Linearly tunable transconductor using modified CDBA

Zeki A., TOKER A., Ozoguz S.

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, vol.26, no.2, pp.179-183, 2001 (SCI-Expanded) identifier identifier


With a slight modification in current differencing buffered amplifier (CDBA), a new block, namely differential-input current feedback amplifier (DFCA), is obtained. It is shown that, with two additional MOSFETs, this modified CDBA structure can be utilized as a linearly tunable transconductor, which can also be converted to a variable-gain amplifier or an analogue multiplier.