data sheet bipolar hall-effect position sensors ah41 nov 2010 rev. 1. 2 bcd semiconductor manufacturing limited 1 general description the ah41 is an integrated hall-effect latched sensor designed for electronic commutation of brushless dc motor applications. the device includes an on-chip hall voltage generator for magnetic sensing, a comparator that amplifiers the hall voltage, and a schmitt to provide switching hysteresis for noise rejection and open-collector output. an internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. a north pole of sufficient strength will turn the output on. in the absence of a magnetic field, the output is off. this ic is available in to-92s-3 package. features ? on-chip hall sensor ? wide operating voltage range: 4v to 24v ? internal bandgap regulator for temperature compensation ? maximum output sink current: 50ma ? low profile to-92s-3 ? operating temperature: -40 ? c to 150 ? c ? esd rating: 2000v (human body model) 300v (machine model) application ? brushless dc motor figure 1. package type of ah41 to-92s-3
data sheet bipolar hall-effect position sensors ah41 nov 2010 rev. 1. 2 bcd semiconductor manufacturing limited 2 pin configuration z3 package (to-92s-3) figure 2. pin configuratio n of ah41 (front view) pin description pin number pin name function 1 vcc power supply pin 2 gnd ground pin 3 output output pin. it is low during the n magnetic field
data sheet bipolar hall-effect position sensors ah41 nov 2010 rev. 1. 2 bcd semiconductor manufacturing limited 3 functional block diagram figure 3. functional block diagram of ah41 ordering information ah41 - circuit type package z3: to-92s-3 package temperature range part nu mber marking id packing type AH41Z3-AG1 ah41 bulk to-92s-3 -40 to 150 c ah41z3-bg1 ah41 bulk bcd semiconductor's pb-free products, as designated with "g1" suffix in the part number, are rohs compliant and green. magnetic characteristics a: 30 to 75 gauss b: 5 to 105 gauss g1: green
data sheet bipolar hall-effect position sensors ah41 nov 2010 rev. 1. 2 bcd semiconductor manufacturing limited 4 absolute maximum ratings (note 1) parameter symbol value unit supply voltage v cc -24 to 28 v output off voltage v ce 30 v output sink current (continuous current) i out 50 ma power dissipation (t a =25 c) p d 400 mw storage temperature t stg -65 to 150 c junction temperature t j 150 c esd (machine model) 300 v esd (human body model) 2000 v note 1: stresses greater than those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ?recommended operating co nditions? is not implied. exposure to ?absolute maximum ratings? for extended periods may affect device reliability. recommended operating conditions (t a =25 c) parameter symbol min max unit supply voltage v cc 4 24 v operating temperature t op -40 150 c
data sheet bipolar hall-effect position sensors ah41 nov 2010 rev. 1. 2 bcd semiconductor manufacturing limited 5 high low b hys 0 s n turn off turn on magnetic flux density (gauss) b rp v out b op v sat electrical characteristics v cc =12v, t a =25c, unless otherwise specified. parameter symbol conditions min typ max unit supply voltage v cc 4 24 v supply current i cc v cc =4v to 24v 6 9 ma output leakage current i ol v ce =14v 0.1 10 a output saturation voltage v sat i out =20ma 110 300 mv rise time tr r l =820 ? c l =20pf 200 ns fall time tf r l =820 ? c l =20pf 100 ns magnetic characteristics (t a =25 c) parameter symbol grade min typ max unit a 30 75 operating point b op b 5 105 gauss a -75 -30 releasing point b rp b -105 -5 gauss hysteresis b hys 80 110 140 gauss
data sheet bipolar hall-effect position sensors ah41 nov 2010 rev. 1. 2 bcd semiconductor manufacturing limited 6 n s marking side gnd output vcc (front view) 1 2 3 ah41 v cc r l 820 ? 20pf c l v out test circuit figure 4. basic test circuit of ah41
data sheet bipolar hall-effect position sensors ah41 nov 2010 rev. 1. 2 bcd semiconductor manufacturing limited 7 03691215182124 0 1 2 3 4 5 6 7 supply current (ma) supply voltage(v) t a =25 o c -40 -20 0 20 40 60 80 100 120 140 0 2 4 6 8 10 supply current (ma) ambient temperature ( o c) v cc =12v -40-20 0 20406080100120140 -100 -50 0 50 100 150 200 b op /b rp /b hys (gauss) ambient temperature ( o c) b op b rp b hys typical performance characteristics figure 5. supply current vs. supply voltage figure 6. supply curr ent vs. ambient temperature figure 7. b op /b rp /b hys vs. supply voltage figure 8. b op /b rp /b hys vs. ambient temperature 4 8 12 16 20 24 -300 -200 -100 0 100 200 300 400 b op /b rp /b hys (gauss) supply voltage (v) b op b rp b hys
data sheet bipolar hall-effect position sensors ah41 nov 2010 rev. 1. 2 bcd semiconductor manufacturing limited 8 typical performance characteristics (continued) -40-20 0 20406080100120140 0 50 100 150 200 saturation voltage (v) ambient temperature ( o c) v cc =12v i out =10ma i out =20ma figure 9. saturation voltag e vs. ambient temperature
data sheet bipolar hall-effect position sensors ah41 nov 2010 rev. 1. 2 bcd semiconductor manufacturing limited 9 mechanical dimensions to-92s-3 unit: mm(inch)
important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing co., ltd. 800 yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd., shenzhen office unit a room 1203, skyworth bldg., gaoxin ave.1.s., nanshan district, shenzhen, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corp. 30920 huntwood ave. hayward, ca 94544, usa tel : +1-510-324-2988 fax: +1-510-324-2788 - headquarters bcd semiconductor manufacturing limited no. 1600, zi xing road, shanghai zizhu sc ience-based industrial park, 200241, china tel: +86-21-24162266, fax: +86-21-24162277 bcd semiconductor manufacturing limited important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing limited 800, yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 bcd semiconductor manufacturing limited main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd. shenzhen office advanced analog circuits (shanghai) corporation shenzhen office room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corporation 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - ic design group advanced analog circuits (shanghai) corporation 8f, zone b, 900, yi shan road, shanghai 200233, china tel: +86-21-6495 9539, fax: +86-21-6485 9673 bcd semiconductor manufacturing limited http://www.bcdsemi.com bcd semiconductor manufacturing limited
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