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A low-voltage low-power current-mode high-pass leapfrog filter

Serdijn, WA; (1993) A low-voltage low-power current-mode high-pass leapfrog filter. Analog Integrated Circuits and Signal Processing , 3 (2) pp. 105-112. 10.1007/BF01239368.

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Abstract

A low-power bipolar continuous-time low-frequency high-pass second-order Butterworth filter is presented that works in the current domain and operates from a single 1.3-V battery. The filter contains two adjustable integrators. These integrators are realized by means of a capacitance and an adjustable transconductance amplifier with an indirect output. The complete filter, including all capacitances needed, can be integrated in an ordinary full-custom IC process. A semicustom realization is shown. The filter demonstrates operation down to 1 V with less than 16 μW power consumption and a dynamic range of 50 dB. Its cutoff frequency can be exponentially tuned with a control current over a range from 100 Hz to 1 kHz. © 1993 Kluwer Academic Publishers, Boston.

Type: Article
Title: A low-voltage low-power current-mode high-pass leapfrog filter
DOI: 10.1007/BF01239368
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/1528254
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