unisonic technologies co., ltd UH8102 cmos ic www.unisonic.com.tw 1 of 7 copyright ? 2011 unisonic technologies co., ltd qw-r502-414.c low power hall effect switch ? description UH8102 is a low-power integrated hall switch designed to sense the applied magnetic flux density and give a digital output, which indicates the present condi tion of the magnitude sensed. it mainly designed for battery-powered system and hand-held equipment, such as cellular flip-phones and pda?s, in which power consumption is one major concern. the typical power consumption of uh8100 at down to 10uw in 2.7v supply. for UH8102a , the output will be at the ?low? level when no magnetic field is applied. when the applied magnetic flux density is stronger than the switching thre shold, the output would be at the ?high? level. for UH8102b , the output will be at the ?high? level when no magnetic field is applied. when the applied magnetic flux density is stronger than the switching thre shold, the output would be at the ?low? level. ? features *micropower operation *2.4v to 5.5v battery operation *offset canceling technology *superior temperature stability *extremely low switch-point drift *insensitive to physical stress sot-23 1 2 3 ? ordering information ordering number pin assignment lead free halogen free package 1 2 3 packing UH8102al-ae3-r UH8102ag-ae3-r sot-23 o i g tape reel UH8102bl-ae3-r UH8102bg-ae3-r sot-23 o i g tape reel note: o: output, i: v dd , g: gnd UH8102x g -ae3 -r (1) packing type (2) package type (3) halogen free (1) r:tape reel (2) ae3:sot-23 (3) l: lead free, g:halogen free (4) magnetic perform (4) a: low (4) b: high
UH8102 cmos ic unisonic technologies co., ltd 2 of 7 www.unisonic.com.tw qw-r502-414.c ? marking information ? pin configuration ? pin description pin name pin type pin description v out o digital output v dd p power supply gnd g ground note: o=output, p=po wer supply, g=ground
UH8102 cmos ic unisonic technologies co., ltd 3 of 7 www.unisonic.com.tw qw-r502-414.c ? block diagram hall plate v dd gnd v out
UH8102 cmos ic unisonic technologies co., ltd 4 of 7 www.unisonic.com.tw qw-r502-414.c ? absolute maximum rating parameter symbol ratings unit magnetic flux density b unlimited mt supply voltage v dd 5.5 v supply current i q -1 ~ +2.5 ma junction temperature t j 150 c operation temperature t opr -40 ~ +85 c storage temperature t stg -40 ~ +150 c note: absolute maximum ratings are those values be yond 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 =25 c ) parameter symbol conditions min typ max unit supply voltage v dd operating 2.4 2.7 5.5 v output voltage v out -0.3 2.7 5.5 v ambient temperature t a -40 25 85 c ? electrical characteristics (t a =25 c) parameter symbol conditions min typ max unit output saturation voltage v sat 0.1 v output leakage current i off v dd =2.7v 0.01 ua i dd(en) 1.1 ma i dd(dis) chip enable 2.5 ua supply current i dd(avg) v dd =2.7v 3 20 ua operating time t op 60 us standby time t sd 150 ms duty cycle d.c. v dd =2.7v 0.04 % ? magnetic characteristics ( t a =25c,v dd =2.7v) for UH8102a ( low level when no magnetic field is applied) rank 1 parameter symbol min typ max unit operation points |b op | 7 15 25 release points |b rp | 15 25 35 hysteresis |b op ?b rp | 5 10 15 gauss rank 2 parameter symbol min typ max unit operation points |b op | 7 50 release points |b rp | 15 70 hysteresis |b op ?b rp | 5 50 gauss for UH8102b ( high level when no magnetic field is applied) rank 1 parameter symbol min typ max unit operation points |b op | 15 25 35 release points |b rp | 7 15 25 hysteresis |b op ?b rp | 5 10 15 gauss rank 2 parameter symbol min typ max unit operation points |b op | 15 70 release points |b rp | 7 50 hysteresis |b op ?b rp | 5 50 gauss
UH8102 cmos ic unisonic technologies co., ltd 5 of 7 www.unisonic.com.tw qw-r502-414.c ? typical application circuit
UH8102 cmos ic unisonic technologies co., ltd 6 of 7 www.unisonic.com.tw qw-r502-414.c ? magnetic flux b v q b opn b rpn v ol b rps b ops 0 turn off v oh turn on UH8102a ( low level when no magnetic field is applied) UH8102b ( high level when no magnetic field is applied)
UH8102 cmos ic unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r502-414.c 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.
|
