unisonic technologies co., ltd uh8105 cmos ic www.unisonic.com.tw 1 of 5 copyright ? 2015 unisonic technologies co., ltd qw-r502-874.e 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 sufficient flux will turn the output on; in the absence of a m agnetic field, the output is off. when a magnetic field enters the 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 1 2 3 uh8105g-ae3-r sot-23 o i g tape reel UH8105G-G03-B sip-3 i g o tape box uh8105g-g03-k sip-3 i g o bulk note: pin assignment : o: output i: v dd g: gnd ? marking sot-23 sip-3
uh8105 cmos ic unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r502-874.e ? 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.e ? 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 uh8105 cmos ic unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r502-874.e ? typical circuit sip-3 3 2 2 1 gnd v dd v out 2.5~5.5v digital output 0.1uf sot-23
uh8105 cmos ic unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r502-874.e ? magnetic flux b b ops 0 turn on turn off output output voltage off-state off-state on-state on-state turn on turn off b rps b rpn b opn sot-23 / sip-3 utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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