BIPOLAR TRANSISTOR LOGARITHMIC CONVERTER WITH AC DIODE CONNECTION

A logarithmic converter circuit includes a converter input and a converter output. The circuit includes a first transistor which includes a control terminal, a first terminal coupled to the converter input, and a second terminal coupled to the converter output. The circuit includes a first operational amplifier which includes a first input coupled to the converter input, a second input coupled to a common potential, and an output coupled to the second terminal. The circuit includes a first capacitor coupled between the first terminal and the control terminal and includes a first resistor coupled between the control terminal and the common potential.