Switched- capacitor frequency-to-voltage and voltage-to-frequency converters

Novel switched-capacitor circuits for the frequency-to-voltage (F/V) and voltage-to-frequency (V/F) conversion are presented. The circuit operation is insensitive to both the offset voltages of op-amps and parasitic capacitances. Therefore, the circuits allow the accurate conversion over the wide dynamic range. Experimental results are also given to confirm the principles of operation.