LM4041DEM3X-ADJ

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The LM4041DEM3X-ADJ is an Adjustable Output Shunt Voltage Reference from Texas Instruments. It is a precision low-dropout, low-temperature drift shunt voltage reference. It stands out among other voltage references due to its excellent temperature stability over a wide range of operating conditions. This device is ideal for use in precision measurement and monitoring applications such as power supply, point-of-load controllers, weighing scales, and data acquisition systems.

The LM4041DEM3X-ADJ is fully specified for operation over the extended temperature range of -40°C to +125°C. It is adjustable, allowing the user to set the output voltage with a slightly more complex circuit than a fixed reference, thereby giving the user more flexibility and output potential. The phenomenon of tracking inside the device ensures that two independently adjustable LINEAR regulators, referenced to the same voltage point, will track over the full temperature and load range to within 1 mV.

As a precision low-dropout, low-temperature drift shunt voltage reference, the LM4041DEM3X-ADJ operates on a simple principle of a junction bandgap voltage reference, where the base-emitter voltage of a transistor is directly proportional to absolute temperature (in Kelvins). The difference between the base-to-emitter voltage of two transistors, selected for matching at 25°C, is then amplified by a series of transistors to generate the desired bandgap voltage.

The LM4041DEM3X-ADJ has an accuracy of 0.035% and temperature stability of 0.005%. Furthermore, it has an output voltage range of 2.0V to 12.0V, with a standard tolerance of 0.1%. The device is capable of sourcing 325 µA of output current and is available in the familiar TO-220 package. It operates with a wide range of supply voltages, from 2.5V up to 16V. Additionally, the low output impedance minimizes voltage variations caused by the varying loading conditions of the system.

In conclusion, the LM4041DEM3X-ADJ adjustable output shunt voltage reference from Texas Instruments is an ideal choice for applications that require precision measurements and monitoring. Its excellent temperature stability, accuracy, and output voltage range make it suitable for a wide range of applications. It is also equipped with a low output impedance to minimize variations due to changing loading conditions.

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