I am building a circuit to measure complex frequency. The only chip that I found is AD5933 with frequency range up to 100 kHz. Is there any thing similar to this chip but with higher frequency such as 2 MHz?
there is nothing for 2MHz...
May I ask why do you need 2MHz?
thank you for your fast response. We need the the frequency spectrum for a biosensor application. And with this kind of sensor, signal normally appears at high frequency (around 200 kHz at least). That's why 2 MHz. Previouly we used a Lock-In Amplifier but it is to bulky. We would like to minize it? Is there any other option?
we dont have any integrated solution for your problem...
the only thing that I can recommend is to use the AD5933 + Y-mixer + clock...
But this solution is probably bulky and hard to tune if your are interested in wide spectrum.
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