2. Comparator: An integrated operational amplifier can also be used as a comparator. When the input voltage exceeds the threshold voltage, the output voltage will switch to high level; When the input voltage is lower than the threshold voltage, the output voltage will switch to low level. Comparators are often used in voltage detection, switch control, circuit protection and so on. 3. Filters: Because of the high gain and high input impedance of the integrated operational amplifier, it can be used to design various types of filters, such as low-pass filters, high-pass filters, band-pass filters and band-stop filters. Filters are widely used in signal processing, audio processing, power supply denoising and other fields. 4. Signal shaper: The integrated operational amplifier can also be used as a signal shaper. For example, in an oscillating circuit, an integrated operational amplifier can be used to generate a stable triangular wave or square wave, which can be used to drive other circuits or realize signal waveform modulation.
5. Phase detector: The integrated operational amplifier can also be used as a phase detector. For example, it is very common to use two integrated operational amplifiers in a circuit to detect the phase difference of two signals. 6. Controller: Because the integrated operational amplifier has the characteristics of high precision, high speed and stability, it is widely used in various control systems, such as temperature controller, voltage controller, current controller and lighting controller. In a word, integrated operational amplifier has a wide range of applications, including signal amplification, signal conditioning, control, measurement and detection. It is one of the indispensable components in electronic engineering.