single hall effect switch ats137 this datasheet contains new product information. anachip corp. reserves the rights to modify the product specification without notice. no liability is assumed as a result of the use of this product. no rights under any patent accompany the sale of the product. rev.1.2 mar. 29, 2006 1/9 atc ? features - 3.5v to 20v dc operation voltage - temperature compensation - wide operating voltage range - open-collector pre-driver - 25ma maximum sinking output current. - reverse polarity protection ? applications - vcd/dvd loader, cd/dvd rom - cover detector - speed measurement - home appliances - home safety ? general description ats137 is an switched ha ll-effect ic which is for contactless switching applications. the device includes an on-chip hall voltage generator for magnetic sensing, an amplifier that amplifies the hall voltage, a schmitt trig ger to provid e switching hysteresis for noise rejection, and an open-collector output. the bandgap regulator allows a wide operating voltage range. ats137 is rated for operating temperature range from -20 c to 85 c and voltage range from 3.5v to 20v. ? ordering information ats137 x x x -x packing p: sip3 w: sot23 package lead l : lead free wafer body blank or a~z : if necessary to specify single hall-effect switch -x magnetic characteristics a or b spread-leg ammo blank : bulk a : tape & reel for sot23 pack for sip-3l; ? typical circuit ats 137 3.5v ~20v digital output vcc do vss l r this anachip version datasheet is replaced with diodes inc. datasheet ats137
single hall effect switch ats137 anachip corp. www.anachip.com.tw rev.1.2 mar. 29, 2006 2/9 atc ? functional block diagrams regulator hall plate amp 1 3 2 vcc vss do ? pin descriptions 137 1 2 : vss 3 : do 23 137 1 2 3 1 : vcc top view name p/i/o pin # description vcc p 1 positive power supply vss p 2 ground do o 3 digital output this anachip version datasheet is replaced with diodes inc. datasheet ats137
single hall effect switch ats137 anachip corp. www.anachip.com.tw rev.1.2 mar. 29, 2006 3/9 atc ? absolute maximum ratings ( at ta=25 o c ) characteristics symbol values unit supply voltage v cc 20 v reverse vcc polarity voltage v rcc -20 v magnetic flux density b unlimited output off voltage vce 30 v output ?on? current continuous ic 25 ma operating temperature ta -20~+85 c storage temperature ts -65~+150 c maximum junction temp. tj 150 c sip-3l 550 mw package power dissipation sot23-3l pd 230 mw ? recommended operat ing conditions ( ta = 25 c ) paramter symbol conditions rating unit supply voltage v cc operating 3.5~20 v ? electrical characteristics (ta=+ 25 c) characteristic symbol test conditions min typ max units output saturation voltage vce(sat) vcc=14v, ic=20ma - 300 700 mv output leakage current icex vce=14v, vcc=14v - < 0.1 10 ua supply current icc vcc=20v, output open - 5 10 ma output rise time tr vcc=14v, rl=820 ? , cl=20pf - 0.3 1.5 us output falling time tf vcc=14v, rl=820 ? , cl=20pf - 0.3 1.5 us ? test circuit cl 14v do rl=820 ohm cl=20 pf rl test circuit this anachip version datasheet is replaced with diodes inc. datasheet ats137
single hall effect switch ats137 anachip corp. www.anachip.com.tw rev.1.2 mar. 29, 2006 4/9 atc ? magnetic characteristics (ta=25 o c, v cc =14v) (1mt=10gauss) a grade parameter symbol min. typ. max. unit operate point bop - - 100 gauss release point brp 10 - - gauss hysteresis bhys - 80 - gauss b grade (for sip3 only) parameter symbol min. typ. max. unit operate point bop - - 130 gauss release point brp 10 - - gauss hysteresis bhys - 80 - gauss ? application information -operating principle ats137 is a three pins hall effect switch ic which can turn magnetic flux variety to digital output signal. in other words, it is an interface from magnetic system to electrical one by hall effect. the illustrations are shown in fig.1. vo vce(sat) vcc magnetic flux (gauss) turn on turn off hys b op b rp b magnet electrical s marking side fig.1 hall-effect switch output driver is open-collector topology and maximum sink current (i sink ) is 25ma. the illustrated circuit is shown as fig.2. ats 137s 3.5v ~20v digital output vcc do vss vo l r sink i fig.2 application circuit this anachip version datasheet is replaced with diodes inc. datasheet ats137
