Voltage clamping circuit with ±100 mV precision in high‐voltage OTA. Issue 11 (1st May 2016)

• Record Type: Journal Article
• Authors: Easwaran, S.N.; Venugopal, S.K.; Weigel, R.
• Is Part Of: Electronics letters. Volume 52:Issue 11(2016)
• Page Start: 921
• Page End: 923
• Publication Date: 2016-05-01
• Subjects: operational amplifiers -- bipolar integrated circuits -- CMOS integrated circuits -- integrated circuit manufacture; voltage clamping circuit -- OTA -- operational transconductance amplifier -- bipolar CMOS -- voltage 100 mV -- voltage 40 V -- voltage 5.4 V -- temperature 175 C -- voltage 25 V; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2016.0571
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : 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.