A current amplification circuitry, comprising a signal generator, a plurality of first current amplification circuits, an operational amplifier, and a feedback resistor, wherein the signal generator is coupled to the plurality of first current amplification circuits and configured to provide a corresponding one voltage signal of a plurality of voltage signals to a respective one current amplification circuit of the plurality of first current amplification circuits; wherein each one of the plurality of first amplification circuits comprises a current mirror, the current mirror being coupled to a voltage input terminal, the signal generator and a first, inverting, input terminal of the operational amplifier respectively, and the current mirror being configured to amplify a current from the voltage input terminal in the case that there is a voltage difference between the voltage signal provided by the signal generator and a voltage signal provided by the voltage input terminal, and to provide the amplified current to the operational amplifier; and wherein the operational amplifier is coupled to the voltage input terminal via a second, non-inverting, input terminal and configured to amplify the amplified current, wherein the current mirror comprises: a first transistor, a control electrode and a first electrode of the first transistor being coupled to the voltage input terminal, and a second electrode of the first transistor being coupled to the voltage signal provided by the signal generator; and a second transistor, a control electrode of the second transistor being coupled to the control electrode of the first transistor, a first electrode of the second transistor being coupled to the second electrode of the first transistor, and a second electrode of the second transistor being coupled to the first input terminal of the operational amplifier, wherein one end of the feedback resistor being coupled to an output terminal of the operational amplifier, and the other end of the feedback resistor being coupled to the first input terminal of the operational amplifier. wherein the signal generator is coupled to the plurality of first current amplification circuits and configured to provide a corresponding one voltage signal of a plurality of voltage signals to a respective one current amplification circuit of the plurality of first current amplification circuits; wherein each one of the plurality of first amplification circuits comprises a current mirror, the current mirror being coupled to a voltage input terminal, the signal generator and a first, inverting, input terminal of the operational amplifier respectively, and the current mirror being configured to amplify a current from the voltage input terminal in the case that there is a voltage difference between the voltage signal provided by the signal generator and a voltage signal provided by the voltage input terminal, and to provide the amplified current to the operational amplifier; and wherein the operational amplifier is coupled to the voltage input terminal via a second, non-inverting, input terminal and configured to amplify the amplified current, wherein the current mirror comprises: a first transistor, a control electrode and a first electrode of the first transistor being coupled to the voltage input terminal, and a second electrode of the first transistor being coupled to the voltage signal provided by the signal generator; and a second transistor, a control electrode of the second transistor being coupled to the control electrode of the first transistor, a first electrode of the second transistor being coupled to the second electrode of the first transistor, and a second electrode of the second transistor being coupled to the first input terminal of the operational amplifier, wherein one end of the feedback resistor being coupled to an output terminal of the operational amplifier, and the other end of the feedback resistor being coupled to the first input terminal of the operational amplifier. a first transistor, a control electrode and a first electrode of the first transistor being coupled to the voltage input terminal, and a second electrode of the first transistor being coupled to the voltage signal provided by the signal generator; and a second transistor, a control electrode of the second transistor being coupled to the control electrode of the first transistor, a first electrode of the second transistor being coupled to the second electrode of the first transistor, and a second electrode of the second transistor being coupled to the first input terminal of the operational amplifier, wherein one end of the feedback resistor being coupled to an output terminal of the operational amplifier, and the other end of the feedback resistor being coupled to the first input terminal of the operational amplifier.