Voltage frequency converter ADC

Voltage frequency converter ADC is an indirect ADC, which first converts the voltage of the input analog signal into a pulse signal proportional to it, and then counts the pulse signal within a fixed time interval, and the counting result is the digital quantity proportional to the input analog voltage signal. In theory, the resolution of this ADC can be increased indefinitely, as long as the application time is long enough to meet the width of the cumulative number of pulses required by the output frequency. Advantages: High precision, low price, low power consumption. Disadvantages: Similar to integral ADC, its conversion rate is limited to 100-300SPS at 12 bits.

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