Logarithmic Amplifiers at Vernon Virgil blog

Logarithmic Amplifiers. Log amplifier is a linear circuit in which the output voltage will be a constant times the natural logarithm of the input. A graph of the transfer characteristic of a log amp is shown in figure 2. Figure 1 shows an amplifier that provides a logarithmic output for a linear input current or voltage. The term log amp, as it is generally understood in communications technology, refers to a device which calculates the log of an input signal's envelope. What does that mean in practice? When just resistors are used, which have a linear relation between voltage and current, the resulting amplifier exhibits a linear response. For input currents, the circuit will. The scale of the horizontal axis (the input) is logarithmic, and the ideal transfer characteristic is a straight line. Where vref is the constant of normalisation, and k is the scale factor. A logarithmic amplifier, or a log amplifier, is an electronic circuit that produces an output that is proportional to the logarithm of the applied. The basic output equation of a log amplifier is v vout = k ln (vin/vref); Take a look a the scope photo below.

A graph of the transfer characteristic of a log amp is shown in figure 2. Take a look a the scope photo below. For input currents, the circuit will. A logarithmic amplifier, or a log amplifier, is an electronic circuit that produces an output that is proportional to the logarithm of the applied. Log amplifier is a linear circuit in which the output voltage will be a constant times the natural logarithm of the input. Figure 1 shows an amplifier that provides a logarithmic output for a linear input current or voltage. What does that mean in practice? The basic output equation of a log amplifier is v vout = k ln (vin/vref); The scale of the horizontal axis (the input) is logarithmic, and the ideal transfer characteristic is a straight line. The term log amp, as it is generally understood in communications technology, refers to a device which calculates the log of an input signal's envelope.

Fig Logarithmic Amplifier Using Matched Transistors Download

Logarithmic Amplifiers For input currents, the circuit will. When just resistors are used, which have a linear relation between voltage and current, the resulting amplifier exhibits a linear response. Where vref is the constant of normalisation, and k is the scale factor. A graph of the transfer characteristic of a log amp is shown in figure 2. The scale of the horizontal axis (the input) is logarithmic, and the ideal transfer characteristic is a straight line. What does that mean in practice? Figure 1 shows an amplifier that provides a logarithmic output for a linear input current or voltage. Take a look a the scope photo below. Log amplifier is a linear circuit in which the output voltage will be a constant times the natural logarithm of the input. The term log amp, as it is generally understood in communications technology, refers to a device which calculates the log of an input signal's envelope. A logarithmic amplifier, or a log amplifier, is an electronic circuit that produces an output that is proportional to the logarithm of the applied. The basic output equation of a log amplifier is v vout = k ln (vin/vref); For input currents, the circuit will.