View AS1742G-T_8035688.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

as1741, as1742, as1743 high-speed, low-voltage, single-supply, 0.8 ? , dual spst analog switches austria micro systems data sheet www.austriamicrosystems.com revision 1.76 1 - 15 1 general description the as1741/as1742/as1743 are high-speed, low-volt- age, dual single-pole/single-throw (spst) analog switches. fast switching speeds, low on-resistance, and low power-consumption make these devices ideal for single- cell battery powered applications. these highly-reliable devices operate from a single +1.6 to +3.6v supply, and are differentiated by the type and number of switches as listed in ta b l e 1 . the as1743 supports brea k-before-make switching. with very low on-resistance (r on ), r on matching, and r on flatness, the devices can accurately sw itch signals for sample and hold circuits, digital filters, and op-amp gain switching networks. the as1741/as1742/as1743 digital logic input is 1.8v cmos-compatible when using a single +3v supply, and all devices can handle rail-to-rail signals. the devices are available in an 8-pin msop package and an 8-pin sot23 package. figure 1. msop block diagrams 2 key features on-resistance: -0.8 ? (+3v supply) -2.5 ? (+1.8v supply) r on matching: 0.08 ? (+3v supply) r on flatness: 0.18 ? (+3v supply) supply voltage range: +1.6 to +3.6v switching action: t on = 22ns, t off = 14ns current-handling: 250ma continuous break-before-make switching (as1743) rail-to-rail signal handling 1.8v cmos logic compatible (+3v supply) total harmonic distortion: 0.03% operating temperature range: -40 to +85oc package types: - 8-pin msop - 8-pin sot23 3 applications the devices are ideal for use in power routing systems, cordless and mobile phones, mp3 players, cd and dvd players, pdas, handheld computers, digital cameras, hard drives, and any other application where high-speed signal switching is required. table 1. standard products model switch types as1741 two normally open (no) switches as1742 two normally closed (nc) switches as1743 one no switch and one nc switch as1741 as1743 as1742 no1 com1 in2 gnd v+ in1 com2 no2 nc1 com1 in2 gnd v+ in1 com2 nc2 nc2 v+ in1 com2 no1 com1 in2 gnd
www.austriamicrosystems.com revision 1.76 2 - 15 as1741, as1742, as1743 austria micro systems data sheet 4 absolute maximum ratings stresses beyond those listed in table 2 may cause permanent damage to the device. these are stress ratings only, and functional operation of the de vice at these or any other cond itions beyond those indicated in section 5 electrical characteristics on page 3 is not implied. exposure to absolute maxi mum rating conditions for extended periods may affect device reliability. ? signals on pins com1, com2, no1, no2, nc1, or nc2 that exceed v+ or gnd are clamped by internal diodes. limit forward-diode current to the maximum current rating. table 2. absolute maximum ratings parameter min max units comments v+, in x to gnd -0.3 +5 v com x , no x , nc x to gnd ? -0.3 v+ + 0.3 v com x , no x , nc x continuous current -250 +250 ma com x , no x , nc x peak current -350 +350 ma pulsed at 1ms 10% duty cycle continuous power dissipation (t amb = +70oc) 362 mw derate at 4.5mw/oc above +70oc electro-static discharge 2500 v hbm mil-std883e 3015.7 methods latch up immunity in1, in2 150 ma norm: jedec 17 latch up immunity all other pins 250 ma operating temperature range -40 +85 oc junction temperature +150 oc storage temperature range -65 +150 oc package body temperature +260 oc the reflow peak soldering temperature (body temperature) specified is in accordance with ipc/jedec j-std-020c ?moisture/reflow sensitivity classification for non-hermetic solid state surface mount devices?
