Work

Tunable Voltage Reference circuit in a standard 65nm CMOS technology

Year: 2025

Type: article

Abstract: This paper presents tunable voltage reference (TVR) designed in a standard general purpose 65nm CMOS technology. Designed circuit is based on two-transistor (2T) voltage reference (VR) with digitally controlled operational amplifier (OPAMP). Developed TVR provides stable output voltage from 0.38 V to 1.1 V with non-linear tuning step under 0.5% of the output voltage (from 1.9 mV to 2.9 mV). The supply voltage in the range from 0.91 V to 1.5 V is used. The circuit offers parameter PSRR = -53.59 dB (at 1 kHz) and line regulation (LNR) of 0.35% in the worst case. The required area is 0.0185 mm2 . The proposed TVR was used to precise frequency tuning of oscillator. Provided results are obtained from both simulations and measurement of the manufactured ASIC prototype.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.15165829

Authors: Ondica, Róbert, Maljar, David, Potocny, Miroslav, Arbet, Daniel, Stopjakova, Viera

Institution: Slovak University of Technology in Bratislava

Language: English

Topic: Analog and Mixed-Signal Circuit Design

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: Agentúra na Podporu Výskumu a Vývoja, Vedecká Grantová Agentúra MŠVVaŠ SR a SAV

Awards: Implementácia monolitického systému meniča napätia pre alternatívne zdroje energie v CMOS technológii, G8088548421