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Advances in Radio Science An open-access journal of the U.R.S.I. Landesausschuss in der Bundesrepublik Deutschland e.V.
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Volume 6
Adv. Radio Sci., 6, 201–204, 2008
https://doi.org/10.5194/ars-6-201-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.
Adv. Radio Sci., 6, 201–204, 2008
https://doi.org/10.5194/ars-6-201-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.

  26 May 2008

26 May 2008

A 3rd-order current-mode filter in 0.12 μm CMOS

R. Kolm and H. Zimmermann R. Kolm and H. Zimmermann
  • Vienna University of Technology, Institute of Electrical Measurements and Circuit Design, Gusshausstraße 25/354, 1040 Vienna, Austria

Abstract. For software radio applications in system-on-chips, a 3rd-order current-mode Butterworth filter in 120 nm CMOS is realized. This filter is used for reconstruction purposes between a current-steering DAC and a current-mode mixer. Power can be reduced by using a current-mode architecture. The cut-off frequency of this filter is switchable between 1 MHz and 4 MHz, the current consumption is 4.5 mA at VDD=1.5 V, the inband noise density is 100 pA/√Hz and it has a dynamic range up to 65 dB.

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