1.33 mW, 2 V CMOS continuous-time bandpass filter with two decades of centre frequency tuning range and high Q

Author(s): R.G. Carvajal ; J. Galan ; A. Torralba ; F. Muñoz ; J. Ramirez-Angulo
DOI: 10.1049/ip-cds:20045092

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Author(s): R.G. Carvajal ¹ ; J. Galan ² ; A. Torralba ¹ ; F. Muñoz ¹ ; J. Ramirez-Angulo ³
- Affiliations: 1: Departamento de Ingenieria Electronica, Escuela Superior de Ingenieros, Universidad de Sevilla, Sevilla, Spain
  2: Dept. Ingeniería Electrónica, Sist. Informáticos y Automática, Universidad de Huelva, Huelva, Spain
  3: Klipsch School of Electrical Engineering, New Mexico State University, Las Cruces, USA
Source: Volume 152, Issue 5, October 2005, p. 456 – 464
DOI: 10.1049/ip-cds:20045092 , Print ISSN 1350-2409, Online ISSN 1359-7000

A g_m-C bandpass biquad filter featuring two decades of centre frequency tuning capability and a wide range of quality factor tunability is presented. It uses a new linear operational transconductance amplifier (OTA) based on two crosscoupled class-AB pseudo-differential pairs, which exhibits a wide transconductance adjustability range with low power consumption. The filter has been fabricated in a standard 0.8 μm CMOS process. Experimental results show a frequency tuning range from 300 kHz to 32 MHz and a maximum quality factor of 501. The filter is operated at 2 V supply voltage with a power consumption ranging from 1.18 to 1.8 mW.

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1.33 mW, 2 V CMOS continuous-time bandpass filter with two decades of centre frequency tuning range and high Q

1.33 mW, 2 V CMOS continuous-time bandpass filter with two decades of centre frequency tuning range and high Q

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