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Altera_Forum's avatar
Altera_Forum
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12 years ago

Comparator circuit with inbuilt Fixed Reference Voltage

I need to build a comparator circuit using the FPGA with minimum external components. A negative analog voltage will be input and has to be compared with a fixed voltage of -30mV to give a digi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

I am using the Cyclone II .

Is it more sensible to just use an Opamp as a Comparator instead or , first invert the signal and compare it using the FPGA.

Also, then the fixed reference voltage will need to be given externally or can that be provided by the board itself?