LM2903QDGKRQ1

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The LM2903QDGKRQ1 is part of a family of linear-comparators from integrated circuit manufacturers, Texas Instruments. It is designed to compare two differential input voltages, and to produce a single binary output depending on the state of the input voltages. Common applications for the device include voltage comparators, signal-level shifters, peak and valley detectors, window comparators and thermistors.

The principle of operation for the LM2903QDGKRQ1 can best be explained by understanding its three internal components, the differential-input AMP, the voltage-control input, and the output stage. The differential AMP consists of a differential input stage, where an isolated resistive signal having a high impedance is amplified and sent to the volume-control input stage. The voltage-control input stage is connected to a digital signal and is used to control the gain of the differential amplifier. The digital signal is then sent to the output stage and is ultimately compared to the amplified signal.

The output stage contains two MOSFETs acting as current-level shifters and one Schottky diode acting as a voltage-reference device. The current-level shifters take the amplified differential input signal and convert it to a certain level of voltage. The Schottky diode provides a reference voltage to the output MOSFETs and prevents over-voltage degradation. When the differential input voltages are different, the output stage will produce a binary output with one MOSFET conducting and the other in the cutoff mode.

The LM2903QDGKRQ1 is an excellent choice for many linear-comparator applications due to its wide range of input and output voltages. With a single power supply, it can handle inputs ranging from 1.5V to 15V, while its output will go from as low as 0V to as high as 24V. With a wide variety of features, the LM2903QDGKRQ1 is well-suited for applications such as voltage comparators, signal level shifters, peak and valley detectors, window comparators, and thermistors.

The LM2903QDGKRQ1 is designed for high-current, low-voltage applications. It features an improved internal design for reduced power dissipation, low current leakage, and higher speed operation. Its wide variety of features, such as its low input voltage, high input impedance, and wide range of output voltages make it ideal for many types of linear-comparator applications.

In conclusion, the LM2903QDGKRQ1 is an excellent linear-comparator device from Texas Instruments. It’s wide range of input and output voltages, low power dissipation and improved internal design make it suitable for many applications. With its extensive set of features, the LM2903QDGKRQ1 is a great choice for any linear-comparator project.

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