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Low voltage CMOS fully differential current feedback amplifier with controllable 3-dB bandwidth

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Abstract

This paper presents a CMOS fully differential current feedback operational amplifier with controllable 3-dB bandwidth. The FDCFOA has the advantage of a wide range controllable 3-dB bandwidth (∼57–500 MHz) without changing the feedback resistance. The FDCFOA has a standby current of 320 μA. Application of the proposed FDCFOA in realizing second order low-pass filter with controllable 3-dB bandwidth is given. PSpice simulations of the FDCFOA block and its application are given using 0.25 μm CMOS technology from MOSIS and dual supply voltages ±0.75 V.

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Authors and Affiliations

  1. Electronics and Communication Department, Cairo University, Cairo, Egypt

    Ahmed H. Madian & Ahmed M. Soliman

  2. Electrical & Electronics Department, German University in Cairo (GUC), Cairo, Egypt

    Soliman A. Mahmoud

Authors
  1. Ahmed H. Madian
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  2. Soliman A. Mahmoud
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  3. Ahmed M. Soliman
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Correspondence to Soliman A. Mahmoud.

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Madian, A.H., Mahmoud, S.A. & Soliman, A.M. Low voltage CMOS fully differential current feedback amplifier with controllable 3-dB bandwidth. Analog Integr Circ Sig Process 52, 139–146 (2007). https://doi.org/10.1007/s10470-007-9108-y

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  • DOI: https://doi.org/10.1007/s10470-007-9108-y

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