www.austriamicrosystems.com revision 1.76 3 - 15 as1741, as1742, as1743 austria micro systems data sheet 5 electrical characteristics v+ = +2.7 to +3.6v, v ih = +1.4v, v il = +0.5v, t amb = t min to t max (unless otherwise specified). typ values @ v+ = +3.0v, t amb = +25oc. table 3. power supply characteristics symbol parameter conditions min typ max unit v+ power supply range 1.6 3.6 v i+ positive supply current v+ = 3.6v, v in x = 0 or v+, all channels on or off 0.01 1 a table 4. +3v supply electrical characteristics symbol parameter conditions min typ max unit analog switch v com x , v no x , v nc x analog signal range 0 v+ v r on on-resistance v+ = 2.7v, i com x = 100ma, v no x or v nc x = 1.5v t amb = +25oc 0.35 0.8 ? t amb = t min to t max 0.9 ? r on on-resistance match between channels 1 v+ = 2.7v, i com x = 100ma, v no x or v nc x = 1.5v t amb = +25oc 0.02 0.08 ? t amb = t min to t max 0.09 r flat(on) on-resistance flatness 2 v+ = 2.7v, i com x = 100ma, v no x or v nc x = 1, 1.5, or 2v t amb = +25oc 0.02 0.18 ? t amb = t min to t max 0.20 i no x (off) , i nc x (off) no x or nc x off- leakage current v+ = 3.3v, v com x = 0.3 or 3.0v, v no x or v nc x = 3.0 or 0.3v t amb = +25oc -1 1 na t amb = t min to t max -5 5 i com x (off) com x off-leakage current v+ = 3.3v, v com x = 0.3 or 3.0v, v no x or v nc x = 3.0, 0.3v t amb = +25oc -1 1 na t amb = t min to t max -5 5 i com x (on) com x on-leakage current v+ = 3.3v, v com x = 3.0 or 0.3v, no x or v nc x = 3.0 or 0.3v t amb = +25oc -2 2 na t amb = t min to t max -10 10 switch dynamic characteristics t on turn on time 3 v no x or v nc x = 1.5v, r load = 50 ? , c load = 35pf, figures 12 , 13 t amb = +25oc 13 22 ns t amb = t min to t max 24 t off turn off time 3 v no x or v nc x = 1.5v, r load = 50 ? , c load = 35pf, figures 12 , 13 t amb = +25oc 7 14 ns t amb = t min to t max 15 t bbm break before make 3 v no x or v nc x = 1.5v, r load = 50 ? , c load = 35p, figure 14 (as1743) t amb = +25oc 6 ns t amb = t min to t max 1 q charge injection v gen = 3.3v, r gen = 0, c load = 1.0nf, figure 15 8-pin msop 6 pc 8-pin sot23 5 c off no x , nc x off- capacitance f = 1mhz, figure 16 35 pf c com x (off) com x off-capacitance f = 1mhz, figure 16 35 pf c com x (on) com x on-capacitance f = 1mhz, figure 16 35 pf bw -3db on-channel bandwidth signal = 0, r in = r out = 50 ? , c load = 5pf, figure 17 130 mhz v iso off-isolation 4 f = 1mhz, v com x = 1v rms , r load = 50 ? , c load = 5pf, figure 17 -55 db crosstalk 5 f = 1mhz, v com x = 1v rms , r load = 50 ? , c load = 5pf, figure 17 -100 db thd total harmonic distortion f = 20hz to 20khz, v com x = 2vp-p, r load = 32 ? 0.03 %
www.austriamicrosystems.com revision 1.76 4 - 15 as1741, as1742, as1743 austria micro systems data sheet v+ = +1.8v, v ih = +1.0v, v il = 0.4v, t amb = t min to t max (unless otherwise specified). typ values @ t amb = +25oc. 1. ? r on = r on(max) - r on(min) . 2. flatness is defined as the difference between the maxi mum and the minimum value of on-resistance as measured over the specified analog signal ranges. 3. guaranteed by design. 4. off-isolation = 20log10(v com x /v no x ), v com x = output, v no x = input to off switch. 5. between two switches. logic input v ih input logic high 1.4 v v il input logic low 0.5 v i in input leakage current v in x = 0 or v+ -1000 0.1 1000 na table 5. +1.8v supply electrical characteristics symbol parameter conditions min typ max unit analog switch v com x , v no x , v nc x analog signal range 0 v+ v r on on-resistance i com x = 10ma, v no x or v nc x = 0.9v t amb = +25oc 0.9 2.5 ? t amb = t min to t max 3 i no x (off) , i nc x (off) no x or nc x off- leakage current v com x = 0.3 or 1.5v, v no x or v nc x = 1.5 or 0.3v t amb = +25oc -1 1 na t amb = t min to t max -5 5 i com x (off) com x off-leakage current v com x = 0.3 or 1.5v, v no x or v nc x = 1.5 or 0.3v t amb = +25oc -1 1 na t amb = t min to t max -5 5 i com x (on) com x on-leakage current v com x = 0.3 or 1.5v, v no x or v nc x = 0.3 or 1.5v t amb = +25oc -2 2 na t amb = t min to t max -10 10 switch dynamic characteristics t on turn on time 3 v no x or v nc x = 1.5v, r load = 50 ? , c load = 35pf, figures 12 , 13 t amb = +25oc 21 30 ns t amb = t min to t max 35 t off turn off time 3 v no x or v nc x = 1.5v, r load = 50 ? , c load = 35pf, figures 12 , 13 t amb = +25oc 12 20 ns t amb = t min to t max 25 t bbm break-before-make 3 v no x or v nc x = 1.5v, r load = 50 ? , c load = 35p, figure 14 , (as1743) t amb = +25oc 8 ns t amb = t min to t max 1 q charge injection v gen = 1.8v, r gen = 0, c load = 1.0nf, figure 15 8-pin msop 6 pc 8-pin sot23 2.5 v iso off-isolation 4 f = 1mhz, v com x = 1v rms , r load = 50 ? , c load = 5pf, figure 17 -50 db crosstalk 5 f = 1mhz, v com x = 1v rms , r load = 50 ? , c load = 5pf, figure 17 -100 db logic input v ih input logic high 1 v v il input logic low 0.4 v i in input leakage current v in x = 0 or v+ -1000 0.1 1000 na table 4. +3v supply electrical characteristics (continued) symbol parameter conditions min typ max unit
