Frequency converter - a single power supply voltage which is optimized for low-voltage sensing at the top and bottom ground

摘要

(57) using a charge pump to restore the output voltage of the [summary] input integrator, voltage - frequency converter. The implementation of the charge pump, voltage - using a charge pump capable of providing either a negative charge or positive charge as a restoring force to the integrator, the input of the frequency converter, above and below the ground by a single power supply It is possible to sense the voltage. By including a charge pump which is interleaved, the advantages of high performance and simple implementation is provided. Voltage - frequency converter, to aggregate error of leakage and all offsets at the input of the integrator amplifier is chopper-stabilized amplifier that gives the offset very low in the preferred embodiment. Voltage - and intended to be realized in the form of an integrated circuit, frequency converter, to achieve very high performance in an integrated circuit having a power requirement is very low.