Voltage-current converter, corresponding device and method

A device, comprising:

• a circuit, comprising:
• first and second amplifiers, comprising homologous first input nodes configured to receive a voltage signal therebetween, and comprising homologous second input nodes having a resistor coupled therebetween, wherein the first amplifier comprises a first output node and wherein the second amplifier comprises a second output node;
• first current mirror circuitry comprising a first input transistor having a first control terminal coupled to the first output node of the first amplifier, wherein the first current mirror circuitry comprises a first current mirror output node;
• second current mirror circuitry comprising a second input transistor having a second control terminal coupled to the second output node of the second amplifier, wherein the second current mirror circuitry comprises a second current mirror output node;
• and
• first and second current sensing circuitry having first and second current output nodes, wherein the first and the second current sensing circuitry is coupled to the first current mirror output node and to the second current mirror output node, respectively, wherein the first and second current output nodes are configured to provide therebetween a current that is a function of the voltage signal between the homologous first input nodes of the first and the second amplifiers;
• and
• a source of the voltage signal coupled to the circuit and configured to apply the voltage signal differentially between the homologous first input nodes, wherein a current-converted replica of the voltage signal is available between the first and second current output nodes.

A method of producing a current signal, the method comprising:

• applying a voltage signal differentially between homologous first input nodes in a circuit, the circuit comprising:
• first and second amplifiers, comprising the homologous first input nodes configured to receive the voltage signal therebetween, and comprising homologous second input nodes having a resistor coupled therebetween, wherein the first amplifier comprises a first output node and wherein the second amplifier comprises a second output node;
• first current mirror circuitry comprising a first input transistor having a first control terminal coupled to the first output node of the first amplifier, wherein the first current mirror circuitry comprises a first current mirror output node;
• second current mirror circuitry comprising a second input transistor having a second control terminal coupled to the second output node of the second amplifier, wherein the second current mirror circuitry comprises a second current mirror output node;
• and
• first and second current sensing circuitry having first and second current output nodes, wherein the first and the second current sensing circuitry is coupled to the first current mirror output node and to the second current mirror output node, respectively, wherein the first and second current output nodes are configured to provide therebetween a current that is a function of the voltage signal between the homologous first input nodes of the first and the second amplifiers;
• and
• collecting a current-converted replica of the voltage signal between the first and second current output nodes in the circuit.