Log Amplifier Circuit Diagram. For much higher currents there will be some errors to deal with. This chapter discusses about the logarithmic amplifier and anti logarithmic amplifier in detail.

Fig Logarithmic Amplifier Using Matched Transistors Download Scientific Diagram
Fig Logarithmic Amplifier Using Matched Transistors Download Scientific Diagram from www.researchgate.net

The circuit arrangement for logarithmic amplifier converter is illustrated in figure 1. In this article we will see the different log amplifier circuits its working and log amplifier applications. The basic output equation of a log amplifier is v vout k ln vin vref.

Hank zumbahlen with the engineering staff of analog devices in linear circuit design handbook 2008 section 2 8 logarithmic amplifiers.

Log amplifier using a single diode and op amp. The circuit arrangement for logarithmic amplifier converter is illustrated in figure 1. Where vref is the constant of normalisation and k is the scale factor. Log amplifier or logarithmic amplifier is an electronic circuit that produces output that is proportional to the logarithm of the applied input.