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general description the MAX4747?ax4750 low-voltage, quad single-pole single-throw (spst)/dual single-pole/double-throw (spdt) analog switches operate from a single +2v to +11v supply and handle rail-to-rail analog signals. these switches exhibit low leakage current (0.1na) and consume less than 0.5nw (typ) of quiescent power, making them ideal for battery-powered applications. when powered from a +3v supply, these switches fea- ture 50 ? (max) on-resistance (r on ), with 3.5 ? (max) matching between channels and 9 ? (max) flatness over the specified signal range. the MAX4747 has four normally open (no) switches, the max4748 has four normally closed (nc) switches, and the max4749 has two no and two nc switches. the max4750 has two spdt switches. these switches are available in 14-pin tssop, 16-pin tqfn (4mm x 4mm), and 16-bump wlp packages. this tiny chip-scale pack- age occupies a 2mm 2mm area and significantly reduces the required pc board area. applications battery-powered systems audio/video-signal routing low-voltage data-acquisition systems cell phones communications circuits glucose meters pdas features 2mm 2mm wlp guaranteed on-resistance (r on ) 25? (max) at +5v 50? (max) at +3v on-resistance matching 3? (max) at +5v 3.5? (max) at +3v guaranteed < 0.1na leakage current at t a = +25c single-supply operation from +2.0v to +11v ttl/cmos-logic compatible -84db crosstalk (1mhz) -72db off-isolation (1mhz) low power consumption: 0.5nw (typ) rail-to-rail signal handling MAX4747?ax4750 50 ? , low-voltage, quad spst/dual spdt analog switches in wlp ________________________________________________________________ maxim integrated products 1 ordering information 19-2646; rev 3; 1/12 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. part temp range pin-/bump- package MAX4747 eud+ -40? to +85? 14 tssop MAX4747ete+ -40? to +85? 16 thin qfn-ep* MAX4747ewe+t -40? to +85? 16 wlp top view top view input switch state low high off on 14 13 12 11 10 9 8 1 2 3 4 5 6 7 MAX4747 MAX4747 tssop v+ in1 in4 no4 com4 com3 no3 com2 no2 com1 no1 gnd in3 in2 (bumps side down) wlp 1 a b c d 234 no2 com2 in2 com1 no1 v+ in3 in1 gnd no3 in4 no4 com4 com3 16 + + 15 14 13 no1 v+ n.c. in1 9 10 11 12 com3 com4 no4 in4 4 3 2 1 in2 com2 no2 com1 *connect ep to v+ 5678 in3 gnd no3 n.c. MAX4747ete tqfn *ep pin/bump configurations/truth tables pin configurations/truth tables continued at end of data sheet. ordering information continued at end of data sheet. * ep = exposed pad. + denotes a lead(pb)-free/rohs-compliant package. t = tape and reel.
MAX4747?ax4750 50 ? , low-voltage, quad spst/dual spdt analog switches in wlp 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristicssingle +3v supply (v+ = +3v ?0%, v ih = +2.0v, v il = +0.8v, t a = t min to t max , unless otherwise noted. typical values are at v+ = +3v, t a = +25?.) (notes 3, 4) 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. (all voltages referenced to gnd.) v+ ...........................................................................-0.3v to +12v in_, com_, no_, nc_ (note 1)....................-0.3v to (v+ + 0.3v) continuous current (any pin) ...........................................?0ma peak current (any pin, pulsed at 1ms, 10% duty cycle) ... 20ma continuous power dissipation (t a = +70?) 14-pin tssop (derate 9.1mw/? above +70?) .........727mw 16-pin thin qfn (derate 16.9mw/? above +70?) .....1349mw 16-bump wlp (derate 7.3mw/? above +70?).........589mw operating temperature range ...........................-40? to +85? storage temperature range .............................