unisonic technologies co., ltd UH8104 cmos ic hall effect micro switch ic ? description the UH8104 is a low power, pole independent hall-effect switch with a latched digital output driver. it can work in 2.5v 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). it is designed with open drain configuration and connecting to a pull up resistor from output to v dd is necessary. ? features * micro power operation * 2.5v to 5.5v battery operation * offset canceling technology * independent of north or south pole magnet * superior temperature stability * extremely low switch-point drift ? ordering information ordering number pin assignment lead free halogen free package 1 2 3 packing UH8104l-ae3-r UH8104g-ae3-r sot-23 o i g tape reel UH8104l-g03-b UH8104g-g03-b sip-3 i g o tape box UH8104l-g03-k UH8104g-g03-k sip-3 i g o bulk note: pin assignment : o: v out , i: v dd , g: gnd (1) r: tape reel, b: tape box, k: bulk (2) ae3: sot-23, g03: sip-3 (3) l: lead free, g: halogen free UH8104l-ae3 -r (1) packing type (2) package type (3) halogen free ? marking www.unisonic.com.tw 1 of 5 copyright ? 2013 unisonic technologies co., ltd qw-r502.709, b
UH8104 cmos ic ? pin configurations ? pin description pin name pin type pin description v out o output pin v dd i power supply gnd g ground note: o: output, i: power supply, g: ground ? block diagram hall plate offset cancelling amp logic control v dd v out gnd switch unisonic technologies co., ltd 2 of 5 www.unisonic.com.tw qw-r502-709, b
UH8104 cmos ic unisonic technologies co., ltd 3 of 5 www.unisonic.com.tw qw-r502-709, b ? absolute maximum rating (t a =25c, unless otherwise specified.) parameter symbol ratings unit magnetic flux density b unlimited mt supply voltage v dd 7 v package power dissipation p d 230 mw junction temperature t j 150 operation temperature t opr -40 ~ +85 storage temperature t stg -65 ~ +150 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 conditions min typ max unit supply voltage v dd operating 2.5 5.5 v ? electrical characteristics (t a =25c, v dd =3v) parameter symbol conditions min typ max unit output low voltage v ol i sink = 1ma 20 40 mv output leakage current i off v out = 5.5v, b rpn UH8104 cmos ic ? typical application circuit 3 2 2 1 gnd v dd v out pull up resistor (50k is recommended) 2.5~5.5v digital output 0.1uf sot-23 2 1 3 gnd vdd v out digital output pull up resistor (50k is recommended) 2.5~5.5v 0.1uf sip-3 unisonic technologies co., ltd 4 of 5 www.unisonic.com.tw qw-r502-709, b
UH8104 cmos ic ? magnetic flux b b rps b ops 0 turn on turn off output off-state off-state on-state on-state turn on turn off b rpn b opn sot-23 / sip-3 unisonic technologies co., ltd 5 of 5 www.unisonic.com.tw qw-r502-709, b
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