"The CMOS inverter" as a comparator in ADC designs

Tangel A., Choi K.

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, cilt.39, ss.147-155, 2004 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 39
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1023/b:alog.0000024062.35941.23
  • Dergi Adı: ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.147-155
  • Anahtar Kelimeler: TIQ, flash ADC, CMOS inverter, high speed ADCs, A/D CONVERTER, M-SAMPLE/S, 10-B
  • Kocaeli Üniversitesi Adresli: Evet

Özet

This paper introduces a single-ended non-offset-cancelled flash ADC architecture, the "Threshold Inverter Quantizer" (TIQ). The TIQ is based on a CMOS inverter cell, in which the voltage transfer characteristics (VTC) are changed by systematic transistor sizing. As a result, a significant improvement of speed and reduction of area and power consumption is achieved. A sample TIQ based flash ADC chip including 3-bit, 4-bit and 6-bit versions together has been designed and fabricated with the 2 mu standard CMOS n-well technology. The proposed ADC cells are suitable for System-on-Chip (SoC) applications in high speed wireless products.