-65? to +150? maximum junction temperature .....................................+150? bump temperature (soldering) infrared (15s) ...............................................................+220? vapor phase (60s) .......................................................+215? lead temperature (soldering, 10s) .................................+300? soldering temperature (reflow) .......................................+260? note 1: signals on in_, no_, nc_, or com_ exceeding v+ or gnd are clamped by internal diodes. limit forward-diode current to maximum current rating. parameter symbol conditions t a min typ max units analog switch analog signal range v com_ , v no_ , v nc_ 0v+v +25? 17 50 on-resistance r on v+ = +2.7v, i com_ = 5ma, v no_ or v nc_ = +1.5v t min to t max 60 ? +25? 0.2 3.5 on-resistance matching between channels (notes 5, 6) ? r on v+ = +2.7v, i com_ = 5ma, v no_ or v nc_ = +1.5v t min to t max 4.5 ? +25? 2.7 9 on-resistance flatness (note 7) r flat ( on ) v+ = +2.7v, i com_ = 5ma, v no_ or v nc_ = +1v, +1.5v, +2v t min to t max 11 ? +25? -0.1 +0.1 no_ or nc_ off-leakage current (note 8) i no_ ( off ), i nc_ ( off ) v+ = +3.6v, v com_ = +0.3v, +3v, v no_ or v nc_ = +3v, +0.3v t min to t max -2 +2 na +25? -0.1 +0.1 com_ off-leakage current (note 8) i com_ ( off ) v+ = +3.6v, v com_ = +0.3v, +3v, v no_ or v nc_ = +3v, +0.3v t min to t max -2 +2 na +25? -0.2 +0.2 com_ on-leakage current (note 8) i com_ ( on ) v+ = +3.6v, v com_ = +0.3v, +3.0v, v no_ or v nc_ = +0.3v, +3v, or unconnected t min to t max -4 +4 na MAX4747?ax4750 50 ? , low-voltage, quad spst/dual spdt analog switches in wlp _______________________________________________________________________________________ 3 electrical characteristicssingle +3v supply (continued) (v+ = +3v ?0%, v ih = +2.0v, v il = +0.8v, t a = t min to t max , unless otherwise noted. typical values are at v+ = +3v, t a = +25?.) (notes 3, 4) parameter symbol conditions t a min typ max units dynamic +25? 57 150 turn-on time t on v no_ or v nc_ = +1.5v, r l = 300 ? , c l = 35pf, figure 2 t min to t max 170 ns +25? 24 60 turn-off time t off v no_ or v nc_ = +1.5v, r l = 300 ? , c l = 35pf, figure 2 t min to t max 70 ns +25? 33 break-before-make (max4749/max4750 only) (note 8) t bbm v no_ or v nc_ = +1.5v, r l = 300 ? , c l = 35pf, figure 3 t min to t max 1 ns charge injection q v ge n = 0v , r ge n = 0 ? , c l = 1.0nf, figure 4 +25? 7 pc on-channel -3db bandwidth bw signal = 0dbm, 50 ? in and out +25? 250 mhz off-isolation (note 9) v iso f = 1mhz, v no_ = 1v rms , r l = 50 ? , c l = 5pf, figure 5 +25? -72 db crosstalk (note 10) v ct f = 1mhz, v no_ = 1v rms , r l = 50 ? , c l = 5pf, figure 6 +25? 84 db no_ or nc_ off-capacitance c off f = 1mhz, figure 7 +25? 20 pf com_ off-capacitance c com_ ( off ) f = 1mhz, figure 7 +25? 20 pf com_ on-capacitance c com_ ( on ) f = 1mhz, figure 7 +25? 40 pf logic input input logic high v ih 1.4 v input logic low v il 0.8 v input leakage current i in v in_ = 0v or v+ -1 +0.005 +1 ? power supply power-supply range v+ 2 11 v positive supply current i+ v+ = +5.5v, v in_ = 0v or v+, all switches on or off 0.0001 1 a MAX4747?ax4750 50 ? , low-voltage, quad spst/dual spdt analog switches in wlp 4 _______________________________________________________________________________________ electrical characteristicssingle +5v supply (v+ = +5v ?0%, v ih = +2.0v, v il = +0.8v, t a = t min to t max , unless otherwise noted. typical values are at v+ = +5v, t a = +25?.) (notes 3, 4) parameter symbol conditions t a min typ max units analog switch analog signal range v com_ , v no_ , v nc_ 0v+v +25? 