46-nA High-PSR CMOS Buffered Voltage Reference With 1.2–5 V and −40 ◦C to 125 ◦C Operating Range
Year: 2024
Type: article
Abstract: A nanopower, buffered CMOS voltage reference designed to operate across the entire industrial temperature range (from$- 40~^{\circ }$C to$125~^{\circ }$C) and with an input voltage range from 1.2 to 5 V (automotive applications) is presented. The solution provides 390 mV at$20~^{\circ }$C and is implemented in a standard BCD technology featuring 160-nm CMOS devices. It is characterized by an average temperature coefficient of 200 ppm/°C, a line sensitivity (LS) of 0.138%/V, and a power supply rejection of −83 dB at 100 Hz. In addition, the circuit occupies a die area of 0.146 mm2 (with the reference circuit alone covering 0.043 mm2) and maintains a highly stable current consumption of around 45 nA across various process and input voltage conditions (25 nA for the reference circuit alone) while providing a maximum output current of$630~\mu $A with a load regulation of 0.016 mV/$\mu $A.
Authors: Chiara Venezia, Andrea Ballo, Alfio Dario Grasso, Alessandro Rizzo, Calogero Ribellino, Salvatore Pennisi
Institutions: University of Catania, STMicroelectronics (Italy)
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,495
OpenAlex ID: W4402569739