Frequency / voltage conversion circuit composed of TA7506

Published:2011/7/6 20:00:00 Author:Lucas | Keyword: Frequency conversion, voltage conversion | From:SeekIC

Al is the waveform shaping circuit, and A2 is the monostable multivibrator,then it gets a constant pulse width T2. VT1, VT2 and A3 constitute a frequency / voltage conversion circuit. In the T2 period, VTl turns on and integrates -U (REF) voltage; in the T1 period, VTl ends and VT2 conduction, the integrator A3 input voltage is OV. The C5, R3 and RP2 form low-pass filter, so A3 output is DC voltage. Adjusting the value of RP3 make fi = 12Hz, U. = OV; adjusting RP2 value make fi = 24Hz, U. = LV.



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