unisonic technologies co., ltd uh8105 cmos ic www.unisonic.com.tw 1 of 5 copyright ? 2013 unisonic technologies co., ltd qw-r502-874.d hall effect micro switch ic ? description the uh8105 is a low power, pole independent hall-effect switch with a latched digital output driver. it can work in 2.5 volt supply. either a north or south pole of suffi cient flux will turn the output on; in the absence of a magnetic field, the output is off. when a magnetic field enters t he hall element and exceeds the operate point b ops (or less than b opn ) the output turns on (output is low). when the magnetic field is below the release point b rps (or above b rpn ), the output turns off (output is high). ? features *micropower operation *2.5v to 5.0v battery operation *offset canceling technology *independent of north or south pole magnet, *superior temperature stability *extremely low switch-point drift ? applications *micro switch *handheld wireless application wake up switch *clamp shell type application switch *magnet switch in low duty cycle applications ? ordering information ordering number package pin assignment packing lead free halogen free 1 2 3 uh8105l-ae3-r UH8105G-AE3-R sot-23 o i g tape reel uh8105l-g03-b uh8105g-g03-b sip-3 i g o tape box uh8105l-g03-k uh8105g-g03-k sip-3 i g o bulk note: pin assignment : o: output, i: v dd , g: gnd ? marking
uh8105 cmos ic unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r502-874.d ? pin configurations sot-23 sip-3 ? pin description pin name type description output o output v dd p/i power supply input gnd p ground note: p: power supply, i: input, o: output ? block diagram offset cancelling amp logic control
uh8105 cmos ic unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r502-874.d ? absolute maximum rating (t a =25c) parameter symbol ratings unit magnetic flux density b unlimited mt supply voltage v dd 5.5 v output current i o 1 ma power dissipation sip-3 p d 400 mw sot-23 200 mw maximum junction temp t j 150 c operation temperature t opr -40 ~ +85 c storage temperature t stg -65 ~ +150 c note: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? recommended operating conditions ( t a =25c ) parameter symbol condit ions min typ max unit supply voltage v dd operating 2.5 - 5.5 v ambient temperature t a -40 85 c ? electrical characteristics (t a =25c, v dd =3v) parameter symbol conditions min typ max unit supply voltage range v dd operating 2.5 5.5 v supply current i dd average 5 10 ua awake 1.2 2 ma sleep 2 8 ua output leakage current i off vout = 5.5v, b rpn |