Fast Video Signal Amplitude Measurer Circuit


Posted on Jun 20, 2012

Video-signal amplitude can be measured with this simple circuit, which is basically a modified standard peak detector. The device can verify RGB generated by video RAMDACs. Ul is a high-speed buffer and U2 is a latched comparator. CI is a hold capacitor. Reset is performed by Q3. U2 has a latch that maintains the last comparator state. The reset holds the comparator output low during the reset operation.


Fast Video Signal Amplitude Measurer Circuit
Click here to download the full size of the above Circuit.

The dc output voltage is equal to the signal`s maximum amplitude.




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