AMPLIFIERS INCLUDING TUNABLE TUNNEL FIELD EFFECT TRANSISTOR PSEUDO RESISTORS AND RELATED DEVICES

摘要

Neural signal amplifiers include an operational amplifier and a feedback network coupled between an output and an input thereof. The feedback network includes a tunnel field effect transistor (“TFET”) pseudo resistor that exhibits bi-directional conductivity. A drain region of the TFET may be electrically connected to the gate electrode thereof to provide a bi-directional resistor having good symmetry in terms of resistance as a function of voltage polarity.

主权项

1. A tunnel field effect transistor (“TFET”) pseudo resistor comprising:
a source region having a first conductivity type; a drain region having a second conductivity type that is different from the first conductivity type; a channel region having the first conductivity type between the source region and the drain region; a lightly-doped region between the source region and the channel region; a gate electrode on the channel region; and an electrical connection between the drain region and the gate electrode.