A NOVEL-APPROACH TO THE CALCULATION OF NONLINEAR HARMONIC DISTORTION COEFFICIENTS IN BJT DIFFERENTIAL-AMPLIFIERS


CICEKOGLU O., KUNTMAN H.

MICROELECTRONICS JOURNAL, cilt.25, ss.293-299, 1994 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 25 Konu: 4
  • Basım Tarihi: 1994
  • Doi Numarası: 10.1016/0026-2692(94)90179-1
  • Dergi Adı: MICROELECTRONICS JOURNAL
  • Sayfa Sayıları: ss.293-299

Özet

The base-driven BJT differential pair is analysed, taking the Early effect into consideration and using a different model. Harmonic distortion coefficients are calculated and an accurate analytical expression representing the total harmonic distortion is proposed. It is shown that this expression leads to a minimum point in total harmonic distortion which cannot be obtained with the SPICE modified Gummel-Poon model that underestimates the contribution of the Early effect, and therefore accurate simulation by SPICE is not possible.