RESISTANCE-VOLTAGE CONVERSION CIRCUIT

摘要

PURPOSE: A resistor-to-voltage converting circuit is provided to be capable of securing less power consumption and high reliability. CONSTITUTION: A resistor-to-voltage converting part(14) is connected to an output terminal of a sensor and converts a resistance value signal into a voltage value signal. A buffer amplifier(15) amplifies an output signal of the resistor-to-voltage converting part(14). An adjustment part(18) is supplied with an output signal of the buffer amplifier(15) and adjusts a variation range of a signal voltage to output a signal having an adjusted variation range. A zero point adjusting part(19) generates a reference voltage and outputs a zero point voltage for adjusting a zero point. A summator(20) sums an output signal of the adjustment part(18) and an output signal of the zero point adjusting part. An output driving part(22) amplifies an output signal of the summator(20) to output a drive output signal capable of driving a load.