Basic signal and power connection circuit of logarithmic and logarithmic ratio amplifier LOG101/104

Published:2012/8/22 21:11:00 Author:Ecco | Keyword: Basic, signal , power, connection , logarithmic, logarithmic ratio , amplifier | From:SeekIC

Signal current I1/I2 is input to pin 1 and pin 8, then pin 3 outputs voltage VOUT = (1V) · log (I1/I2). In order to reduce the impact of the wire inductance, positive and negative supply terminal must be added to decoupling capacitor, and 10μF tantalum capacitor and 1000pF ceramic capacitor are connected in parallel to constitute a decoupling capacitor, and 1000pF ceramic dielectric capacitor is mainly used to filter out high frequency noise.



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