A. Pretelli

Publications (3)1.18 Total impact

• Article: Reduction of EMI Susceptibility in CMOS Bandgap Reference Circuits

  A. Pretelli, A. Richelli, L. Colalongo, Z.M. Kovacs-Vajna
  [show abstract] [hide abstract]
  ABSTRACT: This paper presents a successful approach to increase the electromagnetic interference (EMI) immunity of CMOS bandgap reference circuits. Layout techniques along with some changes in the reference schematics lead to a robust electromagnetic immunity, preserving good overall performances. Measurement results confirm the low susceptibility of the proposed circuits. They exhibit only a few millivolts shift, for interfering signals of 1 Vpp in the frequency range of 1 MHz to 4 GHz, compared to the classical topologies that may reach more than 1 V. The circuits were fabricated in a 0.8-mum standard CMOS technology
  IEEE Transactions on Electromagnetic Compatibility 12/2006; · 1.18 Impact Factor
• Conference Proceeding: Robust design of bandgap voltage references with low EMI susceptibility

  A. Pretelli, A. Richelli, L. Colalongo, Z. Kovacs-Vajna
  [show abstract] [hide abstract]
  ABSTRACT: This paper addresses an approach to design bandgap voltage references which provides a good trade-off between overall performances and strong immunity to electromagnetic interferences. We investigated two classical topologies of bandgap references. The first circuit exhibits a 1200mV shift for interfering signals in the frequency range of 1MHz-4GHz, while the shift in the modified version of the same architecture is only 6mV. The second circuit exhibits a 300mV shift in the same frequency range while the shift in its modified version is only 20 mV.
  Electromagnetic Compatibility, 2003 IEEE International Symposium on; 09/2003
• Conference Proceeding: Increasing the immunity to electromagnetic interferences in a bandgap voltage reference

  A. Pretelli, A. Richelli, L. Colalongo, Z.M. Kovacs-Vajna
  [show abstract] [hide abstract]
  ABSTRACT: In this paper a bandgap reference cell with low susceptibility to electromagnetic interferences is presented. The circuit, based on a classical architecture, is modified by using a symmetrical topology amplifier in the output stage leading to a robust electromagnetic immunity, still preserving good performances in the overall bandgap circuit. Results of the simulations, carried out on the circuit extracted from the layout, are reported and compared to a classical bandgap topology. The reference circuit exhibits a 1200 mV shift for interfering signals in the frequency range of 1 MHz-4 GHz, while the shift in the modified version of the same architecture is only 6 mV in the same frequency range.
  Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on; 06/2003