Patent ID: 6975171
Filing Date: 2005-12-13
Classification: H03F,H03H

Abstract:
1. A voltage-to-current converter comprising: a first input terminal; a second input terminal; a first output terminal; a second output terminal; an adder configured to add voltage signals supplied to the first input terminal and the second input terminal respectively; a first inverting amplifier configured to reverse and amplify an output of the adder; a second inverting amplifier configured to reverse and amplify the output of the adder; a third inverting amplifier configured to reverse and amplify an output of the first inverting amplifier and to output a first reversed and amplified signal to the first output terminal as a first current signal; a fourth inverting amplifier configured to reverse and amplify an output of the second inverting amplifier and to output a second reversed and amplified signal to the second output terminal as a second current signal; a first capacitor connected between an input terminal and an output terminal of the third inverting amplifier; a second capacitor connected between an input terminal and an output terminal of the fourth inverting amplifier.