unisonic technologies co., ltd UM21125 linear integrated circuit www.unisonic.com.tw 1 of 4 copyright ? 2011 unisonic technologies co., ltd qw-r105-038.e single-suppl y comparator ? description the utc UM21125 is a single-supply comparator. there is a 70mv v ref negative input inside. ? features * single-supply operation * low operating voltage: 2.7v~20v * low operating current: 1.3ma (typ.) ? ordering information ordering number package packing lead free halogen free UM21125l-af5-r UM21125g-af5-r sot-25 tape reel ? marking
UM21125 linear integrated circuit unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r105-038.e pin configuration 3 2 1 4 5 -input gnd v + output +input ? pin description pin no. pin name description 1 +input positive input of the comparator 2 gnd ground connection 3 -input negative input of the comparator (there is 70mv vref inside) 4 output the output of the comparator 5 v+ supply voltage ? block diagram 5 1 2 3 4 70mv vref output v+ +input -input gnd
UM21125 linear integrated circuit unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r105-038.e ? absolute maximum ratings (t a =25c, unless other specified) parameter symbol ratings unit supply voltage v + +20 v differential input voltage v i ( diff ) +20 v input voltage v in -0.3 ~ +20 (note 2) v power dissipation p d 200 mw junction temperature t j +125 c operating temperature t opr -40~ +85 c storage temperature t stg -40~+125 c notes: 1. 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. 2. when the supply voltage is less than +20v, the abs olute maximum input voltage is equal to the supply voltage. ? electrical characteristics (v + =5v,t a =25c, unless other specified) parameter symbol test conditions min typ max unit -input dc level v in - 63 68 73 mv maximum output voltage swings v om r l =2k ? 3.5 v operating current i cc v+=5v, r l = 1.3 1.75 ma v+=20v, r l = 1.6 2.35 ma output source current i source v in +=1v, v in -=70mv 20 30 ma output sink current i sink v in +=0v, v in -=70mv 8 20 ma
UM21125 linear integrated circuit unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r105-038.e ? typical charsacterist 45 50 55 60 65 70 75 80 85 90 95 100 01020 supply voltage, v cc (v) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2 4 6 8 12 14 16 18 22 01020 supply voltage, v cc (v) 2 4 6 8 12 14 16 18 22 reference voltage vs. supply voltage operating current vs. supply voltage 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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