J. Mulder et al., AN INSTANTANEOUS AND SYLLABIC COMPANDING TRANSLINEAR FILTER, IEEE transactions on circuits and systems. 1, Fundamental theory andapplications, 45(2), 1998, pp. 150-154
An inherent characteristic of most translinear (TL) filters is instant
aneous companding. This brief describes a distortionless syllabic comp
anding TL filter based on the ''analog floating-point technique'' [1],
Through the addition of a compensation current to each of the capacit
ances in the filter, distortion is eliminated, By applying syllabic co
mpanding to a TL filter, the input current can be much larger than the
quiescent current, thus increasing the dynamic range.