Voltage / frequency and frequency / voltage conversion circuit composed of VFC320

Published:2011/7/6 19:28:00 Author:Lucas | Keyword: Voltage / frequency conversion, frequency / voltage conversion | From:SeekIC

Figure 1-22 (a) shows the circuit which could convert 0-+lOV input voltage Ui into the pulse with 0 -1OOkHz output frequency, and pin 7 of VFC320 is connected a resistor to directly connect to standard logic. Figure 1-22 (b) shows the the circuit which could convert the pulse with 0-100KHz input frequency into 0-+lOV output voltage UO. If the signal counter of CPU is for voltage / frequency converter output, then it can be used as the A / D converter with strong anti-noise ability; If the frequency / voltage converter is used in combination with the optical chopper, the motor speed can form analog voltage conversion circuit.



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