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s-5723a series www.sii-ic.com high-speed bipolar detection type hall ic ? seiko instruments inc., 2009-2010 rev.3.0 _00 seiko instruments inc. 1 the s-5723a series, developed by cmos technology, is a bipolar detection type hall ic with a high-sensitivity and high-speed detection. the output voltage changes when the s-5723a series detects t he intensity level of flux density and a polarity change. using the s-5723a series with a magnet makes it possible to detect rotation in various devices. high-density mounting is possible by using the small sot-23-3 package. ? features ? built-in chopping stabilized amplifier ? detection of bipolar magnetic fields ? applicable in various devices with wide range of option detection logic for magnetism : level ?l? at s pole detection, level ?h? at s pole detection output form : nch open drain output, cmos output ? wide power supply voltage range : 2.4 v to 5.5 v ? high-speed detection : operating cycle 132 s typ., 240 s max. ? operating temperature range : ? 40c to +85c small dependency magnetic char acteristics against temperature ? lead-free, sn 100%, halogen-free *1 *1. refer to ? ? product name structure ? for details. ? applications ? playthings, portable games ? home appliances ? package ? sot-23-3
high-speed bipolar de tection type hall ic s-5723a series rev.3.0 _00 seiko instruments inc. 2 ? block diagrams 1. nch open drain output product sleep/awake logic chopping stabilized amplifier out vdd vss *1 *1 *1. parasitic diode figure 1 2. cmos output product sleep/awake logic chopping stabilized amplifier out vdd vss *1 *1 *1 *1. parasitic diode figure 2
high-speed bipolar detection type hall ic rev.3.0 _00 s-5723a series seiko instruments inc. 3 ? product name structure 1. product name s-5723a x b x ? m3t1 x pole detection b : bipolar detection package abbreviation and ic packing specifications *1 m3t1 : sot-23-3, tape environmental code u : lead-free (sn 100%), halogen-free s : lead-free, halogen-free output form c : cmos output n : nch open drain output detection logic for magnetism h : level ?h? at s pole detection l : level ?l? at s pole detection *1. refer to the tape specificatio ns at the end of this book. 2. package drawing code package name package tape reel sot-23-3 mp003-c-p-sd mp003-c-c-sd mp003-z-r-sd 3. product name list table 1 output form pole detection detection logic for magnetism product name nch open drain output bipolar detection level ?l? at s pole detection s-5723anbl-m3t1y remark 1. please contact our sales office for products with specifications other than the above. 2. y: s or u 3. please select products of environmental code = u for sn 100%, halogen-free products.
high-speed bipolar de tection type hall ic s-5723a series rev.3.0 _00 seiko instruments inc. 4 ? pin configuration table 2 pin no. symbol pin description 1 vss gnd pin 2 vdd power supply pin 3 out output pin 1 2 3 sot-23-3 top view figure 3
high-speed bipolar detection type hall ic rev.3.0 _00 s-5723a series seiko instruments inc. 5 ? absolute maximum ratings table 3 (ta = 25 c unless otherwise specified) item symbol ab solute maximum rating unit power supply voltage v dd v ss ? 0.3 to v ss + 7.0 v nch open drain output v ss ? 0.3 to v ss + 7.0 v output voltage cmos output v out v ss ? 0.3 to v dd + 0.3 v power dissipation p d 430 *1 mw operating ambient temperature t opr ? 40 to +85 c storage temperature t stg ? 40 to +125 c *1. when mounted on board [mounted board] (1) board size : 114.3 mm 76.2 mm t1.6 mm (2) name : jedec standard51-7 caution the absolute maximum ratings are rated values exceeding which the product could suffer physical damage. these values must therefor e not be exceeded under any conditions. power dissipation (p d ) [mw] ambient temperature (ta) [ c] 0 50 100 150 0 400 600 200 figure 4 power dissipation of package (when mounted on board)
high-speed bipolar de tection type hall ic s-5723a series rev.3.0 _00 seiko instruments inc. 6 ? electrical characteristics table 4 (ta = 25 c, v dd = 3.0 v, v ss = 0 v unless otherwise specified) item symbol conditions min. typ. max. unit test circuit power supply voltage v dd ? 2.4 3.0 5.5 v ? average current consumption i dd average value ? 950 1200 a 1 output transistor nch, v out = 0.4 v 1 ? ? ma 2 output current i out cmos output output transistor pch, v out = v dd ? 0.4 v ? ? ? 1 ma 2 output leakage current i leak nch open drain output output transistor nch, v out = 5.5 v ? ? 1 a 2 awake mode time t aw ? ? 121 ? s ? sleep mode time t sl ? ? 11 ? s ? operating cycle t cycle t aw + t sl ? 132 240 s ? ? magnetic characteristics table 5 (ta = 25 c, v dd = 3.0 v, v ss = 0 v unless otherwise specified ) item symbol conditions min. typ. max. unit test circuit operating point *1 s pole b op ? 0.5 3.0 5.3 mt 3 release point *2 n pole b rp ? ? 5.3 ? 3.0 ? 0.5 mt 3 hysteresis width *3 b hys b hys = b op ? b rp ? 6.0 ? mt 3 *1. b op : operating point the operating point is the val ue of magnetic flux density when the detecti on logic for magnetism is ?l? when the s pole is detected, and when the output voltage (v out ) is inverted from ?h? to ?l? after the magnetic flux density applied to the s-5723a series by the magnet (s pole) is increased (by moving the magnet closer). v out retains the state until a magnetic fl ux density of the n pole higher than b rp is applied. *2. b rp : release point the release point is the value of magnetic flux density when the detection logi c for magnetism is ?l? when the s pole is detected, and when the output voltage (v out ) is inverted from ?l? to ?h? after the magnetic flux density applied to the s-5723a series by the magnet (n pole) is increased (by moving the magnet closer). v out retains the state until a magnetic fl ux density of the s pole higher than b op is applied. *3. b hys : hysteresis width b hys is the difference between b op and b rp . remark the unit of magnetic density mt can be conver ted by using the formula 1 mt = 10 gauss.
