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There are many projects of Analog
Peak Detectors on the internet. But if you need a
Digital Peak Detector, you could convert the analog peak
with an ADC converter. There is another approach (to convert
the peak), with a DAC chip. The result is almost the same
(and cheaper), but with some restriction in its use. During
my Vocational and Technical Education in Telecommunications
(at ETFSP),
I was faced with this question, and I suggested a solution
described in the second image (below). |
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Digital Peak Detector: The 4017 (see correction) chip is a counter. While the analog input signal is above the DAC output, it is going to be a clock signal at the output of the AND gate. That way the counter is going to be increased, until the moment when the DAC output is a little bigger than the analog input signal. Correction: The 4017 is a decade counter, this project requires a binary counter. |