All-parallel analog-digital converter of VCO (voltage-controlled oscillator)-based comparators
A voltage-controlled oscillator, analog-to-digital converter technology, applied in analog-to-digital conversion, code conversion, instruments, etc., can solve the problems of unstable output, poor anti-noise ability, and difficult design of low power supply voltage, and achieve reliability. The effect of high and good anti-noise ability
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[0019] Such as Figures 1 to 7 , The full parallel analog-to-digital converter system block diagram based on the voltage-controlled oscillator comparator proposed by the present invention, as attached figure 1 As shown, the structure of the ADC includes a sampling circuit, a resistor divider circuit, a comparator based on a voltage-controlled oscillator, a D flip-flop and a priority encoder. Its specific structure is as follows: the input voltage signal VIN is connected to the sampling circuit, and then connected to the input positive terminal of each comparator based on the voltage-controlled oscillator, and the reference voltage signal VREF is divided by resistors and the reference voltages V1, V2 to Vn are respectively connected to The input negative terminal of the comparator of the corresponding voltage-controlled oscillator with reset control signal, the output of each comparator is connected to the data input terminal of the D flip-flop, and the output terminal of the...
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