Wa. Serdijn et al., CHAIN-RULE RESISTANCE - A NEW CIRCUIT PRINCIPLE FOR INHERENTLY LINEARULTRA-LOW-POWER ON-CHIP TRANSCONDUCTANCES OR TRANSRESISTANCES, Electronics Letters, 32(4), 1996, pp. 277-278
It is shown that, with the aid of five system blocks: namely two diffe
rentiators, an integrator, a multiplier and a nonlinear transresistor,
it is possible to obtain an inherently linear transresistor. A circui
t implementation that comprises only two capacitors and a handful of t
ransistors is proposed. The transresistor can be linearly controlled o
ver a wide range, from a few kilo-ohms up to many giga-ohms.