AS1976-T

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Linear-comparators are devices that are used to compare an input signal with a reference signal, detecting when the two signals match or mismatch. The AS1976-T is a low-power, low voltage, CMOS comparator designed to work in battery and single-supply applications. This document will discuss the application field and working principle of the AS1976-T linear comparator.

The AS1976-T is often used in battery-powered applications such as portable medical and fitness devices, handheld gaming systems, remote control applications, and portable industrial instrumentation. With its low power consumption, the AS1976-T can be used in designs to help conserve battery power and extend battery life. It is highly suitable for use in low voltage, single-supply applications thanks to its low-power low-voltage CMOS design.

The AS1976-T has two digital output, a VIN and a VIN bar. When the non-inverting input voltage is higher than the inverting voltage, the VIN is HIGH, and is LOW when the inverting voltage is greater than non-inverting voltage. The VIN bar is opposite of the VIN; when VIN is HIGH, VIN bar is LOW, and when VIN is LOW, VIN bar is HIGH. This allows the user to measure relative differences between two voltages.

The AS1976-T’s further advantages include its level-shifting capabilities, allowing the user to measure voltages up to 5.5V with a 3V supply. It also has an adjustable output logic level push-pull or open-drain, and an over-temperature shutdown function for protection. Its working temperature range is from -40C to +85C. It also has an adjustable hysteresis voltage, small package size, as well as very low current consumption, making it suitable for use in low power applications.

In terms of its operation logic, when non-inverting input is higher than inverting voltage, the logic output is HIGH, when inverting voltage is higher than non-inverting input, the logic output is LOW. When they are equal, the logic output goes to the level that was established before the input voltage arrived.

In summary, the AS1976-T linear comparator is an ideal choice for applications that require low-power low-voltage operation, level shifting, adjustable output logic levels, and adjustable hysteresis. With its wide operating temperature range, low power consumption, and adjustable features, the AS1976-T can meet any demands of modern battery powered designs.

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