Voltage clamping circuit with ±100 mV precision in high-voltage OTA

Voltage clamping circuit with ±100 mV precision in high-voltage OTA

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 bi...

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Bibliographische Detailangaben
Veröffentlicht in:Electronics letters 2016-05, Vol.52 (11), p.921-923
Hauptverfasser: Easwaran, S.N, Venugopal, S.K, Weigel, R
Format: Artikel
Sprache:eng
Schlagworte:
bipolar CMOS
bipolar integrated circuits
Circuits
Circuits and systems
Clamping
Clamping circuits
CMOS
CMOS integrated circuits
Electric potential
integrated circuit manufacture
Multiplexing
Operational amplifiers
operational transconductance amplifier
OTA
temperature 175 C
Voltage
voltage 100 mV
voltage 25 V
voltage 40 V
voltage 5.4 V
voltage clamping circuit
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Beschreibung
Zusammenfassung: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.
ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2016.0571