Current-mode circuits for sigma-delta converters

Yapar U., DÜNDAR G.

European Conference on Circuit Theory and Design 2007, ECCTD 2007, Sevilla, İspanya, 26 - 30 Ağustos 2007, ss.448-451, (Tam Metin Bildiri) identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/ecctd.2007.4529629
  • Basıldığı Şehir: Sevilla
  • Basıldığı Ülke: İspanya
  • Sayfa Sayıları: ss.448-451
  • Boğaziçi Üniversitesi Adresli: Evet

Özet

This paper presents the design of current-mode blocks to be used in modulator and decimator parts of continuous-time sigma-delta converters. Main blocks of sigma delta converters such as integrator and quantizer have been designed in current-mode. Through current-mode design, quantizer outputs are currents so that there is no need to use a voltage input/current output digital/analog converter in the feedback loop. Moreover, current-mode full-adder and delay elements have been designed which are main components of digital filters. Also a first-order modulator has been implemented and simulated. © 2007 IEEE.