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Low Cost, DC to 50 MHz, 60 dB Logarithmic Amplifier?

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Jadeit

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I need measure power on RF line and search subj.
My firs choice is **broken link removed** , on ebay 1$, but ihis is 92bB there may be an equivalent of 60dB.
 
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It's better than you expected .. what else ??
 

Whether better depends on the angle of view.
AD8307 has 92dB, but also Slope of 25 mV/dB,
it would be better for me 60dB and Slope of 50 mV/dB,
+30dB is for me not usable and 2x higher Slope is for me good for ADC resolution.

but in the worst of course AD8307 will satisfy too
 

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