www.austriamicrosystems.com revision 1.76 5 - 15 as1741, as1742, as1743 austria micro systems data sheet 6 typical operating characteristics figure 2. charge injection vs. output voltage; sot23 f igure 3. charge injection vs. output voltage; msop figure 4. r on vs. v com and temperature; v dd = 2.7v figure 5. r on vs. v com figure 6. t on /t off vs. supply voltage figure 7. t on /t off vs. temperature 0 5 10 15 20 25 30 35 40 45 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 3.3 v bias (v) q (pc) v dd = 3v v dd = 1.8v 0 5 10 15 20 25 30 35 40 45 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 3.3 v bias (v) q (pc) v dd = 3v v dd = 1.8v 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0 0.5 1 1.5 2 2.5 3 v com (v) r on ( ? ) 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 00.511.522.533.5 v com (v) r on ( ? ) temp = -40oc v dd = 1.8v v dd = 2.5v v dd = 2.7v v dd = 3v v dd = 3.6v v dd = 2v v dd = 3.3v temp = +25oc temp = +85oc 0 5 10 15 20 25 -40 -15 10 35 60 85 temperature (c) t on /t off (ns) 4 6 8 10 12 14 16 18 20 22 24 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 v dd (v) t on /t off (ns) t on t off t on /v dd = 3v t off /v dd = 3v t on /v dd = 1.8v t off /v dd = 1.8v
www.austriamicrosystems.com revision 1.76 6 - 15 as1741, as1742, as1743 austria micro systems data sheet figure 8. thd vs. frequency; r load = 32 ? , v dd = 3v figure 9. frequency response -120 -100 -80 -60 -40 -20 0 20 0.001 0.1 10 1000 frequency (mhz) loss (db) 0.00 0.01 0.02 0.03 0.04 0.05 0.06 110100 frequency (khz) thd (%) bandwidth
www.austriamicrosystems.com revision 1.76 7 - 15 as1741, as1742, as1743 austria micro systems data sheet pin assignments 7 pinout pin assignments figure 10. msop pin assignments (top view) figure 11. sot23 pin assignments (top view) pin descriptions table 6. pin descriptions pin number pin name description see figure 10 and figure 11 com1 analog switch 1 common com2 analog switch 2 common gnd ground in1 analog switch 1 logic control input in2 analog switch 2 logic control input nc1 analog switch 1 normally closed terminal nc2 analog switch 2 normally closed terminal no1 analog switch 1 normally open terminal no2 analog switch 2 normally open terminal v+ input supply voltage . +1.6 to +3.6v as1742 8 v+ 5 nc2 6 com2 7 in1 1 nc1 4 gnd 3 in2 2 com1 as1741 8 v+ 5 no2 6 com2 7 in1 1 no1 4 gnd 3 in2 2 com1 as1743 8 v+ 5 nc2 6 com2 7 in1 1 no1 4 gnd 3 in2 2 com1 as1742 8 nc1 5 gnd 6 in2 7 com1 1 in1 4 com2 3 nc2 2 v+ as1741 8 no1 5 gnd 6 in2 7 com1 1 in1 4 com2 3 no2 2 v+ as1743 8 no1 5 gnd 6 in2 7 com1 1 in1 4 com2 3 nc2 2 v+
www.austriamicrosystems.com revision 1.76 8 - 15 as1741, as1742, as1743 austria micro systems data sheet on resistance 8 detailed description the as1741/as1742/as1743 are low on-resistance, low-volta ge, dual analog spst switches that operate from a sin- gle +1.6 to +3.6v supply. cmos process technology allows switching of analog signals that are within the supply voltage range (gnd to v+). on resistance when powered from a +3v supply, the as1741/as1742/as1743 low (0.8 ? , max) on-resistance allows high-speed, continuous signals to be switched in a variety of applications. all devices have very low r on flatness (0.18 ? , max) so they can meet or exceed the low-distortion audio requirements of modern portable audio devices. bi-directional switching pins no x , nc x , and com x are bi-directional and can be used as inputs or outputs. analog signal levels analog signals ranging over the entire supply voltage range (v + to gnd) can be passed with very little change in on- resistance (see typical operating characteristics on page 5 ). logic inputs the as1741/as1742/as1743 logic inputs can be driven up to +3.6v regardless of the supply voltage value. for exam- ple, with a +1.8v supply, in x may be driven low to gnd and high to +3.6v. this allows the devices to interface with +3v systems using a supply of less than 3v.
