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ADA4817-1 differential to single end

Question asked by TUhallo on Dec 1, 2014
Latest reply on Dec 3, 2014 by AnnaFeB

I use ADA4817-1 to convert differential voltage to single end. The common voltage is +0.3V ~ +0.7V, and the differential voltage is about 5mV to 2000mV. The source impedance is about 5k ~10k Ohm. Signal frequency from DC to100MHz.

The simple circuit see below

ddiff.png

But the output is vary from temperature(source impedance changed with temperature).

I've tried noninverting buffer circuit, but the slew rate of the output became bad(<3V/100nS).

Any suggestions about the circuit or other amplifier ?


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