general description the max4647/max4648 are dual-supply single-pole/sin- gle-throw (spst) switches. on-resistance is 25 ? max and flat (2 ? max) over the specified signal range. each switch can handle rail-to-rail analog signals. off-leakage current is only 1na max at +25?. they conduct analog or digital signals equally well in either direction. the primary appli- cation areas are in the switching and routing of signals in telecommunications and test equipment. the max4647/max4648 are single spst analog switches. the max4647 has one normally closed (nc) switch, and the max4648 has one normally open (no) switch. these devices operate from a single +9v to +36v supply or from dual ?.5v to ?0v supplies. the max4647/max4648 are available in tiny 6-pin sot23 packages. ________________________applications pbx, pabx systems communication systems dsl test equipment avionics audio systems redundant systems relay replacement pc multimedia boards ____________________________features ? low on-resistance 25 ? max (15v supplies) ? guaranteed r on flatness over specified signal range (2 ? max) ? v l logic supply not required ? rail-to-rail signal handling ? 15v and single 12v supply operation ? low leakage (1na max) ? fast switching speeds t on = 100ns t off = 100ns max4647/max4648 25 ? spst analog switches in sot23-6 ________________________________________________________________ maxim integrated products 1 v- gnd in 16 com 5 v+ nc max4647 sot23-6 top view 2 34 logic switch 0 1 on off logic switch 0 1 off on v- gnd in 16 com 5 v+ no max4648 sot23-6 2 34 pin configurations/functional diagrams/truth tables 19-1880; rev 1; 1/07 for price, delivery, and to place orders, please contact maxim distribution at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. part temp range pin- package top mark pkg code max4647 eut-t+ -40? to +85? 6 sot23 aarv u 6s n - 1 max4648 eut-t+ -40? to +85? 6 sot23 aarw u 6s n - 1 ordering information + denotes a lead-free package.
max4647/max4648 25 ? spst analog switches in sot23-6 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics?dual 15v supplies (v+ = +15v, v- = -15v, v ih = 2.4v, v il = 0.8v, t a = t min to t max , unless otherwise noted. typical values are at 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. (voltages referenced to gnd) v+ ...........................................................................-0.3v, +44.0v v- ............................................................................-44.0v, +0.3v v+ to v-................................................................-0.3v to +44.0v all other pins (note 1)...............................v- - 0.3v to v+ + 0.3v continuous current into any terminal..............................?0ma peak current into any terminal (pulsed at 1ms, 10% duty cycle)...............................?00ma continuous power dissipation (t a = +70?) 6-pin sot23 (derate 8.7mw/? above +70?)...........696mw operating temperature ranges max464_eut..................................................-40? to +85? storage temperature range .............................-65? to +150? junction temperature ......................................................+150? lead temperature (soldering, 10s) .................................+300? parameter symbol conditions t a min typ max units a nalog switch analog signal range v no ,v nc , v com v- v+ v +25 c1825 on-resistance r on i com = 10ma; v no or v nc = 10v t min to t max 30 ? +25 c 0.8 2 on-resistance flatness (note 4) r flat ( on ) i com = 10ma; v no or v nc = +5v, 0, -5v t min to t max 3 ? +25 c-1 0.01 1 no or nc off-leakage current i no ( off ) or i nc ( off ) v no or v nc = +14v, -14v; v com = -14v, +14v t min to t max -10 10 na +25 c-1 0.01 1 com off-leakage current i com ( off ) v com = -14v, +14v; v no or v nc = +14v, -14v t min to t max -10 10 na +25 c-2 2 com on-leakage current i com ( on ) v com = +14v, -14v; v no or v nc = +14v, -14v or floating t min to t max -20 20 na logic input input logic high v ih t min to t max 2.4 v input logic low v il t min to t max 0.8 v input leakage current i in v in = 0 or +5v t min to t max -1 1 a dynamic characteristics +25 c68 100 turn-on time t on v no or v nc = 10v; r l = 300 ? ; c l = 35pf; figure 2 t min to t max 125 ns +25 c62 100 turn-off time t off v no or v nc = 10v; r l =300 ? ; c l = 35pf; figure 2 t min to t max 125 ns charge injection q com = 0; r s = 0; c l = 1nf; figure 3 +25 c4pc note 1: signals on no, nc, com, or in exceeding v+ or v- are clamped by internal diodes. limit forward-diode current to maximum current rating.
