QuickStrike said:The photodiode (sfh203FA) I'm using already has IR filter.
QuickStrike said:what u mean by : "AC couple your receiver".
Can u tell me which of the 4 configuration of receivers from the attachment, is the correct one?
QuickStrike said:Actually I need to pass an FSK signal (1 MHz and 2 MHz).
Would it be possible to just connect a voltage comparator and maybe with a feedback might prevent the signal from changing shape and width when increasing frequency.
QuickStrike said:Ok I'll use 1 and 1.1MHz
But, could be possible to just use a voltage comparator. Without the need to use a high pass filter.
The whole point of my project is so I don't use any capacitors.
Since the distance is only 3-4cm I probably don’t even need an amplifier. No?
So that is y I want to try to make it work with just a voltage comparator. So I was hoping to build a circuit using the voltage comparator that can receive a 1MHz signal and give a digital output.
QuickStrike said:So I don't really need an amplifier for my case, (i.e 3-4 cm distances) right?
But how can I make the voltage comparator convert current to voltage and at the same time compare the signal with a voltage reference to give a digital output or a square wave output? Can this be done?
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