Reverse bandgaps generate PVT-independent reference voltages by means of the sums of pairs of currents over individual matched resistors: one (CTAT) current is proportional to VEB; the other one (PTAT) is proportional to VT (Thermal voltage). Design guidelines and techniques for a CMOS low-power reverse bandgap reference are presented and discussed in this paper. The paper explains firstly how to design the components of the bandgap branches to minimize circuit current. Secondly, error amplifier topologies are studied in order to reveal the best one, depending on the operation conditions. Finally, a low-voltage bandgap in 65 nm CMOS with 5 ppm/°C, with a DC PSR of −91 dB, with power consumption of 5.2 μW and with an area of 0.0352 mm2 developed with these techniques is presented.

Barteselli, E., Sant, L., Gaggl, R., Baschirotto, A. (2021). Design Techniques for Low-Power and Low-Voltage Bandgaps. ELECTRICITY, 2(3), 271-284 [10.3390/electricity2030016].

Design Techniques for Low-Power and Low-Voltage Bandgaps

Barteselli, Edoardo
Primo
;
Sant, Luca
Secondo
;
Baschirotto, Andrea
Ultimo
2021

Abstract

Reverse bandgaps generate PVT-independent reference voltages by means of the sums of pairs of currents over individual matched resistors: one (CTAT) current is proportional to VEB; the other one (PTAT) is proportional to VT (Thermal voltage). Design guidelines and techniques for a CMOS low-power reverse bandgap reference are presented and discussed in this paper. The paper explains firstly how to design the components of the bandgap branches to minimize circuit current. Secondly, error amplifier topologies are studied in order to reveal the best one, depending on the operation conditions. Finally, a low-voltage bandgap in 65 nm CMOS with 5 ppm/°C, with a DC PSR of −91 dB, with power consumption of 5.2 μW and with an area of 0.0352 mm2 developed with these techniques is presented.
Articolo in rivista - Articolo scientifico
65 nm CMOS; bandgap; current-mode; low-current; low-power; low-voltage; reverse bandgap; trimming; voltage reference;
English
26-lug-2021
2021
2
3
271
284
open
Barteselli, E., Sant, L., Gaggl, R., Baschirotto, A. (2021). Design Techniques for Low-Power and Low-Voltage Bandgaps. ELECTRICITY, 2(3), 271-284 [10.3390/electricity2030016].
File in questo prodotto:
File Dimensione Formato  
paper_electricity_barteselli.pdf

accesso aperto

Descrizione: Articolo principale
Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Dimensione 1.08 MB
Formato Adobe PDF
1.08 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/324851
Citazioni
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 3
Social impact