What is the transconductance of an amplifier?

A transconductance amplifier converts an input of voltage to an output of current. It is also called a current to voltage converter or I to V converter. It is called transconductance because the efficiency of the amplifier is measured in units of conductance. Transconductance amplifiers are classified into two types.

What is the purpose of the transconductance amplifier?

A transconductance amplifier converts an input voltage into an output current. Applications include variable frequency oscillators, variable gain amplifiers and current-controlled filters. These applications exploit the fact that the transconductance gain is a function of current flowing into the control current pin.

Which are the three characteristics of a transconductance amplifier?

The desirable characteristics of a transconductance amplifier are

• high input resistance and high output resistance.
• high input resistance and low output resistance.
• low input resistance and high output resistance.
• low input resistance and low output resistance.

What is transconductance amplifier formula?

Transconductance is the ratio of the current flowing through the output and the voltage arising in the input of electrical circuit/devices. Transconductance is calculated using the equation. gm=ΔIoutΔVin. It is used in bipolar junction transistors in order to measure its sensitivity.

What does this Op Amp/transistor circuit do?

Operations amplifiers – op-amps for short, are integrated circuits, constructed mostly out of transistors and resistors. These integrated circuits multiply an input signal to a larger output. You can use these components with voltage and current in both DC and AC circuits.

What is an operational amplifier circuit?

An operational amplifier or op-amp is simply a linear Integrated Circuit (IC) having multiple-terminals. The op-amp can be considered to be a voltage amplifying device that is designed to be used with external feedback components such as resistors and capacitors between its output and input terminals.

What is an op amp circuit?

An operational amplifier (op-amp) is a circuit component used for signal amplification. An op-amp takes a differential voltage present at its two input terminals, typically labeled V+ and V-, and multiplies the difference (V+ – V-) by a gain factor G; driving out an amplified signal as a single ended output voltage.

Is transistor a current amplifier or voltage amplifier?

Transistor as an Amplifier Amplifier circuit can be defined as, a circuit which is used to amplify a signal. The input of the amplifier is a voltage otherwise current, where the output will be an amplifier input signal. An amplifier circuit which uses a transistor otherwise transistors is known as a transistor amplifier.