Current-Sensing Amplifiers

Current-sensing amplifiers are electronic devices that are used to amplify a small AC or DC current and produce a corresponding output voltage. They are commonly used in applications where it is necessary to measure, monitor, or control the current in a circuit or system. A current-sensing amplifier typically consists of a transimpedance amplifier, which converts the input current into a voltage, and an amplifier stage, which amplifies the output voltage to a level that can be measured or processed by other electronic components. The specific design and operating characteristics of a current-sensing amplifier depend on the intended application and the range of currents to be measured. Some current-sensing amplifiers are designed to operate over a wide dynamic range and can measure both AC and DC currents, while others are optimized for a specific current range or type of current.