max4647/max4648 25 ? spst analog switches in sot23-6 ________________________________________________________________________________________ 3 max4647/max4648 parameter symbol conditions t a min typ max units off-isolation v iso c l = 5pf; r l = 50 ? ; f = 1mhz; v com = 1v rms ; figure 4 +25 c -92 db total harmonic distortion thd r l = 600 ? , 5vp-p, f = 20hz to 20khz +25 c 0.006 % v no or v nc off-capacitance c no(off) , c nc ( off ) f = 1mhz; figure 5 +25 c6pf com off-capacitance c com ( off ) f = 1mhz; figure 5 +25 c6pf com on-capacitance c com ( on ) f = 1mhz; figure 6 +25 c19pf power supply power supply range t min to t max 4.5 20 v +25 c45 100 v in = 5v t min to t max 150 +25 c 0.001 1 positive supply current i+ v in = 0 or v+ t min to t max 10 a +25 c 0.001 1 negative supply current i- v in = 0 or 5v t min to t max 10 a electrical characteristics?dual 15v supplies (continued) (v+ = +15v, v- = -15v, v ih = 2.4v, v il = 0.8v, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?. (notes 2, 3) electrical characteristics?single +12v supply (v+ = +12v, v- = 0, v ih = 2.4v, v il = 0.8v, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (notes 2, 3) parameter symbol conditions t a min typ max units analog switch analog signal range v no , v nc , v com 0v+v +25 c3645 on-resistance r on i com = 10ma; v no or v nc = +10v t min to t max 60 ? +25 c46 on-resistance flatness (note 4) r flat ( on ) i com = 10ma; v no or v nc = +2v, +6v, +10v t min to t max 8 ? dynamic +25 c 100 175 turn-on time t on v n o or v n c = + 10v ; r l = 300 ? ; c l = 35p f; fi g ur e 2 t min to t max 225 ns +25 c68 150 turn-off time t off v n o or v n c = + 10v ; r l = 300 ? ; c l = 35p f; fi g ur e 2 t min to t max 200 ns charge injection q com = 0; r s = 0; c l = 1nf; figure 3 +25 c-5pc
max4647/max4648 25 ? spst analog switches in sot23-6 4 _______________________________________________________________________________________ typical operating characteristics (t a = +25?, unless otherwise noted.) 10 15 20 25 30 35 40 45 50 -20 -10 0 10 20 on-resistance vs. v com (dual supplies) max4647/48 toc01 v com (v) r on ( ? ) a: v+ = +8, v- = -8v b: v+ = +10v, v- = -10v c: v+ = +12v, v- = -12v d: v+ = +15v, v- = -15v e: v+ = +20v, v- = -20v a b c d e 10 15 20 25 30 35 40 45 50 0102030 on-resistance vs. v com (single supply) max4647/48 toc02 v com (v) r on ( ? ) v+ = +12v v+ = +9v v+ = +24v v+ = +36v 0 10 5 20 15 25 30 -15 -5 0 -10 5 10 15 on-resistance vs. v com and temperature (dual supplies) max4647/48 toc03 v com (v) r on ( ? ) t a = +85 c t a = +25 c t a = -40 c v+ = +15v v- = -15v 15 20 25 30 35 40 45 50 55 0 5 10 15 on-resistance vs. v com and temperature (single supply) max4647/48 toc04 v com (v) r on ( ? ) t a = +85 c t a = +25 c t a = -40 c v+ = +12v v- = o 0.00001 0.001 0.0001 0.1 0.01 1 10 -40 20 40 -20 0 60 80 on-leakage current vs. temperature max4647/48 toc05 temperature ( c) on-leakage (na) v+ = +15v v- = -15v v com = 10v dual supplies single supply 0.0001 0.001 0.01 0.1 1 off-leakage current vs. temperature max4647/48 toc06 temeperature ( c) off-leakage (na) -40 20 40 -20 0 60 80 v+ = +15v v- = -15v v nc or v no = 10v v com = 10v dual supplies single supply electrical characteristics?single +12v supply (continued) (v+ = +12v, v- = 0, v ih = 2.4v, v il = 0.8v, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (notes 2, 3) parameter symbol conditions t a min typ max units power supply range t min to t max +9 +36 v +25 c2050 v in = 5v t min to t max 75 +25 c 0.001 1 positive supply current i+ v in = 0 or v+ t min to t max 10 a note 2: the algebraic convention is used in this data sheet; the most negative value is shown in the minimum column. note 3: sot packaged parts are 100% tested at +25?. limits across the full temperature range are guaranteed by design and correlation. note 4: flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal range.