www.austriamicrosystems.com revision 1.76 9 - 15 as1741, as1742, as1743 austria micro systems data sheet power supply sequencing 9 application information power supply sequencing proper power-supply sequencing is critical for proper switch o peration. the power supplies should be started up in the following sequence: 1. v+ 2. no x, nc x, com x note: operation beyond the absolute maximum ratings (see page 2) may permanently damage the devices. power supply bypass power supply connections to the devices must maintain a low impedance to ground. this can be done using a bypass capacitor, which will also improve noise margin and prevent switching noise propagation from the v+ supply to other components. a 0.1f bypass capacitor, connected from v+ to gnd (see figure 17 on page 11 ), is adequate for most applications. logic inputs driving in x rail-to-rail will help minimize power consumption. layout considerations high-speed switches require proper layout and design procedures for optimum performance. short, wide traces should be used to reduce stray inductance and capacitance. bypass capacitors should be as close to the device as possible. large ground planes should be used wherever possible. timing diagrams and test setups figure 12. as1741/ as1743 test circuit and timing diagram figure 13. as1742 / as1743 test circuit and timing diagram as1741/ as1743 com x no x 35pf 50 ? v comx in x v nox 50 ? v+ v+ v comx in x 0 0 v nox v ih + 0.5v t on t off t r < 5ns t f < 5ns 50% 50% 90% 90% gnd as1742/ as1743 com x nc x 35pf 50 ? v comx in x v ncx 50 ? v+ v+ v comx in x 0 0 v ncx v ih + 0.5v t off t on 50% 50% 90% 90% gnd t r < 5ns t f < 5ns
www.austriamicrosystems.co m revision 1.76 10 - 15 as1741, as1742, as1743 austria micro systems data sheet timing diagrams and test setups figure 14. as1743 test circuit and timing diagram figure 15. charge injection figure 16. nox, ncx, and comx capacitance as1743 com2 no1 35pf 50 ? v comx nc2 in x v s v s 50 ? v+ v+ v comx in x 0 0 v s v ih + 0.5v t bbm 90% t bbm 90% t bbm = t on(nox) - t off(ncx) or t bbm = t on(ncx) - t off(nox) gnd t r < 5ns t f < 5ns com1 as174x com x nc x or no x c load 1000pf v out in x v gen 50 ? v+ v+ v in 0 v+ ? v out v out as1741 as1742 ? v out is the measured voltage due to charge transfer error q when the channel turns off. q = ? v out x c load gnd r gen v in as1741/ as1742/ as1743 com x nc x or no x in x v+ v+ as required 1mhz capacitance analyzer gnd
www.austriamicrosystems.co m revision 1.76 11 - 15 as1741, as1742, as1743 austria micro systems data sheet timing diagrams and test setups figure 17. off-isolation, on-loss, and crosstalk notes: 1. measurements are standardized against short-circuit at socket terminals. 2. off-isolation is measured between com x and the off nc x /no x terminal of each switch. off-isolation = 20log(v out /v in ). 3. signal direction through the switch is reversed; worst values are recorded. as1741/ as1742/ as1743 com x no x or nc x in x v+ v+ 50 ? 50 ? 50 ? 50 ? v in v out 0.1f measure reference gnd v+ network analyzer ? use 50 ? termina- tion for off-isolation ?
