Digital display pressure measuring circuit diagram

Published:2011/4/26 2:06:00 Author:Nicole | Keyword: digital display, pressure measuring | From:SeekIC

The figure (1) is a digital display pressure measuring circuit diagram. The performance of this circuit: the additional voltage is about 12.8V, the current is 30mA; when it is maximum gain, the input voltage range is 0.8mVW; the zero adjustment range is ±1mV/V; the shown value is 0-1999; the zero shift is 2μV/℃; the additional voltage shift is 0.005%℃; the nonlinear is ±0.05%FS; the noise peak-peak value is 1.5μV. LC filter is composed of L1、L2、C1 and C2, it is used to decrease the influence of electromagnetic noise.



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