NJM12901M Integrated Circuits (ICs)

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The NJM12901M is an operational amplifier linear comparator that is designed to compare two different voltage levels and switch according to the result. In the NJM12901M, the voltage clocks of the two inputs are different and the output is the latch signal which is the selection clock of the two inputs. When both voltage levels are the same, the latch signal does not change.

The NJM12901M is usually used to detect varying conditions, such as temperature, humidity, vibration, current, voltage, pressure, and other signals. It can be used to compare two signals, to compare two separate signals, or to compare one signal with a reference voltage. In addition, the NJM12901M is suitable for applications requiring high accuracy, fast response, and low-power consumption.

The working principle of the NJM12901M is as follows: The comparator module consists of two amplifiers, an internal voltage reference and a main amplifier. The main amplifier is composed of four transistors. One of the inputs of the module is connected to the internal voltage reference and the other input is connected to the output terminal via two fixed resistors. The output of the internal voltage reference is connected to the input of the main amplifier. The output of the main amplifier is sent to the output terminal.

When the input voltages are the same, the output is low and does not change. When the input voltage at the non-reference input is higher than that at the reference input, the output goes high. When the non-crossover input is lower than the reference input, the output goes low. The NJM12901M is characterised by its high accuracy, high input impedance, low offset voltage, and low power consumption.

The NJM12901M linear comparator is compatible with a wide range of applications that require precise voltage comparison. It can be used in temperature controllers, gas detector controllers, photoelectric sensors, motor speed controllers, data communication, intrusion detectors, motor control, and process control. As well as this, it can also be used in embedded systems for applications such as automotive, consumer electronics, medical, and industrial motor controls.

In conclusion, the NJM12901M is a linear comparator that is suitable for many applications that require precise voltage comparison. It has high accuracy, high input impedance, low offset voltage and low power consumption, as well as being compatible with a wide range of applications. It can be used in temperature controllers, gas detector controllers, photoelectric sensors, motor speed controllers, data communication, intrusion detectors, motor control, and process control.

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