The paper describes a single-stage operational transconductance amplifier suitable for very-low-voltage operation in power-constrained applications. The proposed circuit avoids the tail current generator in the differential pair while preventing pseudo-differential operation. Moreover, the adoption of positive feedback allows increasing the stage transconductance while minimizing the current consumption. Experimental measurements on prototypes implemented in a standard CMOS 180-nm technology, show superior performance as compared to the state of the art.

0.4-V, 81.3-nA Bulk-Driven Single-Stage CMOS OTA with Enhanced Transconductance

Ballo A.;Grasso A. D.
Primo
;
Pennisi S.
2022

Abstract

The paper describes a single-stage operational transconductance amplifier suitable for very-low-voltage operation in power-constrained applications. The proposed circuit avoids the tail current generator in the differential pair while preventing pseudo-differential operation. Moreover, the adoption of positive feedback allows increasing the stage transconductance while minimizing the current consumption. Experimental measurements on prototypes implemented in a standard CMOS 180-nm technology, show superior performance as compared to the state of the art.
bulk-driven transistors
low power
low voltage
OTA
positive feedback
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/538059
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