Analog-to-digital converter and analog-to-digital conversion method

摘要

An analog-to-digital converter may include a voltage-controlled oscillator suitable for generating an oscillation wave with a frequency corresponding to an input voltage, a counter suitable for counting the activation number of the oscillation wave to generate a digital code, and an operation section setting unit suitable for setting an operation section of at least one of the voltage-controlled oscillator and the counter.

主权项

1. An analog-to-digital converter comprising:
a voltage-controlled oscillator suitable for generating an oscillation wave with a frequency corresponding to an input voltage; a counter suitable for counting the activation number of the oscillation wave to generate a digital code; and an operation section setting unit suitable for setting an operation section of at least one of the voltage-controlled oscillator and the counter, wherein the operation section setting unit comprises:
a replica voltage-controlled oscillator suitable for generating a replica oscillation wave with a frequency corresponding to a reference voltage;a replica counter suitable for counting the activation number of the replica oscillation wave to generate a replica digital code; anda comparator suitable for comparing the replica digital code with a preset code to generate an end signal for finishing operations of the voltage-controlled oscillator and the replica voltage-controlled oscillator.