True_logarithmic_IF_amplifier

Published:2009/7/23 21:25:00 Author:Jessie | From:SeekIC

The SL531 shown here is a wide-band amplifier for use in IF circuits or strips ofthe true log type(where input and output are at the same frequency and nodetection Occurs) With the values shown,the frequency range is 10 to 200 MHz.An SL560 is used as a unity-gain buffer, the output of the log strip being attenuated before the SL560 to give a nominal 0-dBm output into 50Ω. The low-level gain is 60 dB with an output dynamic range of 20 dB.



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