Voltage- and current-controlled high CMRR instrumentation amplifier using CMOS current conveyors


ERCAN H. , TEKİN S. A. , ALÇI M.

TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES, cilt.20, ss.547-556, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 20 Konu: 4
  • Basım Tarihi: 2012
  • Doi Numarası: 10.3906/elk-1011-939
  • Dergi Adı: TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES
  • Sayfa Sayıları: ss.547-556

Özet

A new approach to the design of an in instrumentation amplifier using only 2 CMOS current-controlled conveyors and an active resistor is introduced. The new approach, which has no passive components, offers a wide bandwidth. and a high common-mode rejection ratio (CMRR). Electronically controllable gain by voltage and current is also obtained by this new circuit. The circuit is simulated using the parameters of a 0.35-mu m TSMC CMOS technology. Theoretical analysis of the circuits was carried out, and the performance of the block circuit was confirmed through PSpice simulation results.