single hall effect switch ats137 anachip corp. www.anachip.com.tw rev.1.2 mar. 29, 2006 5/9 atc ? application informat ion (continued) vo will turn on(low) if the s magnetic flux larger th an operation point (bop), and turns off whenever the magnetic flux is removed and lower than release point (brp). the related waveforms are shown in fig.3. bop brp vce(sat) vcc vo magnetic flux (mt) t t marking side s ( sip3 ) n marking side s ( sot23 ) n fig.3 vo and magnetic flux variety the major applications are for contactless switching and shown as follows: - vcd/dvd loader, cd/dvd rom: detect if the tray is opened or closed - cover detector (open/close): cellular phone cover de tector, refrigerator door detector, microwave oven door sensor? etc - home safety: instead of reed relay to detect the situation of door/window. - due to contactless and wi thout mechanical contact point, its reliab ility and life cycle are much longer than reed relay. in addition, its switching speed is much faster than mechanical devices. this anachip version datasheet is replaced with diodes inc. datasheet ats137
single hall effect switch ats137 anachip corp. www.anachip.com.tw rev.1.2 mar. 29, 2006 6/9 atc ? performance characteristics (sip3) ta ( c) 25 50 60 70 80 85 90 95 100 pd (mw) 550 440 396 352 308 286 264 242 220 ta ( c) 105 110 115 120 125 130 135 140 150 pd (mw) 198 176 154 132 110 88 66 44 0 power dissipation curve 0 100 200 300 400 500 600 0 25 50 75 100 125 150 ta ( c) pd (mw ) 85 ? performance charact eristics (sot23-3) ta ( c) 25 50 60 70 80 85 90 100 110 120 125 130 140 150 pd (mw) 230 184 166 147 129 120 110 92 74 55 46 37 18 0 power dissipation curve 0 100 200 300 0 25 50 75 100 125 150 ta ( c) pd (mw) 85 ? marking information (1) sot23 (2) sip3 ja: ats137 xx ym x date code y : year m : month (a~l) (top view) id code a~z: non-lead free a~z: lead free 137 yww x date code y : year ww : nth week (top view) id code a~z: non-lead free a~z : lead free this anachip version datasheet is replaced with diodes inc. datasheet ats137
single hall effect switch ats137 anachip corp. www.anachip.com.tw rev.1.2 mar. 29, 2006 7/9 atc ? package information (unit: mm) (1) package type: sip-3l for bulk pack active area depth sensor location 123 2.00mm 1.15mm 0.51mm nom branded surface package dimension 1.57mm 1.47mm 4.17mm 4.04mm 1.82 mm 15.50mm 13.00mm 1 2 3 1.27mm 0.41mm 0.41mm 45 o 45 o 0.38mm 0.7mm 3.10mm 2.97mm this anachip version datasheet is replaced with diodes inc. datasheet ats137
single hall effect switch ats137 anachip corp. www.anachip.com.tw rev.1.2 mar. 29, 2006 8/9 atc ? package information (continued) (2) package type: spread leg sip-3l for ammo-pack only po w f2 f1 w1 h d0 b a l p2 p p h h a d b2 t1 t ansicht a-b view a-b dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 2.80 3.00 3.20 0.110 0.118 0.125 d 3.90 4.10 4.30 0.153 0.161 0.169 b2 0.33 0.38 0.42 0.012 0.014 0.016 d0 3.80 4.00 4.20 0.149 0.157 0.165 f1 2.35 2.55 2.75 0.092 0.100 0.108 f2 2.45 2.55 2.85 0.096 0.100 0.112 h - - 20 - - 0.787 h - - 1 - - 0.039 l - - 11 - - 0.433 p0 12.2 12.7 13.2 0.480 0.5 0.519 p2 5.95 6.35 6.75 0.234 0.25 0.265 p - - 1 - - 0.039 t - - 0.55 - - 0.021 t1 - - 1.42 - - 0.055 w 17.5 18.0 18.5 0.688 0.708 0.728 w1 5.5 6.0 6.5 0.216 0.236 0.255 this anachip version datasheet is replaced with diodes inc. datasheet ats137
single hall effect switch ats137 anachip corp. www.anachip.com.tw rev.1.2 mar. 29, 2006 9/9 atc ? package informat ion (continued) (3) package type: sot23-3l e e he d a2 a1 b(3x) a 2(4x) e1 2 1 3 1.45mm 0.8mm ( sensing point ) 1(4x) l view c l1 gauge plane c see view c m dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.05 - 1.35 0.041 - 0.053 a1 0.05 - 0.15 0.002 - 0.006 a2 1.00 1.10 1.20 0.039 0.043 0.047 b 0.25 - 0.50 0.010 - 0.020 c 0.08 - 0.20 0.003 - 0.008 d 2.70 2.90 3.00 0.106 0.114 0.118 e 1.50 1.60 1.70 0.059 0.063 0.067 he 2.60 2.80 3.00 0.102 0.110 0.118 l 0.30 - 0.60 0.012 - 0.024 l1 0.50 0.60 0.70 0.020 0.024 0.028 m 0.73 0.78 0.83 0.029 0.031 0.033 e 1.80 1.90 2.00 0.071 0.075 0.079 e1 0.85 0.95 1.05 0.033 0.037 0.041 0 o 5 o 10 o 0 o 5 o 10 o 1 3 o 5 o 7 o 3 o 5 o 7 o 2 6 o 8 o 10 o 6 o 8 o 10 o this anachip version datasheet is replaced with diodes inc. datasheet ats137
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