What Are Transconductance Amplifiers?
Transconductance amplifiers are amplifiers that vary the output current in response to changes in input voltage.
Conductance refers to the ratio of input voltage to output current. The operating principle involves an increase in output current due to the voltage difference across the transistors. They are commonly used in analog switching circuits, operational amplifiers, electrochemical sensors, among others, and are incorporated as fundamental components in various analog circuits, enabling the conversion of analog signals to digital signals.
Their structure consists of input terminals, output terminals, and gain control terminals, allowing for broad control of gain and characterized by low noise and high-speed operation. When using them, it’s important to ensure that the output current does not exceed their peak value and stays within the range of input voltage.