LMX393HAKA+T Integrated Circuits (ICs)

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LMX393HAKA +T is a precision monolithic integrated circuit contained in Linear - Comparators. It is a differential input transistor based on voltage amplifiers and a Schmidt trigger, used to perform analog signal comparisons.

It consists of two independent unity gain buffer amplifiers, each followed by a Schmidt trigger. The 1st stage amplifier isolates and level shifts the signal, the two Schmitt triggers convert the signal in the form of a “square-wave”. The LMX393HAKA+T is not only an excellent comparator for threshold detection, it is also useful for hysteretic operation.

In order to achieve its reliable operation, the LMX393HAKA+T utilizes an external diode protection circuit. The diode circuit prevents any voltage outside its specified range from registering in the sensitized area of the device. Additionally, the hysteretic circuit that the LMX393HAKA+T uses allows for its sensitive operation. The hysteretic circuit prevents the LMX393HAKA+T from oscillating.

The LMX393HAKA+T operates with a power supply voltage between 3-30V, suitable for use with a wide range of input voltage signals. Operating temperature range can be between -55C to +120C, thus this device provides higher temperature stability. It has an output current capability of up to 15mA, providing fast switching response.

Due to its high reliability, the LMX393HAKA+T is ideally suited for a number of applications including: power on/off detection, audio signaling, switch debouncing and oscilloscope triggering. It is also used in medical equipment, alarm systems, portable electronics, test & measurement and communication systems.

The basic circuit of LMX393HAKA+T is shown below:

The working principle of the LMX393HAKA+T begins with the application of a signal to the input. The input signal is then divided into two equal parts and each part is fed to the corresponding amplifier. Each amplifier has a unity gain buffer connected to it, so that the input and output voltages remain equal. This buffering ensures high accuracy of voltage transfer.

The output of the two amplifiers is then compared to detect if the signal is below or above the desired level. This comparison is done by the two Schmitt triggers, which convert the signal in the form of a “square-wave”. After conversion, the output of the Schmitt triggers is compared with the reference signal. If the input signal is below the reference signal, the output signal will be either high or low, depending on the hysteretic values set.

The LMX393HAKA+T is an ideal solution for any applications that require accurate and reliable signal comparison. Its high input range and temperature stability, coupled with its fast response time and protection circuit, makes it an excellent choice for any analog signal comparison task.

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