Circuit converts pulse width to voltage


Posted on Sep 1, 2012

The circuit in Figure 1 converts pulse information to a clean dc voltage by the end of a single incoming pulse. In another technique, an RC filter can convert a PWM signal to an averaged dc voltage, but this method is slow in responding. Converting low-duty-cycle pulse information is slower yet.


Circuit converts pulse width to voltage
Click here to download the full size of the above Circuit.

The circuit in Figure 1 uses two low-input-biascurrent LT1880 op amps, IC2 and IC3, and an LTC202 quad analog switch, IC1A, IC1B, IC1C, and IC1D, to configure the integrator and sampleand- hold stages that convert a single pulse to a dc voltage. Th





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