Phase detector with 10-bit accuracy


Posted on Dec 10, 2012

Signals of identical frequency are applied to sync input (Pin 6) and to the demodulator input (Pin 4), respectively, the demodulator functions as a phase detector with output dc component being proportional to phase difference between the two inputs. The signals must be referenced to 0 V for dual supply operation or to VR/2 for single supply operation. At ± 5-V supplies, the demodulator can easily handle 7-V peak-to-peak signals. The low-pass network configured with the uncommitted amplifier dc output at Pin 1 of the device.


Phase detector with 10-bit accuracy
Click here to download the full size of the above Circuit.

The dc output is maximum (+ full-scale) when Vj and V2 are 180° out of phase and minimum (- full-scale) when the signals are in phase.




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