Switchable transconductance amplifier

Abstract

A basic (single-ended or differential) switchable transconductance amplifier has voltage-input circuitry and selector circuitry connected between capacitor circuitry and current-sink circuitry, where the capacitor circuitry and the selector circuitry are controlled to selectively convert an input voltage signal applied to the voltage-input circuitry into an output current signal, where the voltage-input circuitry and the selector circuitry are implemented at the same circuit level. More-complex circuits, such as multiplexers and de-multiplexers, can be based on the basic amplifier circuitry. By implementing the voltage-input circuitry and the selector circuitry at the same circuit level, the resulting circuit can have lower voltage overhead than equivalent prior-art circuitry, resulting in shorter switching time, higher operational bandwidth, and lower power consumption.

Dependencies are inferred from the claim text.