wsh130nl winson reserves theright tomake changesto improve reliability or manufacturability. operates from 2.4v to 26v supply voltage with reverse voltage protection operates with magnetic fields from dc to 15khz on-chip hall sensor on-chip temperature compensation circuitry minimizes shifts in on and off points and hysteresis over temperature and supply voltage ideal sensor for speed measurement, revolution counting, positioning, and dc brushless motors on (l) with magnetic south pole and off(h) without magnetic field or with magnetic north pole functional description : wsh130nl is designed to integrate hall sensor with output driver together on the same chip, it is suitable for speed measurement, revolution counting, positioning. it includes a temperature compensated voltage regulator, a differential amplifier, a hysteresis controller and a open-collector output driver capable of sinking up to 20ma current load. an on-chip protection resistor is implemented to prevent reverse power fault. the temperature-dependent bias increases the supply voltage of the hall plates and adjusts the switching points to the decreasing induction of magnets at higher temperatures. subsequently, the open collector output switches to the appropriate state. wsh130nl are rated for operation over temperature range from C 40 ? c to 125 ? c and voltage ranges from 2.4v to 26v. name p/i/o pin# description vdd p positive power supply gnd o ground vout o output pin supplyvoltage vcc -------------------------- 26v outputbreakdownvoltage vout (breakdown) ---------------- 30v ? winson, 2005/11/18
wsh130nl winson reserves theright tomake changesto improve reliability or manufacturability. magnetic flux density b -------------------------- unlimited reverse protection voltage vr -------------------------- 26v output on current (continuous) ic -------------------------- 25ma operating temperaturerange ta -------------------------- (-40 ? c to +125 ? c) storage temperaturerange ts -------------------------- (-65 ? c to +150 ? c) package power dissipation pd-------------------------- 500mw (t=+25 ? c,vcc=2.4v to 26v) characteristic symboltestconditions min typmaxunits supply voltage vcc v output saturation voltage vout (sat) vcc=12v,ic=10ma b > bop v output leakage current ileakagevcc=12v,b wsh130nl winson reserves theright tomake changesto improve reliability or manufacturability. characteristic symbolgrade min. typ. max. unit operating point bop a +50 guass b +70 guass c +150 release point brp a +10 guass b +10 guass c +10 guass hysteresis window bhys 10 30 guass ? winson, 2005/11/18
wsh130nl winson reserves theright tomake changesto improve reliability or manufacturability. ? winson, 2005/11/18
wsh130nl winson reserves theright tomake changesto improve reliability or manufacturability. magnetic detector: ? winson, 2005/11/18
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