parameter symbol conditions t a min typ max units on-channel -3db bandwidth bw signal = 0dbm, 50 in and out, figure 6 >200 mhz off-isolation (note 8) v iso f = 1mhz, r l = 50 , c l = 5pf, figure 6 -85 db crosstalk (note 9) v ct f = 1mhz, r l = 50 , c l = 5pf, figure 6 -90 db no_ off-capacitance c n o_ ( off ) f = 1mhz, v n o _ = gnd, figure 7 7 pf com on-capacitance c com ( on ) f = 1mhz, v n o _ = gnd, figure 7 19 pf com off-capacitance c com ( off ) f = 1mhz, v n o _ = gnd, figure 7 15 pf digital i/o input logic high v ih 1.4 v input logic low v il 0.5 v input leakage current i ih , i il add_, inh = 0 or v+ -1 1a supply power-supply range v+ 1.8 5.5 v power-supply current i+ v+ = +5.5v, add_, inh = 0 or v+ 1 a
max4704 low-voltage, 60 , 4:1 analog multiplexer in qfn 4 _______________________________________________________________________________________ note 2: the algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in this data sheet. note 3: -40? specifications are guaranteed by design. note 4: r on = r on(max) - r on(min) . note 5: flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. note 6: leakage currents are 100% tested at t a = +85?. limits across the full temperature range are guaranteed by correlation. note 7: guaranteed by design. note 8: off-isolation = 20log 10 (v com / v no_ ), v com = output, v no_ = input to off switch. note 9: between any two switches. electrical characteristics?ingle +5v supply (continued) (v+ = +4.5v to +5.5v, v ih = +2.0v, v il = +0.8v, t a = -40? to +85?, unless otherwise noted. typical values are at v+ = +5v and t a = +25?.) (notes 2, 3) parameter symbol conditions t a min typ max units +25 c -0.5 0.01 0.5 com off-leakage current i c om ( off ) v+ = +5.5v, v com_ = +0.5v, +5v v no_ = +5v, +0.5v t min to t max -5 5 na dynamic +25 c1535 address transition time t trans v n o_ = +3v, r l = 300 , c l = 35pf, figure 2 t min to t max 40 ns +25 c1835 inhibit turn-on time t on v n o_ = +3v, r l = 300 , c l = 35pf, figure 3 t min to t max 40 ns +25 c920 inhibit turn-off time t off v n o_ = +3v, r l = 300 , c l = 35pf, figure 3 t min to t max 30 ns +25 c20 break-before-make time (note 7) t bbm v n o_ = +3v, r l = 300 , c l = 35pf, figure 4 t min to t max 2 ns charge injection q v gen = 0, r gen = 0, c l = 1.0nf, figure 5 3pc on-channel -3db bandwidth bw signal = 0dbm, 50 in and out, figure 6 >200 mhz off-isolation (note 8) v iso f = 1mhz, r l = 50 , c l = 5pf, figure 6 -85 db crosstalk (note 9) v ct f = 1mhz, r l = 50 , c l = 5pf, figure 6 -90 db total harmonic distortion thd f = 20hz to 20khz, 1vp-p, r l = 600 0.02 % digital i/o input logic high v ih 2.0 v input logic low v il 0.8 v input leakage current i ih , i il add_, inh = 0 or v+ -1 1a supply power-supply range v+ 1.8 5.5 v positive supply current i+ v+ = +5.5v, add_, inh = 0 or v+ 1 a
max4704 low-voltage, 60 , 4:1 analog multiplexer in qfn _______________________________________________________________________________________ 5 0 20 10 50 40 30 80 70 60 90 02 1 345 on-resistance vs. v com max4704 toc01 v com (v) r on ( ) v+ = 2.5v v+ = 1.8v v+ = 5.0v v+ = 3.0v 0 5 10 15 20 25 30 35 40 01.0 0.5 1.5 2.0 2.5 3.0 on-resistance vs. v com (v+ = 3v) max4704 toc02 v com (v) r on ( ) t a = +25 c t a = +85 c t a = -40 c 0 5 15 10 20 25 02 1345 on-resistance vs. v com (v+ = 5v) max4704 toc03 v com (v) r on ( ) t a = +25 c t a = +85 c t a = -40 c typical operating characteristics (t a = +25?, unless otherwise noted.) 