max4647/max4648 25 ? spst analog switches in sot23-6 _______________________________________________________________________________________ 5 typical operating characteristics (continued) (t a = +25?, unless otherwise noted.) pin description 023 14 supply current vs. logic threshold max4647/48 toc10 in (v) i+ ( a) 578 6 9 10 12 13 11 14 15 0.000001 0.0001 0.00001 0.1 0.01 0.001 1 10 100 1000 v+ = +15v v- = -15v v com = +14v -40 -30 -20 -10 0 10 20 30 40 -15 -5 -10 0 5 10 15 charge injection vs. v com max4647/48 toc11 v com (v) charge (pc) a: v+ = +15v, v- = -15v b: v+ = +12v, v- = 0 a b 0 1.5 1.0 0.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 102030 logic threshold vs. supply voltage max4647/48 toc12 v+ (v) logic threshold (v) max4647 max4648 pin name function 1 nc normally closed switch terminal 1 no normally open switch terminal 2 2 v- negative supply voltage input 3 3 in digital control input 4 4 gnd ground 5 5 v+ positive supply voltage input 6 6 com analog switch common 0 -100 0.1 1 10 100 1000 frequency response -80 max4647/48 toc07 frequency (mhz) loss (db) -60 -40 -20 -30 -50 -70 -90 -10 on-response off-isolation 100 0.0001 10 1k 10k 100 100k total harmonic distortion vs.frequency max4647/48 toc08 frequency (hz) distortion (%) 0.001 0.01 0.1 1 10 v+ = +15v v- = -15v 5v rms signal 600 ? source and load signal distortion measurement limits 0.001 0.01 1 0.1 10 100 -40 10 -15 35 60 85 supply current vs. temperature max4647/48 toc09 temperature ( c) i+, i-, i gnd ( a) v+ = +15v v- = -15v in = 5v i+, i gnd i-
applications information overvoltage protection proper power-supply sequencing is recommended for all cmos devices. do not exceed the absolute maxi- mum ratings because stresses beyond the listed rat- ings can cause permanent damage to the devices. always sequence v+ on first, then v-, followed by the logic inputs, no, nc, or com. if power-supply sequencing is not possible, add two small signal diodes (d1, d2) in series with supply pins (figure 1). adding diodes reduces the analog signal range to one diode drop below v+ and one diode drop above v-, but does not affect the devices?low switch resistance and low leakage characteristics. device operation is unchanged, and the difference between v+ and v- should not exceed 44v. these protection diodes are not recommended when using a single supply. off-isolation at high frequencies in 50 ? systems, the high-frequency on-response of these parts extends from dc to above 300mhz, with a typical loss of -2db. when the switch is turned off, how- ever, it behaves like a capacitor, and off-isolation decreases with increasing frequency. this effect is more pronounced with higher source and load imped- ances. above 5mhz, circuit board layout becomes criti- cal. the graphs shown in the typical operatin g characteristics were taken using a 50 ? source and load connected with bnc connectors. max4647/max4648 25 ? spst analog switches in sot23-6 6 _______________________________________________________________________________________ t r < 20ns t f < 20ns 50% 0 logic input v- v- r l 300 ? no or nc gnd c l includes fixture and stray capacitance. v o = v com ( r l ) r l + r on switch input in +3v t off 0 com switch output 0.9v 0 0.9v 0 t on v o switch output logic input logic input waveforms inverted for switches that have the opposite logic sense. v+ c l 35pf v+ v o v com 0 repeat test for each switch. for load conditions, see electrical characteristics. max4647 max4648 figure 2. switching-time test circuit v+ com d2 d1 v- no v g v+ v- max4647 max4648 figure 1. overvoltage protection using external blocking diodes
max4647/max4648 25 ? spst analog switches in sot23-6 ________________________________________________________________________________________ 7 in 0 or 3v signal generator v+ c analyzer nc or no r l gnd com c v- v- v+ max4647 max4648 figure 4. off-isolation test circuit capacitance meter nc or no com gnd c v- v- in 0 or 3v c v+ f = 1mhz v+ max4647 max4648 figure 5. channel-off capacitance test circuit v gen gnd nc or no c l v o v- v- v+ v o v in off on off ? v o q = ( ? v o )(c l ) com v in depends on switch configuration; input polarity determined by sense of switch. off on off v in v in = +3v v+ r gen in max4647 max4648 figure 3. charge injection test circuit
max4647/max4648 25 ? spst analog switches in sot23-6 8 _______________________________________________________________________________________ capacitance meter nc or no com gnd c v- -15v in 0 or 3v c +15v f = 1mhz v+ max4647 max4648 figure 6. channel-on capacitance test circuit chip information transistor count: 24 process technology: cmos
max4647/max4648 25 ? spst analog switches in sot23-6 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 _____________________ 9 2007 maxim integrated products is a registered trademark of maxim integrated products, inc. 6lsot.eps package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .) revision history pages changed at rev 1: 1, 9
|
