LM4040BEX3-5.0+T

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The LM4040BEX3-5.0+T voltage reference is an integrated voltage reference system from Texas Instruments which is suitable for use in a wide range of applications. It combines a low-power, low-noise voltage guideline amplifier and two precision voltage references into a single solution, enabling a high level of accuracy, reliability and performance. The LM4040BEX3-5.0+T is part of the LM4000 and LM4000B series of Precision Voltage References and is designed to offer high accuracy, low power, and high temperature stability.

The LM4040BEX3-5.0+T voltage reference offers a precision output reference voltage of 5.0V with an accuracy of +/- 0.03%. The LM4040BEX3-5.0+T utilizes a precision amplifier circuit, which provides an output voltage that is permanently calibrated, and is buffered by an NPN transistor for further protection against line and load variations. The voltage reference has a drift rate of 50ppm/degrees Celsius and a low power consumption of 5mA.

The LM4040BEX3-5.0+T is suitable for a wide range of applications, including voltage monitoring and precision control for microprocessors and embedded systems, as well as regulating on-board communication and control circuits. The LM4040BEX3-5.0+T can also be used in combination with microcontrollers or digital signal processors (DSPs) to implement a feedback circuit to accurately regulate power conversion stages or other essential functions. In addition, it can be used as a voltage reference to calibrate the accuracy of ADC/DAC converters and voltage-to-frequency converters.

In addition to being an ideal solution for a diverse range of applications, the LM4040BEX3-5.0+T also has several protection features that ensure its long life and dependability. It has an over-temperature protection that shuts off the device when it detects an excessively high temperature to maintain thermal stability. It also features built-in ESD protection and is AEC-Q100 qualified.

The LM4040BEX3-5.0+T voltage reference works by precisely setting a reference voltage level and maintaining it despite any changes in input voltage or load. This is achieved through a network of two precision voltage references (VREF1 and VREF2) and a voltage guideline amplifier, which is a three-terminal device that senses the input voltage at its input terminal, amplifies the input voltage, and produces an output voltage at its output terminal that is proportional to the input voltage. The output voltage is regulated by VREF1 and VREF2 and the amplified output is used to regulate the supply to the microprocessor or embedded system.

In order to obtain accuracy from the LM4040BEX3-5.0+T voltage reference, special attention must be given to the installation of the device, as well as the design of the application circuit. For example, the component must be connected to its own dedicated power supply with sufficient noise filtering to ensure that the reference voltage is not affected by any external noise sources. In addition, the component must be mounted properly on a PC board with adequate thermal relief and insulation to ensure proper thermal management and improve general performance.

In summary, the LM4040BEX3-5.0+T voltage reference from Texas Instruments is a high-performance, low-power voltage reference that offers high accuracy and temperature stability. Its versatile design makes it suitable for use in a wide range of applications such as voltage regulation, power conversion and calibration. Its protective features enable it to deliver improved reliability and long life. The component must be installed and designed properly in order to achieve the best performance from it, and this can require special installation and design techniques.

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