Title :
Wide common mode input range, gain tunable sense amplifier with system self-calibration
Author :
Zhu, Weili ; Poletto, Vanni ; Galllinari, Maurizio
Author_Institution :
Automotive Product Group, STMicroelectronics, Shanghai, China
Abstract :
This paper presents a technique to sense and amplify small differential signal with tunable gain from 10 to 100. This amplifier can work with wide common mode input voltage ranges from -7 V to 90 V. One offset cancellation block is introduced, in order to realize system self-calibration which is possible to reduce equivalent input offset voltage to less than 0.5 mV.
Keywords :
automotive electronics; calibration; circuit tuning; operational amplifiers; resistors; equivalent input offset voltage; gain tunable sense amplifier; matched resistors; motor control application; offset cancellation block; operational amplifiers; system self-calibration current sense amplifier; voltage -7 V to 90 V; wide common mode input voltage range; Automotive engineering; Calibration; Mirrors; Motor drives; Operational amplifiers; Resistors; Sensors;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-5797-7
DOI :
10.1109/ICSICT.2010.5667725
