What is antilog amplifier?

An anti-logarithmic amplifier, or an anti-log amplifier, is an electronic circuit that produces an output that is proportional to the anti-logarithm of the applied input. In the circuit shown above, the non-inverting input terminal of the op-amp is connected to ground.

What are the drawbacks of log amplifier?

This type of log amp has three disadvantages: (1) both the slope and intercept are temperature dependent; (2) it will only handle unipolar signals; and (3) its bandwidth is both limited and dependent on signal amplitude.

What is the use of logarithmic amplifier?

In general, the principal application of log amps is to measure signal strength, as opposed to detecting signal content. The log amp’s output signal, which can represent a many-decade dynamic range of high-frequency input signal amplitudes by a relatively narrow range, is typically used to regulate gain.

What is the output voltage of the antilog amplifier?

Antilog amplifier using diode and transistor Vo is the output voltage. The non-inverting terminal of the op-amp is connected to the ground. This means that the voltage of the non-inverting terminal is zero volts.

Which is an example of a log and Antilog Amplifier?

Introduction Log and Antilog Amplifiers are non-linear circuits in which the output voltage is proportional to the logarithm (or exponent) of the input. It is well known that some processes such as multiplication and division, can be performed by addition and subtraction of logs. They have numerous applications in electronics, such as:

What is the formula for a log amplifier?

A log amplifier is an amplifier for which the output voltage Vout is K times the natural log of the input voltage Vin. V out = K ln ⁡ ( V in V ref ) {\\displaystyle V_{\ext{out}}=K\\ln \\left({\\frac {V_{\ext{in}}}{V_{\ext{ref}}}}\\right)}. where Vref is the normalization constant in volts and K is the scale factor.

Which is the opposite of a logarithmic amplifier?

Anti-logarithmic or exponential amplifier (or simply antilog amplifier) is an op-amp circuit configuration, whose output is proportional to the exponential value or anti-log value of the input. Antilog amplifier does the exact opposite of a log amplifier.

How is an op amp used in an inverting amplifier?

Above figure shows the circuit of a typical inverting amplifier using an op-amp. The circuit uses a negative feedback connection, through the resistor Rf. The input signal is applied to the inverting input terminal and the non-inverting input terminal is grounded.