REF5045IDR

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REF5045IDR Application Field and Working Principle

REF5045IDR, belonging to PMIC-Voltage Reference, is a low-mass, low-power Voltage Reference, with a temperature stability of 3ppm/°C. It is commonly used in precision power management and signal conditioning that requires low noise and low drift accuracy.

REF5045IDR can provide an output voltage of 1.25V, 2.048V, 2.5V, 4.096V and 5.0V as standard and is available in an industry-standard 8 pin MSOP package. REF5045IDR features excellent load regulation, low noise and low power consumption, which make it an ideal choice for powering sensitive analog components or microprocessors in 3.3V, 1.8V, and 5V systems.

REF5045IDR has a wide range of applications. With the help of thin-film technology and high precision architecture, it can provide a stable and consistent output voltage to various types of circuits with varying current draw. It can also be used in mobile phones, cameras and other handheld devices, battery operated systems, low power mixed-signal applications, microcontroller systems, as well as aerospace controllers and military radar applications, where a reliable and accurate reference voltage is required.

REF5045IDR works through the use of two feedback loops. One loop, the pressure feedback loop, is used to regulate the output voltage within a predetermined tolerance range, while the other loop, the temperature compensation loop, is designed to correct the output voltage against temperature instruments. This ensures that REF5045IDR can maintain its set output voltage even when exposed to a wide range of temperature and load current variations.

The REF5045IDR operates on a fixed current supply and uses a high-precision voltage reference. The low-drift voltage reference circuit supplies a stable reference voltage that is used as the input for the pressure feedback loop. The pressure feedback loop consists of an operational amplifier, an active amplifier, and a shunt regulator. The shunt regulator is used to adjust the output voltage to the desired level.

The temperature compensation loop consists of a compensated operational amplifier, an active amplifier, and a temperature sensor. This loop helps to regulate the output voltage in the event of any temperature drift. When the temperature changes, the output of the temperature sensor is used to control the amount of current that is injected into the output of the temperature compensation loop, allowing the output voltage to remain constant.

REF5045IDR can be used in a variety of systems and applications where a consistently stable, accurate, low-noise and low-power voltage reference is needed. It is easy to maintain and requires minimal power to operate, making it a reliable, low-cost solution for various digital and analog signal applications.

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