8.2 25 on-resistance r on v+ = +4.5v, i com_ = 5ma, v no_ or v nc_ = +3.0v t min to t max 30 ? +25? 0.1 3 on-resistance matching between channels (notes 5, 6) ? r on v+ = +4.5v, i com_ = 5ma, v no_ or v nc_ = +3.0v t min to t max 4 ? +25? 2.2 5 on-resistance flatness (notes 7) r flat ( on ) v+ = +4.5v, i com_ = 5ma, v no_ or v nc_ = +1v, +2v, +3v t min to t max 7 ? +25? -0.1 +0.1 no_ or nc_ off-leakage current (note 8) i no_ ( off ), i nc_ ( off ) v+ = +5.5v, v com_ = +1v, +4.5v, v no_ or v nc_ = +4.5v, +1v t min to t max -2 +2 na +25? -0.1 +0.1 com_ off-leakage current (note 8) i com_ ( off ) v+ = +5.5v, v com_ = +1v, +4.5v, v no_ or v nc_ = +4.5v, +1v t min to t max -2 +2 na +25? -0.2 +0.2 com_ on-leakage current (note 8) i com_ ( on ) v+ = +5.5v, v com_ = +1v, +4.5v, v no_ or v nc_ = +1v, +4.5v, or unconnected t min to t max -4 +4 na dynamic +25? 36 85 turn-on time t on v no_ or v nc_ = +3.0v, r l = 300 ? , c l = 35pf, figure 2 t min to t max 95 ns +25? 19 45 turn-off time t off v no_ or v nc_ = +3.0v, r l = 300 ? , c l = 35pf, figure 2 t min to t max 55 ns +25? 14 break-before-make (max4749/max4750 only) (note 8) t bbm v no_ or v nc_ = +3.0v, r l = 300 ? , c l = 35pf, figure 3 t min to t max 1 ns charge injection q v gen = 0v, r gen = 0 ? , c l = 1.0nf, figure 4 +25? 9 pc on-channel -3db bandwidth bw signal = 0dbm, 50 ? in and out +25? 250 mhz off-isolation (note 9) v iso f = 1mhz, v no_ = 1v rms , r l = 50 ? , c l = 5pf, figure 5 +25? -72 db MAX4747?ax4750 50 ? , low-voltage, quad spst/dual spdt analog switches in wlp _______________________________________________________________________________________ 5 note 3: 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 4: wlp parts are 100% tested at +25? only, and are guaranteed by design over temperature. tssop and thin qfn parts are 100% tested at +85? and guaranteed by design over temperature. note 5: ? r on = r on(max) - r on(min) . note 6: wlp and thin qfn on-resistance matching between channels is guaranteed by design. note 7: flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal range. note 8: guaranteed by design. note 9: off-isolation = 20 log 10 (v no_ /v com_ ), v no_ = output, v com_ = input to off switch. note 10: between any two switches. electrical characteristicssingle +5v supply (continued) (v+ = +5v ?0%, v ih = +2.0v, v il = +0.8v, t a = t min to t max , unless otherwise noted. typical values are at v+ = +5v, t a = +25?.) (notes 3, 4) parameter symbol conditions t a min typ max units crosstalk (note 10) v ct f = 1mhz, v no_ = 1v rms , r l = 50 ? , c l = 5pf, figure 6 +25? -84 db no_ or nc_ off-capacitance c off f = 1mhz, figure 7 +25? 20 pf com_ off-capacitance c com_ ( off ) f = 1mhz, figure 7 +25? 20 pf com_ on-capacitance c com_ ( on ) f = 1mhz, figure 7 +25? 40 pf logic input input logic high v ih 2v input logic low v il 0.8 v input leakage current i in v in_ = 0v or v+ -1 +0.005 +1 ? power supply power-supply range v+ 2 11 v positive supply current i+ v+ = +5.5v, v in_ = 0v or v+, all switches on or off 0.0001 1 a typical operating characteristics (t a = +25?, unless otherwise noted.) on-resistance vs. v com MAX4747?0-toc01 v com (v) r on ( ? ) 10 8 6 4 2 10 20 30 40 50 0 012 v+ = 2v v+ = 3v v+ = 5v v+ = 11v on-resistance vs. v com MAX4747?0-toc02 v com (v) r on ( ? ) 4 3 2 1 4 8 12 16 0 05 v+ = 5v t a = +25 c t a = -40 c t a = +85 c on-resistance vs. v com MAX4747?0-toc03 v com (v) r on ( ? ) 2.5 2.0 1.5 1.0 0.5 5 10 15 20 25 30 0 03.0 t a = +85 c t a = +25 c t a = -40 c v+ = 3v MAX4747?ax4750 50 ? , low-voltage, quad spst/dual spdt analog switches in wlp 6 _______________________________________________________________________________________ on-resistance vs. v com MAX4747?0-toc04 v com (v) r on ( ? ) 2.0 1.5 1.0 0.5 5 10 15 20 25 30 0 02.5 t a = +85 c t a = +25 c t a = -40 c v+ = 2.5v supply current vs. temperature MAX4747?0-toc05 temperature ( c) supply current (pa) 60 35 10 -15 1 10 100 1000 10,000 0.1 -40 85 v+ = 3v, 5v 100 0.01 -40 -15 35 60 85 leakage vs. temperature 0.1 1 10 MAX4747?0-toc06 temperature ( c) leakage current (pa) 10 v+ = 5v, v com = 4.5v, no_ or nc_ = unconnected on off in logic threshold vs. supply voltage MAX4747?0-toc07 supply voltage (v) logic threshold (v) 10 8 2 4 6 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 012 v no_ = v+ 0 0.01 0.1 1 10 100 1000 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 frequency response MAX4747?0-toc08 frequency (mhz) gain (db)/phase (degrees) loss phase crosstalk off- isolation typical operating characteristics (continued) (t a = +25?, unless otherwise noted.) charge injection vs. v com MAX4747?0-toc09 v com (v) charge (pc) 10 8 6 4 2 10 20 30 40 50 60 0 012 v+ = 11v v+ = 5v v+ = 3v turn-on/off time vs. temperature MAX4747?0-toc10 temperature ( c) turn-on/off time (ns) 60 35 -15 10 10 20 30 40 50 60 70 80 0 -40 85 t on , v+ = 3v t on , v+ = 5v t off , v+ = 3v t off , v+ = 5v turn-on/off time vs. supply voltage MAX4747?0-toc11 supply voltage (v) turn-on/off time (ns) 10 8 6 4 2 20 40 60 80 100 120 0 012 t on t off v no = v+/2 total harmonic distortion vs. frequency MAX4747-50 toc12 frequency (khz) thd (%) 10 1 0.1 0.01 0.1 1 0.001 0.01 100 source and load = 600 ? v com = 2v p-p v+ = 5v v+ = 3v MAX4747?ax4750 50 ? , low-voltage, quad spst/dual spdt analog switches in wlp _______________________________________________________________________________________ 7 bump description?lp pin MAX4747 max4748 max4749 max4750 name function b1, a2, c4, d2 no1?o4 analog-switch normally open terminals b1, a2, c4, d2 nc1?c4 analog-switch normally closed terminals b1, c4 no1, no3 analog-switch normally open terminals b1, c4 no1, no2 analog-switch normally open terminals a3, d2 nc1, nc2 analog-switch normally closed terminals a2, d2 nc2, nc4 analog-switch normally closed terminals a1, a3, d4, d3 a1, a3, d4, d3 a1, a3, d4, d3 com1?om4 analog-switch common terminal a1, d4 com1, com2 analog-switch common terminal c1, a4, b4, d1 c1, a4, b4, d1 c1, a4, b4, d1 in1?n4 logic-control digital input c1, b4 in1, in2 logic-control digital input c3 c3 c3 c3 gnd ground. connect to digital ground. b2 b2 b2 b2 v+ positive analog and digital supply voltage input. internally connected to substrate. a2, a4, d1, d3 n.c. no connection. not internally connected. pin description?ssop pin MAX4747 max4748 max4749 max4750 name function 1, 3, 8, 11 no1?o4 analog-switch normally open terminals 1, 3, 8, 11 nc1?c4 analog-switch normally closed terminals 1, 8 no1, no3 analog-switch normally open terminals 1, 8 no1, no2 analog-switch normally open terminals 4, 11 nc1, nc2 analog-switch normally closed terminals 3, 11 nc2, nc4 analog-switch normally closed terminals 2, 4, 9, 10 2, 4, 9, 10 2, 4, 9, 10 com1?om4 analog-switch common terminal 2, 9 com1, com2 analog-switch common terminal 13, 5, 6, 12 13, 5, 6, 12 13, 5, 6, 12 in1?n4 logic-control digital input 13, 6 in1, in2 logic-control digital input 7 7 7 7 gnd ground. connect to digital ground. 14 14 14 14 v+ positive analog and digital supply voltage input. internally connected to substrate. 