Log amplifier

A transdiode configuration with a BJT connected in the negative feedback loop.

A log amplifier is an amplifier for which the output voltage V_out is K times the natural log of the input voltage V_in. This can be expressed as, resistor on capacitor

where V_ref is the normalization constant in volts and K is the scale factor.

单词	Log amplifier
释义	Log amplifier 英语百科 Log amplifier A log amplifier is an amplifier for which the output voltage V_out is K times the natural log of the input voltage V_in. This can be expressed as, resistor on capacitor where V_ref is the normalization constant in volts and K is the scale factor.
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