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max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection _________________________________________________________________ maxim integrated products 1 general description the max14585/MAX14585A high-esd-protected double- pole/double-throw (dpdt) switches multiplex hi-speed (480mbps) usb and analog signals such as ac-coupled audio or video. these devices combine the low on- capacitance (c on ) and low on-resistance (r on ) neces- sary for high-performance switching applications in por- table electronics and include an internal negative supply to pass audio signals that swing below ground down to -1.8v. the devices also handle usb low-/full-speed sig- naling and operate from a 2.7v to 5.5v supply. the devices feature a v bus detection input (v b ) that can handle voltage up to 28v to automatically switch to the usb signal path upon detection of a valid v bus signal (v b > v vbdet ). in a dead battery situation, the voltage on v b can supply power to the part if v b is greater than 4.5v. the max14585 features internal shunt resistors on the a udio path to reduce clicks and pops heard at the output. the max14585/MAX14585A are available in a space- saving, 10-pin, 1.4mm x 1.8mm utqfn package and operate over the -40 n c to +85 n c temperature range. applications cell phones pdas and handheld devices tablet pcs benefits and features s low power consumption ? low supply current 7a (typ) ? single 2.7v to 5.5v supply operation, v cc s flexible design ? dual power-supply architecture, v b and v cc ? ano_ channel override control input s high level of integration for performance ? 28v-capable v b input with automatic unc_ selection by v bus detection ? low-capacitance hi-speed usb for both channels (unc_ and ano_) ? distortion-free negative signal throughput down to -1.8v on ano_ channel ? 3 i (typ) on-resistance ? 960mhz bandwidth ? 0.04% thd+n audio channel ? 15kv human body model (hbm) esd on com1, com2 s saves board space ? internal shunt resistor reduces clicks and pops (max14585) ? 10-pin, 1.4mm x 1.8mm utqfn package typical operating circuit 19-5878; rev 0; 5/11 ordering information appears at end of data sheet. for related parts and recommended products to use with this part, refer to www.maxim-ic.com/max14585.related . e v a l u a t i o n k i t a v a i l a b l e max14585/MAX14585A max14585 only v vbdet an02 gnd aor an01 unc2 com1com2 v b v bus v cc unc1 audio amplifier hi-speed usb transceiver combination usb and audio connector 3.0v 0.1f v ccint for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim?s website at www.maxim-ic.com. downloaded from: http:///
_________________________________________________________________ maxim integrated products 2 max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection (voltages referenced to gnd.) v cc , aor ................................................................-0.3v to +6v v b ..........................................................................-0.3v to +30v unc_, ano_, com_ (v cc r 2.7v) ... -1.9v to min(v cc + 0.3v, 3.7v) unc_, com_ (v b r 4.5v, v cc < 2.7v) ................-0.3v to +3.7v unc_, ano_, com_ (v cc < 2.7v) .. -0.3v to min(v cc + 0.3v, 3.7v) unc_, ano_, com_ (v cc = 0v, v b = 0v) .............-0.3v to +6v continuous current into any pin ................................... q 100ma continuous power dissipation (t a = +70 n c) utqfn (derate 7mw/ n c above +70 n c) ......................559mw operating temperature range .......................... -40 n c to +85 n c junction temperature range ........................... -40 n c to +150 n c storage temperature range ............................ -65 n c to +150 n c lead temperature (soldering, 10s) ................................+300 n c soldering temperature (reflow) ......................................