3, 5, 10, 12 n.c. no connection. not internally connected. MAX4747?ax4750 50 ? , low-voltage, quad spst/dual spdt analog switches in wlp 8 _______________________________________________________________________________________ pin description?qfn-ep pin MAX4747 max4748 max4749 max4750 name function 1, 3 1, 3 1, 3 1, 9 com1, com2 analog-switch common terminals 2 7 no2 analog-switch normally open terminal 4, 13 4, 13 4, 13 5, 13 in2, in1 logic-control digital inputs 5, 12 5, 12 5, 12 in3, in4 logic-control digital inputs 6 6 6 6 gnd ground. connect to digital ground. 7 7 no3 analog-switch normally open terminal 8, 14 8, 14 8, 14 2, 4, 8, 10, 12, 14 n.c. no connection. not internally connected. 9, 10 9, 10 9, 10 com3, com4 analog-switch common terminals 11 no4 analog-switch normally open terminal 15 15 15 15 v+ positive supply-voltage input 16 16 16 no1 analog-switch normally open terminal 2 2 11 nc2 analog-switch normally closed terminal 7 nc3 analog-switch normally closed terminal 11 11 nc4 analog-switch normally closed terminal 16 3 nc1 analog-switch normally closed terminal ep exposed pad. connect ep to v+. MAX4747?ax4750 applications information operating considerations for high-voltage supply the MAX4747?ax4750 operate to +11v with some precautions. the absolute maximum rating for v+ is +12v (referenced to gnd). when operating near this region, bypass v+ with a minimum 0.1? capacitor to ground as close to the ic as possible. logic levels the MAX4747?ax4750 are ttl compatible when powered from a single +3v supply. when powered from other supply voltages, the logic inputs should be driven rail-to-rail. for example, with a +11v supply, in_ should be driven low to 0v and high to 11v. with a +3.3v sup- ply, in_ should be driven low to 0v and high to 3.3v. driving in_ rail-to-rail minimizes power consumption. analog signal levels analog signals that range over the entire supply volt- age (gnd to v+) pass with very little change in r on (see the typical operating characteristics ). the bidi- rectional switches allow no_, nc_, and com_ connec- tions to be used as either inputs or outputs. power-supply sequencing and overvoltage protection caution: do not exceed the absolute maximum ratings. stresses beyond the listed ratings can cause permanent damage to the 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 small-signal diode d1 as shown in figure 1. if the ana- log signal can dip below gnd, add d2. adding protec- tion diodes reduces the analog signal range to a diode drop (about 0.7v) below v+ (for d1), and to a diode drop above ground (for d2). leakage is unaffected by adding the diodes. on-resistance increases slightly at low supply voltages. maximum supply voltage (v+) must not exceed +11v. adding protection diodes causes the logic thresholds to be shifted relative to the power-supply rails. the most significant shift occurs when using low supply voltages (+5v or less). with a +5v supply, ttl compatibility is not guaranteed when protection diodes are added. driving in_ and in_ all the way to the supply rails (i.e., to a diode drop higher than the v+ pin, or to a diode drop lower than the gnd pin) is always acceptable. protection diodes d1 and d2 also protect against some overvoltage situations. using the circuit in figure 1, no damage results if the supply voltage is below the absolute maximum rating (+12v) and if a fault voltage up to the absolute maximum rating (v+ + 0.3v) is applied to an analog signal terminal. wlp applications information for the latest application details on wlp construction, dimensions, tape carrier information, pc board tech- niques, bump-pad layout, and recommended reflow temperature profile, as well as the latest information on reliability testing results, refer to the application note 1891: wafer-level packaging (wlp) and its applications on maxim? web site at www.maxim-ic.com/wlp . MAX4747 |