Open AccessVoltage clamping circuit with ±100 mV precision in high‐voltage OTA
Author(s) -
Easwaran S.N.,
Venugopal S.K.,
Weigel R.
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2016.0571
Subject(s) - voltage , electrical engineering , dropout voltage , voltage divider , clamping , voltage regulator , materials science , electronic engineering , computer science , engineering , mechanical engineering
It is shown that precise output voltage clamping levels can be achieved under any operating condition by clamping the input of operational transconductance amplifier to a process insensitive reference and multiplexing the levels based on comparator decision. This circuit was implemented in a 40 V bipolar CMOS process. The fabricated circuit clamps the output voltage at 5.4 V with a precision of ±100 mV at 175 ° C on‐chip junction temperature on the die. The input range for this circuit is between 100 mV and 25 V.