LT1461AIS8-2.5#PBF

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A voltage reference, such as the LT1461AIS8-2.5#PBF, is an integrated circuit used to provide a stable reference voltage that is immune to input signal variations. Voltage references are components of PMICs (Power Management ICs) and are important for maintaining voltage levels when multiple signal traces or signal types are in close proximity to each other. Voltage references also provide a standardized and reliable voltage output for comparison and measurement of other voltages.

The LT1461AIS8-2.5#PBF is an Adjustable, Programmable or Non-Programmable Voltage Reference device for use in high performance systems, as well as low power battery applications. It is a precision four-terminal band-gap voltage reference, providing an output voltage range of 1.25V to 5.25V with a typical temperature coefficient of 25 ppm/°C. The device is offered in 8-lead DFN, 8-lead PDIP, and 8-lead SOIC packages, and has a maximum output current of 5mA. Moreover, the LT1461AIS8-2.5#PBF is capable of regulating the output voltage in the presence of changes in load current and temperature.

It operates on a wide supply range of 2.7V to 5.5V, and is designed to provide high accuracy despite wide line and load variations. It also has low powering quiescent current of less than 20μA, and outstanding accuracy of 2.5mV and temperature coefficient of 25ppm/°C. The device has low temperature drift and low long-term voltage stability, making it suitable for applications requiring long-term stability.

The LT1461AIS8-2.5#PBF can be used in various applications. It is a suitable voltage reference for global navigation systems, network switching equipment, motor controllers, meters, medical instruments, digital and analog circuits, automotive and aerospace applications, and industrial systems. The device is also ideal for microprocessor-controlled systems and devices, such as digital Pbx, computer-based digital and analog systems, and embedded microcontroller applications. The LT1461AIS8-2.5#PBF can also be used in digital designers and developers who require reliable and accurate voltage regulation in their products.

The LT1461AIS8-2.5#PBF also features a wide operating temperature range, from -40°C to 125°C, and is designed to provide consistent results over its entire temperature range. Additionally, it has low power-on start-up, fast settling, and low initial accuracy so that the user can get quick and accurate results with the minimum of calibration. Furthermore, the device has low radio frequency noise, making it ideal for RF applications.

The basic working principle of the LT1461AIS8-2.5#PBF is quite simple. It is basically composed of two voltage sources: a reference voltage source and a comparator. The reference voltage source is an internal circuit that considers different factors like temperature, load current, input voltage, etc. The reference voltage is set to the required steady output voltage by a resistor divider circuit. The comparator then compares the reference voltage to the output voltage, and it adjusts the output voltage accordingly to make sure it remains within acceptable limits.

In summary, voltage references such as the LT1461AIS8-2.5#PBF are components of PMICs (Power Management ICs) used to provide a stable reference voltage that is immune to input signal variations. It offers a wide supply range of 2.7V to 5.5V and an output voltage range of 1.25V to 5.25V. Its low powering quiescent current, high accuracy, low temperature drift, low long-term voltage stability, and wide operating temperature range make it a versatile and reliable voltage reference for various applications.

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