20.500.12556/RUL-136094 Evaluating common-mode voltage based trade-offs in differential-ended and single-supplied signal conditioning amplifiers This paper focuses on a differential voltage measurement in low-voltage automotive devices whose subunits are separated with a low-side safety switch. In contrast to conventional applications with high-side switches, a common-mode voltage (CMV) with negative polarity exists at the input of the signal conditioning circuitry. To overcome the shortage of dedicated integrated circuits capable of withstanding negative CMV, the paper investigates single- and two-stage differential circuits with single-supplied operational amplifiers to find a cost-optimized counterpart. In addition, the proposed procedure tunes the circuit parameters in such a manner to obtain the largest possible full-scale range at the output. Though, such optimization results in very uncommon values for gain and reference voltages. This issue is additionally evaluated for reference voltages that are either cost-effective or more easily accessible to increase the circuit feasibility. Since the impact of resistances on circuits’ behaviour could be diminished to a great extent using high-precision and matched pair resistors, the sensitivity analysis was investigated only for a reference voltage change. Furthermore, a reversed termination of measured voltages results in a simplified reference voltage selection without hindering circuits’ performance, proven by simulation and experimental results. voltage measurements common-mode voltage operational amplifiers differential-ended signal conditioning high-power devices low-side switch merjenje napetosti sofazna napetost operacijski ojačevalniki diferenčna prilagoditev signala močnostni pretvorniki true false true Angleški jezik Slovenski jezik Članek v reviji 2022-04-12 13:59:49 2022-04-12 13:59:51 2022-09-15 04:13:23 0000-00-00 00:00:00 2021 0 0 18 str. iss. 16, art. 1982 Vol. 10 Aug. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.31 2079-9292 10.3390/electronics10161982 74170883 RAZ_Petkovsek_Marko_2021.pdf RAZ_Petkovsek_Marko_2021.pdf 1 AC2B53FE9EAC083044964D851EF859F5 081b08abaf19b27ac57e18a0fefdf00717cf63bd5468a2a83d90726edfe0d0fb 48a2a249-ba58-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155556 https://www.mdpi.com/2079-9292/10/16/1982 1 023428d4-ba58-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155555 Fakulteta za elektrotehniko 0 0 0