AD581UH/883B

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PMICs (Power Management ICs) are integrated circuit devices that connect and manage the power supply of a product or system. As part of their job, these devices can also provide voltage references, which are sets of voltage levels used to measure and regulate power supply voltages supplied throughout a system or device. The AD581UH/883B is a family of voltage references from Analog Devices that consume very low current, thus making them very useful in battery-powered equipment such as mobile phones and tablets. This article will discuss the application fields and working principles of the AD581UH/883B.

Application Field

The AD581UH/883B voltage references provide an accurate voltage reference that consumes very low current. This makes them ideal for battery-powered applications such as mobile phones and tablets, where they can help reduce the amount of power consumed. That said, they are not just limited to battery-powered systems, as they can also be used in a variety of other applications that require stable and low-power voltage references such as industrial controls and medical equipment.

The AD581UH/883B family of voltage references is also a good choice due to its wide operating temperature range (from -55°C to 150°C). This makes it suitable for applications where temperature peaks may occur, as well as for aerospace and defense applications. Furthermore, the wide temperature range makes the AD581UH/883B reliable for automotive applications where extended temperature ranges are required.

Working Principle

The working principle of the AD581UH/883B is based on a three-terminal bandgap reference architecture. This architecture allows the device to provide an accurate and stable reference voltage regardless of the external conditions. The output voltage is generated from a bandgap voltage reference, which is compared to a local generating circuit that adjusts the bias current. A feedback loop is then used to adjust the current so that the output voltage is correct and stable.

The AD581UH/883B features an ultra-low operating current of 3.5µA, making it ideal for low power applications. It also features an excellent line and load regulation of 0.2% over the entire temperature range and supply voltage range (2.7V to 16V). These features make it suitable for applications that require precise and stable output voltages.

In addition, the AD581UH/883B also features a low noise level of 0.9µVRMS and a wide input supply range from 2.7V to 16V. This makes it ideal for applications that require high accuracy and low noise. Furthermore, the device also has a wide output voltage range of 0.6V to 10V, making it suitable for a variety of different applications.

Finally, the AD581UH/883B is available in both SOT-23 and SOIC-8 packages. This makes it suitable for both low-profile designs and applications that require the use of larger packages. This makes the AD581UH/883B a versatile and reliable voltage reference for a variety of different applications.

In conclusion, the AD581UH/883B is a versatile and reliable low-power voltage reference that is suitable for battery-powered applications such as mobile phones and tablets as well as a variety of other applications. It has an ultra-low operating current and an excellent line and load regulation helping to ensure that the output voltage is accurate and stable. Furthermore, it comes in both SOT-23 and SOIC-8 packages, making it suitable for a variety of different applications. Thus, the AD581UH/883B is a great choice for any system or device needing a reliable and low-power voltage reference.

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