www.austriamicrosystems.co m revision 1.76 12 - 15 as1741, as1742, as1743 austria micro systems data sheet 10 package drawings and markings the devices are available in an 8-pin msop package and an 8-pin sot23 package. figure 18. 8-pin msop package notes: 1. all dimensions are in millimeters, an gles in degrees, unless otherwise specified. 2. datums b and c to be determined at datum plane h. 3. dimensions d and e1 are to be determined at datum plane h. 4. dimensions d2 and e2 are for top package; dimensions d and e1 are for bottom package. 5. cross section a-a to be determined at 0.13 to 0.25mm from lead tip. 6. dimensions d and d2 do not include mold flash, protrusion, or gate burrs. 7. dimensions e1 and e2 do not include interlead flash or protrusion. symbol typ tol symbol typ tol a 1.10 max b 0.33 +0.07/-0.08 a1 0.10 0.05 b1 0.30 0.05 a2 0.86 0.08 c 0.18 0.05 d 3.00 0.10 c1 0.15 +0.03/-0.02 d2 2.95 0.10 1 3.0o 3.0o e 4.90 0.15 2 12.0o 3o e1 3.00 0.10 3 12.0o 3o e2 2.95 0.10 l 0.55 0.15 e3 0.51 0.13 l1 0.95bsc - e4 0.51 0.13 aaa 0.10 - r 0.15 +0.15/-0.08 bbb 0.08 - r1 0.15 +0.15/-0.08 ccc 0.25 - t1 0.31 0.08 e 0.65 bsc - t2 0.41 0.08 s 0.525 bsc -
www.austriamicrosystems.co m revision 1.76 13 - 15 as1741, as1742, as1743 austria micro systems data sheet figure 19. 8-pin sot23 package symbol min max a 0.90 1.45 a1 0.00 0.15 a2 0.90 1.30 b 0.22 0.38 c 0.09 0.20 d 2.80 3.10 e 2.60 3.00 e1 1.50 1.75 l 0.35 0.55 e 0.65ref e1 1.95ref 0o 10o notes: 1. all dimensions are in millimeters. 2. foot length measured at intercept point between datum a and lead surface. 3. package outline exclusive of mold flash and metal burr. 4. package outline inclusive of solder plating. 5. complies with eiaj sc74 (6-lead version). 6. pkgst0005 (rev b) refer to sot23 8-lead sot23-d-2019 (rev c) package outline.
www.austriamicrosystems.co m revision 1.76 14 - 15 as1741, as1742, as1743 austria micro systems data sheet 11 ordering information the devices are available as the standard products shown in table 7 . ? available upon request table 7. ordering information model markings description delivery form package as1741g dual spst switch tube 8-pin msop as1741g-t dual spst switch tape and reel 8-pin msop as1741h-t ? asjl dual spst switch tape and reel 8-pin sot23 as1742g dual spst switch tube 8-pin msop AS1742G-T dual spst switch tape and reel 8-pin msop as1742h-t asjk dual spst switch tape and reel 8-pin sot23 as1743g dual spst switch tube 8-pin msop as1743g-t dual spst switch tape and reel 8-pin msop as1743h-t ? asjm dual spst switch tape and reel 8-pin sot23
www.austriamicrosystems.co m revision 1.76 15 - 15 as1741, as1742, as1743 austria micro systems data sheet copyrights copyright ? 1997-200 5, austriamicrosystems ag, schloss premstaett en, 8141 unterpremstae tten, austria-europe. trademarks registered ?. all rights reserved. the materi al herein may not be reproduced, adapted, merged, trans- lated, stored, or used without the prior written consent of the copyright owner. all products and companies mentioned are trademarks or registered trademarks of their respective companies. disclaimer devices sold by austriamicrosystems ag are covered by t he warranty and patent indemni fication provisions appearing in its term of sale. austriamicrosystems ag makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriami- crosystems ag reserves the right to chang e specifications and prices at any time and without notice. therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems ag for current information. this product is intended for use in normal commercial a pplications. applications r equiring extended temperature range, unusual environmental requirements, or high reliability app lications, such as military, medical life-support or life- sustaining equipment are specifically not recommended withou t additional processing by austriamicrosystems ag for each application. for shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. the information furnished here by austriamicrosystems ag is believed to be correct and accurate. however, austriamicrosystems ag shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or ar ising out of the furnishing, performance or use of the tech- nical data herein. no obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems ag rendering of technical or other services. contact information headquarters austriamicrosystems ag a-8141 schloss premstaetten, austria tel: +43 (0) 3136 500 0 fax: +43 (0) 3136 525 01 e-mail: info@austriamicrosystems.com for sales offices, distributors and representatives, please visit: http://www.austriamicrosystems.com austria micro systems ? a leap ahead

▲Up To Search▲

Price & Availability of AS1742G-T

	To Download AS1742G-T Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .