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ADL5801 Low Freq IF biasing

Question asked by PaulvdM on Nov 21, 2013
Latest reply on Nov 26, 2013 by ebalboni

I would like to use the ADL5801 for a Zero IF (up to 100kHz) application and would therefore have to bias the IF with resistors.

I would also like to preserve the voltage gain of the ADL5801 (i.e. high impedance IF load) to ease the noise requirements of the ensuing Op-Amp.

Will it be possible to create a 200 ohm bias network from a higher DC voltage(such as 10V) with the circuit attached?

If it is indeed possible, what is the bias current required, so that I can pick a value for R1?

ADL5801_10Vbias.JPG

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