0 3 9 6 12 15 -40 10 -15 35 60 85 supply current vs. temperature max4704 toc04 temperature ( c) supply current (na) v+ = +5v v inh = 0 v+ = +3v 1000 100 10 1 0.1 02 1 345 supply current vs. logic input voltage max4704 toc05 adda (v) supply current ( a) v+ = +5v v addb = 0 v+ = +3v com on-leakage current vs. temperature max4704 toc06 temperature ( c) com on-leakage (pa) 60 35 10 -15 10 100 1000 1 -40 85 v+ = 5v v+ = 3v com off-leakage current vs. temperature max4704 toc07 temperature ( c) com off-leakage (pa) 60 35 10 -15 10 100 1000 1 -40 85 com off, v+ = 5v com off, v+ = 3v no_ off, v+ = 5v no_ off, v+ = 3v 0 0.50 0.25 1.00 0.75 1.25 1.50 05 logic threshold vs. supply voltage max4704 toc08 v+ (v) logic threshold add_ (v) 2 134 v ih v il inhibit turn-on/off time vs. supply voltage max4704 toc09 supply voltage (v) inhibit time (ns) 4 3 2 10 15 20 25 30 35 5 15 t on t off
max4704 low-voltage, 60 , 4:1 analog multiplexer in qfn 6 _______________________________________________________________________________________ inhibit turn-on/off time vs. temperature max4704 toc10 temperature ( c) inhibit time (ns) 60 35 10 -15 5 10 15 20 25 0 -40 85 t on , v+ = 3v t on , v+ = 5v t off , v+ = 3v t off , v+ = 5v charge injection vs. v com max4704 toc11 v com (v) q (pc) 4 3 2 1 1 2 3 4 5 6 7 8 9 10 0 05 v+ = 5v v+ = 3v frequency response max4704 toc12 frequency (mhz) loss (db) 100 10 1 0.1 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 -120 0.01 1000 on-response off-isolation crosstalk typical operating characteristics (continued) (t a = +25?, unless otherwise noted.) address transition time vs. supply voltage max4704 toc14 supply voltage (v) address transition time (ns) 4 3 2 5 10 15 20 25 30 0 15 t lh t hl thd vs. frequency max4704 toc13 frequency (hz) thd (%) 10k 1k 100 0.02 0.03 0.04 0.01 10 100k v+ = 5v vp-p = 1v r in = r out = 600 address transition time vs. temperature max4704 toc15 temperature ( c) address transition time (ns) 60 35 10 -15 5 10 15 20 25 0 -40 85 t lh , v+ = 3v t lh , v+ = 5v t hl , v+ = 3v t hl , v+ = 5v
max4704 low-voltage, 60 , 4:1 analog multiplexer in qfn _______________________________________________________________________________________ 7 detailed description the max4704 low-voltage, 4-channel analog multiplexer operates from a single +1.8v to +5.5v supply. when powered from a +2.7v supply, the device has a 60 (max) on-resistance (r on ), with 3 (max) r on matching and 5 (max) r on flatness. the digital logic inputs are +1.8v-logic compatible from a +2.7v to +3.3v supply. applications information digital control inputs the max4704 logic inputs are +1.8v cmos logic compati- ble for 3v operation and ttl compatible for 5v operation of v+. driving add_ rail-to-rail minimizes power consumption. analog signal levels analog signals that range over the entire supply volt- age (v+ to gnd) are passed with very little change in on-resistance (see typical operating characteristics ). the switches are bidirectional, so the no_ and com pins can be either inputs or outputs. power-supply sequencing and overvoltage protection caution: do not exceed the absolute maximum rat- ings because stresses beyond those listed may cause permanent damage to devices. proper power-supply sequencing is recommended for all cmos devices. always apply v+ before applying analog signals, especially if the analog signal is not current limited. if this sequencing is not possible, and if the analog inputs are not current limited to <20ma, add a small-signal diode (d1) as shown in figure 1. if the analog signal can dip below gnd, add d2. adding protection diodes reduces the analog range to a diode drop (about 0.7v) below v+ (for d1), and a diode drop above ground (for d2). on-resistance increases slightly at low supply voltages. maximum supply voltage (v+) must not exceed +6v. adding protection diode d2 causes the logic threshold to be shifted relative to gnd. ttl compatibility is not guaranteed when d2 is added. protection diodes d1 and d2 also protect against some overvoltage situations. in the circuit in figure 1, if the supply voltage is below the absolute maximum rating, and if a fault voltage up to the absolute maximum rating is applied to an analog signal pin, no damage will result. positive supply com no d2 d1 gnd v g v+ max4704 figure 1. overvoltage protection using two external blocking diodes pin description pin ?ax qfn-ep name function 10 1 v+ positive supply voltage 2, 8 n.c. no connection. not internally connected. 