LT1461CIS8-3#PBF

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The LT1461CIS8-3#PBF is an 8-bit voltage reference designed to provide accuracy, low cost and low power performance. It belongs to a branch of PMIC (Power Management Integrated Circuit), more specifically Voltage Reference. This type of integrated circuit provides regulated voltage to external circuit, so that the output is held to a fixed value as the input voltage varies. Therefore, LT1461CIS8-3#PBF can be applied in many fields.

One field of application is automotive electronics, such as on-board diagnostics, engine management or infotainment systems. As these systems become increasingly complex, their performance is heavily dependent on power supply which is stable, consistent and reliable due to the volatile environment of a vehicle in motion. The LT1461CIS8-3#PBF offers power with low distortion, noise and long term stability, thus providing stable and dependable power supply to a complex system. Other fields of application include industrial control, instrumentation, test and measurement, medical, and any system that requires an accurate reference voltage.

In terms of working principle, the LT1461CIS8-3#PBF utilizes a simple potentiometer and current-mirror based architecture to achieve its accuracy and performance. It features an external 8-bit digital control word, that is digitally adjustable up to ±3% with 0.5% resolution. An internal reference voltage is set by the control word and is compared with the external input, allowing the circuitry to output a voltage relative to this reference voltage. This voltage is then kept stable using a high-gain, low frequency, error-amplifier. A circuit, consisting of a CMOS switch and current mirrors, is also added to address the power consumption issue, by only allow current flow when the device needs adjusting.

In summary, the LT1461CIS8-3#PBF is an 8-bit Voltage Reference integrated circuit from PMIC family, offering low cost and low power performance. It can be used in a variety of applications, including automotive electronics, industrial control, instrumentation, test and measurement, and medical, requiring a reliable and accurate reference voltage. It achieves this performance by utilizing a potentiometer, a high-gain, low frequency error-amplifier, a current-mirror based system and other circuitry.

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