+260 n c utqfn junction-to-ambient thermal resistance ( b ja ) .....143.2 n c/w junction-to-case thermal resistance ( b jc ) ............20.1 n c/w absolute maximum ratings note 1: package thermal resistances were obtained using the method described in jedec specification jesd51-7, using a four- layer board. for detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial . stresses beyond those listed under ?absolute maximu m ratings? may cause permanent damage to the device . these are stress ratings only, and functional ope ra- tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. package thermal characteristics (note 1) electrical characteristics (t a = -40 n c to +85 n c, unless otherwise noted. typical values are at v cc = 3v, t a = +25 n c.) (note 2) parameter symbol conditions min typ max units power supply power-supply range v cc 2.7 5.5 v supply current i supply v cc = 4.2v, 0v < v aor < 0.4v, v aor r 1.4v 7 14 f a power-supply rejection ratio psrr f = 10khz, v cc = 3.0 q 0.3v, r com_ = 50 i 100 db v b detect threshold v vbdet v bus rising, v cc r 2.7v 3 3.3 3.6 v v b detect hysteresis v vbdet_h v bus falling, v cc r 2.7v 0.2 v v b detect leakage current v b = 5.5v 40 f a analog switchanalog-signal range v unc_ v cc r 2.7v for unc_ 0 min(3.6v, v cc ) v v ano_ , v com_ v cc r 2.7v for ano_, com_ -1.8 min(3.6v, v cc ) ano_ on-resistance r on(no) v cc = 3v, v ano_ = -1.5v, +1.5v i com_ = 10ma 3 6 i unc_ on-resistance r on(nc) v cc = 3v, v unc_ = 0v to v cc , i com_ = 10ma 3 6 i v b = 4.5v, v cc = 0v to 5.5v, v unc_ = 0v to 2.5v, v aor = 0v, i com_ = 10ma 3 6 ano_ on-resistance match between channels d r on(no) v cc = 3v, v ano_ = 0v, i com_ = 10ma (note 3) 0.2 i downloaded from: http:///
_________________________________________________________________ maxim integrated products 3 max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection electrical characteristics (continued) (t a = -40 n c to +85 n c, unless otherwise noted. typical values are at v cc = 3v, t a = +25 n c.) (note 2) parameter symbol conditions min typ max units unc_ on-resistance match between channels d r on(nc) v cc = 3v, v unc_ = 0v, i com_ = 10ma (note 3) 0.2 i ano_ on-resistance flatness r flat(no) v cc = 3v, i com_ = 10ma, v ano_ = -1.5v to +1.5v (note 4) 0.04 0.2 i unc_ on-resistance flatness r flat(nc) v cc = 3v, i com_ = 10ma, v unc_ = 0v to v cc (note 4) 0.04 0.2 i shunt switch resistance r sh i ano_ = 2ma, v cc r 2.7v 700 1300 i aor pulldown resistor r aor 250 1200 k i unc_ off-leakage current i unc_(off) switch open, v unc_ = 2.5v, 0v v com_ = -1.5v, 2.5v, v cc = 3v -100 +100 na ano_ off-leakage current i ano_(off) MAX14585A, switch open, v ano_ = 2.5v, 0v, v com_ = 0v, 2.5v, v cc = 3v -100 +100 na com_ off-leakage current i com_(off) v cc = 0v, v com_ = 3.6v, v unc_ = v ano_ = unconnected -10 +800 f a com_ on-leakage current i com_(on) usb mode v cc = 3v, v ano_ = 0v, 2.5v, unconnected, v com_ = 0v, 2.5v -200 +200 na audio mode v cc = 3v, v unc_ = 0v, 2.5v, unconnected, v com_ = -1.5v, 2.5v -200 +200 na turn-on time t on ano_ to com_,figure 1 v cc = 3v, v ano_ = 1.5v, r l = 50 i ; v aor = 0v, v b = 0v to 5v or v b = 5v, v aor = 0v to v cc 45 120 f s unc_ to com_,figure 1 v cc = 3v, v unc_ = 1.5v, r l = 50 i ; v aor = 0v, v b = 0v to 5v 45 120 f s turn-off time t off ano_ from com_, figure 1 v cc = 3v, v ano_ = 1.5v, r l = 50 i ; v aor = 0v, v b = 0v to 5v 8 40 f s unc_ from com_, figure 1 v cc = 3v, v unc_ = 1.5v, r l = 50 i ; v aor = 0v, v b = 0v to 5v or v b = 5v, v aor = 0v to v cc 8 40 f s break-before-make time delay t d r l = 50 i , time delay between one side of the switch open and the other side closed 28 f s output skew (same switch) t sk(p) figure 2 40 ps output skew between switches t sk(o) figure 2 40 ps ano_ off-capacitance c no_(off) v ano_ = 0.5v p-p , dc bias = 0v, f = 1mhz 2.5 pf unc_ off-capacitance c nc_(off) v unc_ = 0.5v p-p , dc bias = 0v, f = 1mhz 2.5 pf downloaded from: http:///
_________________________________________________________________ maxim integrated products 4 max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection electrical characteristics (continued) (t a = -40 n c to +85 n c, unless otherwise noted. typical values are at v cc = 3v, t a = +25 n c.) (note 2) note 2: all devices are 100% production tested at t a = +25 n c. limits over the operating temperature range are guaranteed by design; not production tested. note 3: d r on(max) = abs(r on(ch1) - r on(ch2) ). note 4: flatness is defined as the difference between the maximum and minimum value of on-resistance, as measured over speci- fied analog-signal ranges. note 5: between two switches. figure 1. switching time parameter symbol conditions min typ max units on-capacitance c com_(on) v com_ = 0.5v p-p , dc bias = 0v, f = 240mhz, r l = 50 i 6.7 pf ac performance ano_ -3db bandwidth bw no r s = r l = 50 i , v ano_ = 0dbm, figure 3 960 mhz unc_ -3db bandwidth bw nc r s = r l = 50 i , v unc_ = 0dbm, figure 3 960 mhz off-isolation f = 100khz, v com_ = 1v rms , r l = 50 i , figure 3 -84 db crosstalk f = 100khz, v com_ = 1v rms , r l = 50 i , figure 3 (note 5) -86 db total harmonic distortion plus noise thd+n ano_ to com_, f = 20hz to 20khz, v com_ = 0.5v p-p , dc bias = 0v, r l = 600 i 0.042 % logic input aor input logic-high v ih v cc r 2.7v 1.4 v aor input logic-low v il v cc r 2.7v 0.4 v aor input leakage current i in v aor = 0v or v cc , v cc r 2.7v -22 +22 f a esd protectioncom1, com2 human body model q 15 kv iec 61000-4-2 air gap discharge q 8 iec 61000-4-2 contact discharge q 8 all other pins human body model q 2 kv t r < 5ns t f < 5ns 50% v il logic input r l com_ c l includes fixture and stray capacitance. v out = v in_ ( r l ) r l + r on v in_ v ih t off 0v ano_ or unc_ 0.9 x v 0ut 0.1 x v out t on v out switch output logic input control depends on switch configuration;input polarity determined by sense of switch. c l v out control max14585 MAX14585A downloaded from: http:///
_________________________________________________________________ maxim integrated products 5 max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection figure 2. output skew figure 3. on-loss, off-isolation, and crosstalk v in+ v in- control v out+ v out- v in+ v in- v out+ v out- unc1 or ano1 unc2 or ano2 com1com2 0v v cc v cc v cc v cc 0v0v 0v t plhx t phlx t inrise t outrise t outfall t plh = t plhx or t plhy t phl = t phlx or t phly t sk(o) = |t plhx - t plhy | or |t phlx - t phly | t sk(p) = |t plhx - t phlx | or |t plhy - t phly | 50% 50% 50% 50% 90% 10% 10% 90% 10% 10% r l r l 50% 50% 50%50% t infall 90% 90% t phly t plhy r s r s v il to v ih control depends on switch configuration. max14585 MAX14585A off-isolation is measured between com_ and "off" ano_ or unc_ terminal on each switch. on-loss is measured between com_ and "on" ano_ or unc_ terminal on each switch. crosstalk is measured from one channel to the other channel. v out unc1 com1 ano1* v in max14585 MAX14585A off-isolation = 20log v out v in on-loss = 20log v out v in crosstalk = 20log v out v in network analyzer 50 50 50 50 meas ref 50 *for crosstalk this pin is ano2. unc2 and com2 are open. downloaded from: http:///
_________________________________________________________________ maxim integrated products 6 max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection typical operating characteristics (v cc = 3.0v, t a = +25 n c, unless otherwise noted.) v b detect threshold vs. temperature max14585/85a toc09 temperature (c) v b threshold (v) 60 35 10 -15 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.52.5 -40 85 v b rising v b falling v b supply current vs. supply voltage max14585/85a toc08 v b voltage (v) v b current (a) 25 20 15 10 5 10 20 30 40 50 60 70 0 0 30 v aor = 0v or 3v supply current vs. supply voltage max14585/85a toc07 supply voltage (v) supply current (a) 5.0 4.5 4.0 3.5 3.0 1 2 3 4 5 6 7 8 9 10 0 2.5 5.5 t a = +85c t a = +25c t a = -40c com_ off-leakage current vs. temperature max14585/85a toc06 temperature (c) off-leakage current (a) 60 35 10 -15 100 200 300 400 500 600 0 -40 85 v cc = 0v v com_ = 3.6v com_ on-leakage current vs. temperature max14585/85a toc05 temperature (c) on-leakage current (na) 60 35 -15 10 5 10 15 20 3025 35 40 0 -40 85 v com_ = 2.5v ano_ on-resistance vs. com_ voltage max14585/85a toc04 v com_ (v) on-resistance ( ) 2 1 0 -1 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.02.0 -2 3 v cc = 3v i ano_ = 10ma t a = +85c t a = +25c t a = -40c unc_ on-resistance vs. com_ voltage max14585/85a toc03 v com_ (v) on-resistance ( ) 2.5 2.0 1.5 1.0 0.5 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.02.0 0 3.0 v cc = 3v i unc_ = 10ma t a = +85c t a = +25c t a = -40c ano_ on-resistance vs. com_ voltage max14585/85a toc02 v com_ (v) on-resistance ( ) 3 2 -1 0 1 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.32.5 -2 4 i ano_ = 10ma v cc = 2.7v v cc = 5v unc_ on-resistance vs. com_ voltage max14585/85a toc01 v com_ (v) on-resistance ( ) 3 2 1 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.32.5 0 4 i unc_ = 10ma v cc = 2.7v v cc = 5v downloaded from: http:///
_________________________________________________________________ maxim integrated products 7 max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection typical operating characteristics (continued) (v cc = 3.0v, t a = +25 n c, unless otherwise noted.) unc_ eye diagram max14585/85a toc14 time ((x10 -9 )s) differential signal (v) 0.50.4 0.3 0.2 0.1 0 -0.1-0.2 -0.3 -0.4 -0.5 2.0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 total harmonic distortion plus noise vs. frequency max14585/85a toc13 frequency (hz) thd+n (%) 10,000 1000 100 0.01 0.1 1 10 0.001 10 100,000 r l = 600 frequency response max14585/85a toc12 frequency (mhz) magnitude (db) 100 10 1 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 -100 0.1 1000 off-isolation crosstalk on-loss turn-on time vs. supply voltage max14585/85a toc11 supply voltage (v) turn-on time (s) 5.0 4.5 4.0 3.5 3.0 10 20 30 40 50 60 70 80 90 100 0 2.5 5.5 ano_ to com_ toggle v b unc_ to com_ turn-off time vs. supply voltage max14585/85a toc10 supply voltage (v) turn-on time (s) 5.0 4.5 3.0 3.5 4.0 5 10 15 20 25 30 35 40 0 2.5 5.5 ano_ from com_ toggle v b unc_ from com_ downloaded from: http:///
_________________________________________________________________ maxim integrated products 8 max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection pin configuration pin description pin name function 1 unc1 usb input 1. normally closed terminal for switch 1. 2 ano2 audio input 2. normally open terminal for switch 2. 3 ano1 audio input 1. normally open terminal for switch 1. 4 gnd ground 5 v cc positive supply-voltage input. bypass v cc to gnd with a 0.1 f f capacitor as close as possible to the device. 6 com1 common terminal for switch 1 7 com2 common terminal for switch 2 8 aor audio override input. drive aor low to have v b control the switch. drive aor high to connect com_ to ano_. aor has an internal pulldown resistor to gnd. 9 v b v bus detection input. if v b r v vbdet , com_ connects to unc_. otherwise, com_ connects to ano_. 10 unc2 usb input 2. normally closed terminal for switch 2. 1 2 7 6 3 4 5 ano1 gnd v cc unc2 unc1 ano2 com2 com1 v b aor 10 9 8 + utqfn top view max14585 MAX14585A downloaded from: http:///
_________________________________________________________________ maxim integrated products 9 max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection detailed description the max14585/MAX14585A are high-esd-protected single dpdt switches that operate from a 2.7v to 5.5v supply and are designed to multiplex hi-speed usb signals and ac-coupled analog signals. these switches combine the low on-capacitance (c on ) and low on-resis- tance (r on ) necessary for high-performance switching applications. these devices meet the requirements for usb low-speed and full-speed signaling. the negative signal capability of the analog channel allows signals below ground to pass through without distortion. analog-signal levels the devices are bidirectional, allowing ano_, unc_, and com_ to be configured as either inputs or outputs. note that unc_ and ano_ are only protected against esd up to q 2kv (hbm) and could require additional esd protec- tion if used as outputs. these devices feature a charge pump that generates a negative supply to allow analog signals as low as -1.8v to pass through ano_ when v cc supply is greater than 2.7v. this allows ac-coupled sig- nals that drop below ground to pass when operating from a single power supply. functional diagrams/truth table max14585 v vbdet ano2 gnd aor ano1 unc2 com1com2 v b v cc unc1 v ccint MAX14585A v vbdet ano2 gnd aor ano1 unc2 com1com2 v b v cc unc1 v ccint ano_shunt max14585 on off off ano_ max14585/MAX14585A off on on unc_ on off off aor 0 0 1 v b > v vbdet < v vbdet x x = don?t care downloaded from: http:///
________________________________________________________________ maxim integrated products 10 max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection figure 4. human body esd test model when v cc is below 2.7v and v b is less than 4.5v, the switches accept signals from 0 to 3.6v but do not switch according to the functional diagrams/truth table . v bus detection input the devices feature a v bus detection input (v b ) that con- nects com_ to unc_ when v b exceeds the v bus detection threshold (v vbdet ). for applications where v bus is always present, drive the audio override input (aor) high to con- nect ano_ to com_ (see the functional diagrams/truth table ). drive aor low to have v b control the switch posi- tion. drive aor rail-to-rail to minimize power cons umption. the v b input is capable of handling voltage up to 28v for higher v bus application. in the case where the main power v cc is lost due to an event such as a dead battery, v b becomes the power supply if v b is greater than 4.5v. click-and-pop suppression (max14585) the switched 700 i (typ) shunt resistors on the max14585 automatically discharge any capacitance at the ano_ terminals when they are unconnected from com_. this reduces audio click-and-pop sounds that can occur when switching between usb and audio sources. applications information extended esd protection esd protection structures are incorporated on all pins to protect against electrostatic discharges up to q 2kv (hbm) encountered during handling and assembly. com1 and com2 are further protected against esd up to q 15kv (hbm) without damage. the esd structures withstand high esd in both normal operation and when the devices are powered down. after an esd event, the devices continue to function without latchup. esd test conditions esd performance depends on a variety of conditions. contact maxim for a reliability report that documents test setup, test methodology, and test results. human body model figure 4 shows the hbm. figure 5 shows the current waveform it generates when discharged into a low- impedance state. this model consists of a 100pf capaci- tor charged to the esd voltage of interest that is then discharged into the device through a 1.5k i resistor. figure 5. human body current waveform charge-current- limit resistor discharge resistance storagecapacitor c s 100pf r c 1m r d 1500 high- voltage dc source device under test i p 100% 90% 36.8% t rl time t dl current waveform peak-to-peak ringing(not drawn to scale) i r 10% 0 0 amperes downloaded from: http:///
________________________________________________________________ maxim integrated products 11 max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection figure 6. iec 61000-4-2 esd test model figure 7. iec 61000-4-2 esd generator current waveform iec 61000-4-2 the iec 61000-4-2 standard covers esd testing and performance of finished equipment. it does not spe- cifically refer to integrated circuits. the major difference between tests done using the hbm and iec 61000-4-2 is higher peak current in iec 61000-4-2, because series resistance is lower in the iec 61000-4-2 model. hence, the esd withstand voltage measured to iec 61000-4-2 is generally lower than that measured using the hbm. figure 6 shows the iec 61000-4-2 model and figure 7 shows the current waveform for the q 8kv, iec 61000-4-2, level 4, esd contact-discharge method. layout hi-speed usb requires careful pcb layout with 45 i single-ended/90 i differential controlled-impedance matched traces of equal lengths. ensure that bypass capacitors are as close to the device as possible. use large ground planes where possible. note: all devices are specified over the -40c to +85c tem- perature range. + denotes a lead(pb)-free/rohs-compliant package. t = tape and reel. ordering information/ selector guide chip information process: bicmos package information for the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages . note that a ?+?, ?#?, or ?-? in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing pertains to the package regardless of rohs status. part top mark shunt resistor pin-package max14585 evb+t aay yes 10 utqfn MAX14585A evb+t aaz no 10 utqfn package type package code outline no. land pattern no. 10 utqfn v101a1cn+1 21-0028 90-0287 charge current limit resistor discharge resistance storagecapacitor c s 150pf r c 50m to 100m r d 330 high- voltage dc source device under test t r = 0.7ns to 1ns 30ns 60ns t 100% 90%10% i peak i downloaded from: http:///
maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit 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 12 ? 2011 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. max14585/MAX14585A hi-speed usb and audio switches with negative signa l capability and high-voltage-tolerable v bus detection revision history revision number revision date description pages changed 0 5/11 initial release ? downloaded from: http:///

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