linear hall-effect ic ah49e data sheet 1 aug. 2010 rev. 1. 3 bcd semiconductor manufacturing limited general description the ah49e is a small, ve rsatile linear hall-effect device that is operated by the magnetic field from a permanent magnet or an electromagnet. the output voltage is set by the supply voltage and varies in pro- portion to the strength of the magnetic field. the integrated circuitry features low noise output, which makes it unnecessary to use external filtering. it also includes precision re sistors to provide increased temperature stability and accuracy. the operating tem- perature range of these linear hall sensors is -40 o c to 85 o c , appropriate for comm ercial, consumer and industrial applications. the ah49e is available in standard to-92s and sot- 23-3 packages. features miniature construction power consumption of 3.5ma at v cc =5v for energy efficiency single current sourcing output linear output for circuit design flexibility low noise output virtua lly eliminates the need for filtering a stable and accurate output temperature range of -40 o c to 85 o c responds to either positive or negative gauss applications current sensing motor control position sensing magnetic code reading ferrous metal detector vibration sensing liquid level sensing weight sensing figure 1. package types of ah49e to-92s sot-23-3
linear hall-effect ic ah49e data sheet 2 aug. 2010 rev. 1. 3 bcd semiconductor manufacturing limited figure 2. pin configuration of ah49e pin configuration pin description pin number pin name function to-92s sot-23-3 1 1 vcc supply voltage 2 3 gnd ground pin 3 2 out output (to-92s ) vcc gnd out z3 package 1 2 3 (front view) (sot-23-3 ) n package 3 2 1 (top view) gnd vcc out
linear hall-effect ic ah49e data sheet 3 aug. 2010 rev. 1. 3 bcd semiconductor manufacturing limited functional block diagram figure 3. functional block diagram of ah49e gnd out package temperature range part number marking id packing type lead free green lead free green to-92s -40 to 85 o c AH49EZ3-E1 ah49ez3-g1 ah49e ah49g bulk sot-23-3 ah49entr-g1 gj1 tape & reel circuit type packages z3: to-92s e1: lead free ah49e - blank: bulk ordering information vcc hall sensor amplifier 3 (2) 1 (1) 2 (3) 65 a typ. bcd semiconductor's pb-free products, as designated with "e1" suffix in th e part number, are rohs compliant. products with "g1" suffix are available in green package. g1: green a (b) a for to-92s b for sot-23-3 n: sot-23-3 tr: tape and reel
linear hall-effect ic ah49e data sheet 4 aug. 2010 rev. 1. 3 bcd semiconductor manufacturing limited parameter symbol value unit supply voltage v cc 8v output current i o 10 ma operating temperature t a -40 to 100 o c storage temperature range t stg -50 to 150 o c esd (human body model) 3000 v note 1: stresses greater than those listed under "absolute maximum ratings" may cause permanent damage to the device. these are stress ratings only, a nd functional operation of the device at th ese or any other cond itions beyond those ind i- cated under "recommended operat ing conditions" is not implied. exposure to "absolute maximum ratings" for extended periods may affect device reliability. parameter symbol min max unit supply voltage v cc 3.0 6.5 v operating temperature t op -40 85 o c recommended operating conditions absolute maximum ratings (note 1)
5 aug. 2010 rev. 1. 3 bcd semiconductor manufacturing limited linear hall-effect ic ah49e data sheet (v cc =5v, t a =25 o c, unless otherwise specified.) parameter symbol conditions min typ max unit supply current i cc 3.5 4.5 ma quiescent output voltage v null @ b=0gs 2.25 2.5 2.75 v output voltage sensitivity b=0gs to 1000gs 1.1 1.6 2.1 mv/gs output voltage span v os 1.0 to (v cc -1.0) 0.8 to (v cc -0.8) v output resistor r o 60 120 ? magnetic field range b 650 1000 gs linearity of span 0.7 % output noise bw=10hz to 10khz 90 v electrical characteristics
linear hall-effect ic ah49e data sheet 6 aug. 2010 rev. 1. 3 bcd semiconductor manufacturing limited transfer characteristics (v cc =5v) when there is no outside magnetic field (b=0gs), the quiescent output voltage is one-half the supply voltage in general. for to-92s package, if a south magnetic pole approches to the front face (t he side with marking id) of the hall effect sensor, the circuit will drive the output voltage higher. contrary, a north magnetic pole will drive the output voltage lower. the variations of voltage level up or down are symmetrical. due to sot-23-3 is reversed packaging with to-92s, so the magnetic performance is also reversed. therefor, if the reversed magnetic pole approches to the front face (the side with marking id), the output is the same as to-92s package. . greatest magnetic sensitivity is obtained with a supply voltage of 6v, but at the cost of increased supply current and a slight loss of output symmetry. so, it is not recommended to work in such condition unless the output voltage magnitude is a main issue. the output signal can be capacitively co upled to an amplifier for boosting further if the changing frequency of the magnetic field is high. 1000 -1000 500 -500 0 1.0 v 2.5 v 4.0 v typical output voltage v b (gauss) figure 4. the transfer characteristics of ah49e south pole north pole to-92s package sot-23-3 package
7 aug. 2010 rev. 1. 3 bcd semiconductor manufacturing limited linear hall-effect ic ah49e data sheet typical performance characteristics figure 7. output voltage vs. ambient temperature figure 5. output voltage vs. magnetic field figure 6. output voltage vs. supply voltage -1000 -500 0 500 1000 0 1 2 3 4 5 v cc =5v no load v out (v) b(gs) 2345678 0 1 2 3 4 5 b=0gs no load v out (v) v cc (v) -40 0 40 80 120 0 1 2 3 4 5 v cc =5v b=0gs no load v out (v) t a ( o c)
linear hall-effect ic ah49e data sheet 8 aug. 2010 rev. 1. 3 bcd semiconductor manufacturing limited mechanical dimensions to-92s unit: mm(inch) 1.480(0.058) 1.680(0.066) 0.710(0.028) 0.810(0.032) 3.080(0.121) 3.280(0.129) 2.200(0.087) 2.400(0.094) 0.440(0.017) typ 13.500(0.531) 14.500(0.571) 0.380(0.015) typ 1.270(0.050) typ 44 46 4.000(0.157) 4.200(0.165) 1.350(0.053) 1.050(0.041) 2.200(0.087) 1.900(0.075) package sensor location
9 aug. 2010 rev. 1. 3 bcd semiconductor manufacturing limited linear hall-effect ic ah49e data sheet mechanical dimens ions (continued) sot-23-3 unit: mm(inch) 2.820(0.111) 3.020(0.119) 2.650(0.104) 2.950(0.116) 0.950(0.037) typ 0.300(0.012) 0.500(0.020) 1.500(0.059) 1.700(0.067) 1.800(0.071) 2.000(0.079) 0.300(0.012) 0.600(0.024) 0.100(0.004) 0.200(0.008) 0.000(0.000) 0.150(0.006) 0.900(0.035) 1.300(0.051) 1.450(0.057) max. 0.200(0.008) 0 8 0.685(0.027) 0.985(0.039) 1.300(0.051) 1.600(0.063) (for hall ic) package sensor location
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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