A 0.8-V accurately tuned linear continuous-time filter

Gowtham Vemulapalli, Pavan Kumar Hanumolu, Youn Jae Kook, Un Ku Moon

Research output: Contribution to journalArticlepeer-review


An accurately tuned low-voltage linear continuous-time filter is presented in this paper. Accurate tuning is achieved using time-constant matched master-slave tuning combined with power-up mismatch calibration. A low-pass biquad designed for a corner frequency of 115 kHz achieves better than -80-dB total harmonic distortion with a 250-mVpp 10-kHz input signal. The prototype implemented in 0.18-μm CMOS process occupies an area of 0.4 mm 2 and dissipates 4.6 mW (2.6 mW for the filter and 2 mW for tuning) of power.

Original languageEnglish (US)
Pages (from-to)1972-1977
Number of pages6
JournalIEEE Journal of Solid-State Circuits
Issue number9
StatePublished - Sep 2005
Externally publishedYes


  • Continuous-time filter
  • Linear
  • Low-voltage
  • Master-slave tuning
  • Power-up mismatch calibration

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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