Analog-to-Digital Converters and Electronics

Abstract

An analog-to-digital converter and electronic equipment, the analog-to-digital converter includes: a voltage-frequency converter, adapted to receive an input voltage, and convert the input voltage into a pulse signal; a frequency counter, within the sampling time defined by the sampling signal , counting the pulse signals of the voltage-to-frequency converter to obtain a count value. The technical scheme of the invention improves the resolution and resolution flexibility of the analog-to-digital converter.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to an analog-to-digital converter and electronic equipment. Background technique [0002] In electronic circuits, an analog-to-digital converter (Analog to Digital Converter, ADC) is a basic module that is used in many scenarios. Its input is an analog signal and its output is a digital signal. For the resolution of the ADC, the demand is usually higher. Resolution refers to the ability of the ADC to resolve the smallest signals that can be quantized. The higher the resolution, the more accurate the ADC conversion results. For example, for an ADC with a resolution of 10 bits, the minimum quantization level it can resolve is 1 / 2 of the full scale 10 . That is to say, the higher the resolution, the more parts the level in the full scale can be divided into (for example, 10 bits divide the full scale into 2 10 parts), the more accurate the conversion result is, and th...

AI Technical Summary

Problems solved by technology

[0004] However, in the application scenario of matching passive devices, the existing ADC cannot meet the resolution accuracy requirements of passive devices

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