LT1634BIS8-2.5

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PMIC (Power Management Integrated Circuit) is a very important element in today\'s complex electronics applications. Voltage references are part of this, providing a consistent voltage source for all components of a circuit or system. The LT1634BIS8-2.5, a positive voltage reference from Linear Technology, is an example of such a reference device.

The LT1634BIS8-2.5 is an 8-pin voltage reference IC and is capable of sources up to 2.5W and as low as 1.3V. Its wide tolerance range of ±0.1V and low temperature coefficient of ±25ppm/°C make it suitable for applications in analog to digital converters, RF amplifiers and any other precision electronics where a stable and adjustable reference is needed.

The working principle of the LT1634BIS8-2.5 is based on two operational amplifiers, connected in a negative feedback topology.¹ The input of the first opamp is connected to a voltage reference, called V_REF, and its output is connected to a voltage divider consisting of two resistors. The output of the second opamp is connected to the voltage divider\'s mid point; its output is then the reference voltage of the IC, the stability of which is influenced only by the stability of the V_REF and the resistors in the voltage divider.

The operating temperature range of the LT1634BIS8-2.5 is -40°C to +85°C, making it suitable for a variety of industrial applications. The input voltage range of 2.5V to 16V makes it ideal for use in systems that use multiple voltage sources or a wide input voltage range. It also consumes a very low quiescent current of just 15µA, making it highly efficient and suitable for use in battery powered electronic systems.

The LT1634BIS8-2.5 is an excellent choice for precise voltage references, its wide range of features and extensive knowledge base make it suitable for many different applications. It is well suited for high-reliability applications, being SMD compatible, flame retardant and available in both standard and custom packages. Its low temperature coefficient and wide tolerance accuracy make it a good choice for many analog-to-digital converters, as well as power supplies, battery management systems and a variety of precision electronics.

In conclusion, the LT1634BIS8-2.5 is a versatile and reliable voltage reference, suitable for a wide range of applications. Its low quiescent current and high efficiency make it an excellent choice for systems running on multiple power sources. With its wide range of features, it is an ideal choice for any project requiring high reliability and precision voltage references.

¹ This is called a "two-opamp bandgap reference" (TOBGR) circuit.

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