high-speed bipolar detection type hall ic rev.3.0 _00 s-5723a series seiko instruments inc. 7 ? test circuits 1. s-5723a series vdd vss out a r *1 *1. resistor (r) is unnecessary for the cmos output product. figure 5 2. s-5723a series vdd vss out a v figure 6 3. s-5723a series vdd vss out v r *1 *1. resistor (r) is unnecessary for the cmos output product. figure 7
high-speed bipolar de tection type hall ic s-5723a series rev.3.0 _00 seiko instruments inc. 8 ? standard circuit s-5723a series vdd vss out c in r *1 100 k 0.1 f *1. resistor (r) is unnecessary for the cmos output product. figure 8 caution the above connection diagram and constant will not guarantee successful operation. perform thorough evaluation using the actual application to set the constant.
high-speed bipolar detection type hall ic rev.3.0 _00 s-5723a series seiko instruments inc. 9 ? operation 1. direction of applied magnetic flux and position of hall sensor the s-5723a series detects the flux density wh ich is vertical to the marking surface. figure 9 shows the direction in which magnetic flux is being applied. marking surface s n figure 9 figure 10 shows the position of hall sensor. the center of this hall sensor is located in the area indi cated by a circle, which is in the center of a package as described below. the following also shows the distance (typ. value) between the marking surface and the chip surface of a package. 1 top view 2 3 center of hall sensor ( 0.3 mm or less) 0.7 mm (typ.) figure 10
high-speed bipolar de tection type hall ic s-5723a series rev.3.0 _00 seiko instruments inc. 10 2. basic operation the s-5723a series changes the output voltage (v out ) according to the level of the magnetic flux density (n or s pole) applied by a magnet. the following explains the operation when the magnetis m detection logic is ?l? when the s pole is detected. when the magnetic flux density of the s pole per pendicular to the marking surface exceeds b op after the s pole of a magnet is moved closer to the mark ing surface of the s-5723a series, v out changes from ?h? to ?l?. when the n pole of a magnet is moved closer to t he marking surface of the s-5723a series and the magnetic flux density of the n pole is higher than b rp , v out changes from ?l? to ?h?. while the magnetic field is not applied, v out retains the state. when the power is turned on, the output voltage (v out ) is ?h? or ?l?. definition of the magnetic field is performed every operating cycle indicated in ? ? electrical characteristics ?. figure 11 shows the relationship between the magnetic flux density and v out . (1) products level ?l? at s pole detection s pole n pole flux density (b) v out 0 b rp b op b hys h l (2) products level ?h? at s pole detection s pole n pole flux density (b) v out 0 b rp b op b hys h l figure 11
high-speed bipolar detection type hall ic rev.3.0 _00 s-5723a series seiko instruments inc. 11 ? precautions ? if the impedance of the power supply is high, the ic may malfunction due to a supply voltage drop caused by through-type current. take ca re with the pattern wiring to ensure that t he impedance of the power supply is low. ? note that the ic may malfunction if the power supply voltage rapidly changes. ? do not apply an electrostatic discharge to this ic that exceeds the performance ratings of the built-in electrostatic protection circuit. ? large stress on this ic may affect on the magnetic c haracteristics. avoid large stress which is caused by bend and distortion during mounting the ic on a board or handle after mounting. ? when designing for mass production using an application circuit described herein, the product deviation and temperature characteristics of the external parts shou ld be taken into consideration. sii shall not bear any responsibility for patent infringements related to products using the circuits described herein. ? sii claims no responsibility for any disputes arising ou t of or in connection with any infringement by products including this ic of patents owned by a third party.
high-speed bipolar de tection type hall ic s-5723a series rev.3.0 _00 seiko instruments inc. 12 ? marking specifications (1) to (3) : product code (refer to product name vs. product code .) (4) : lot number 1 2 3 (1) (2) (3) (4) sot-23-3 top view product name vs. product code product code product name (1) (2) (3) s-5723anbl-m3t1y t 5 d remark 1. please contact our sales office for products with specifications other than the above. 2. y: s or u 3. please select products of environmental code = u for sn 100%, halogen-free products.

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www.sii-ic.com ? the information described herein is subject to change without notice. ? seiko instruments inc. is not responsible for any pr oblems caused by circuits or diagrams described herein whose related industrial properties, patents, or ot her rights belong to third parties. the application circuit examples explain typical applications of the products, and do not guarant ee the success of any specific mass-production design. ? when the products described herein are regulated produ cts subject to the wassenaar arrangement or other agreements, they may not be exported without authoriz ation from the appropriate governmental authority. ? use of the information described he rein for other purposes and/or repr oduction or copying without the express permission of seiko instrum ents inc. is strictly prohibited. ? the products described herein cannot be used as par t of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of seiko instruments inc. ? although seiko instruments inc. exerts the greatest possible effort to ensure high quality and reliability, the failure or malfunction of semiconductor products may oc cur. the user of these products should therefore give thorough consideration to safety design, in cluding redundancy, fire-prevention measures, and malfunction prevention, to prevent any accident s, fires, or community damage that may ensue.

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