1 3 no2 analog switch 2. normally open. 2 4 no3 analog switch 3. normally open. 3 5 no1 analog switch 1. normally open. 46inh inhibit. connect to gnd for normal operation. connect to logic-level high to turn all switches off. 5 7 gnd ground 6 9 addb address decoder selection b 7 10 adda address decoder selection a 8 11 no0 analog switch 0. normally open. 9 12 com analog switch common terminal ep exposed pad. internally connected to gnd. connect to a large ground plane to maximize thermal performance; not intended as an electrical connection point (qfn package only).
max4704 low-voltage, 60 , 4:1 analog multiplexer in qfn 8 _______________________________________________________________________________________ test circuits/timing diagrams 50% v+ 0 v com v out v add 0 90% t bbm v+ v out v add gnd v+ addb adda inh no0?03 com v no_ max4704 300 35pf t r < 5ns t f < 5ns figure 4. break-before-make interval 50% t on v+ 0 v no0 v out v inh 0 90% 90% t off v inh v+ v out gnd v+ addb adda inh no0 no1?o3 com v no_ max4704 300 35pf figure 3. inhibit switching times 50% t trans v+ 0 v no0 v out v add 0 90% 90% t trans v add v+ v out gnd v+ addb adda inh no0 no1?o2 no3 com v no_ max4704 300 35pf figure 2. address transition time
max4704 low-voltage, 60 , 4:1 analog multiplexer in qfn _______________________________________________________________________________________ 9 test circuits/timing diagrams (continued) 0 v+ v inh v out is the measured voltage due to charge- transfer error q when the channel turns off. v out repeat test for each section. q = v out x c l v out v+ v out v no = 0 v inh gnd v+ addb channel select adda inh no_ com max4704 c l 1000pf figure 5. charge injection measurements are standardized against short at socket terminals. off-isolation is measured between com and "off" no terminal on each switch. on-loss is measured between com and "on" no terminal on each switch. crosstalk is measured from one channel (a, b) to other channel. signal direction through switch is reversed; worst values are recorded. v+ v out v in gnd v+ v in v out meas. network analyzer 50 50 50 off-isolation = 20log on-loss = 20log crosstalk = 20log 50 ref. addb v out v in v out v in adda channel select inh no_ com 10nf max4704 figure 6. off-isolation, on-loss, and crosstalk v+ gnd v+ addb adda channel select 1mhz capacitance analyzer inh no_ no_ com max4704 figure 7. no_/com capacitance chip information transistor count: 256 process: cmos
max4704 low-voltage, 60 , 4:1 analog multiplexer in qfn 10 ______________________________________________________________________________________ package information for the latest package outline information and land patterns, go to www.maxim-ic.com/packages . package type package code document no. 12 qfn-ep g1233-1 21-0102 10 ?ax 21-0061
max4704 low-voltage, 60 , 4:1 analog multiplexer in qfn 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 ____________________ 11 2008 maxim integrated products printed usa is a registered trademark of maxim integrated products. revision history revision number revision date description pages changed 0 10/01 initial release ? 1 10/08 inserted exposed paddle description 1, 7

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