TSM931CSA+T

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The TSM931CSA+T is a 2.5 V precision low-power, low-offset, low-drift, CMOS dual comparator. It is a part of Linear - Comparators. This device comes in the standard SOT23-5 package, yet offers many features that are key to precision applications. The comparators are pin compatible with other single-supply precision CMOS comparators with features such as low offset, low drift and high power supply rejection ration.

The TSM931CSA+T was designed for a wide range of applications where accuracy and reliability are essential. Due to its low-power operation and excellent power supply-rejection ratio, it is an ideal choice for precision instrumentation, sensor interfacing, precision medical and automotive applications, as well as general purpose analog to digital conversion and signal processing. The amount of power dissipated by the comparator is quite low, so it can be used with low-cost and low-noise power sources.

The working principle of the TSM931CSA+T comparator is based on an Input differential amplifier whose output is connected to a latch. A reference voltage (of typically 0.5V) is applied to the non-inverting input to compare the voltage of the inverting input, whose voltage is adjusted by an external resistance. If the voltage of the non-inverting input rises more than that of the inverting input, the output of the latche will change state to reflect the difference (HIGH). Similarly, a drop in the inverting input voltage relative to the non-inverting input voltage will result in a LOW output at the latch.

The TSM931CSA+T features two independent comparator circuits sharing a common power supply. Each comparator can be powered with a single 2.5V supply or a dual 0.8V supply, with minimal power consumption. The comparator can be operated with a low input voltage bias current and can be disabled to reduce power consumption. The output of the comparator is an open-drain with an active-high signal polarity, making it compatible with most logic families. The supply voltage is internally clamped at 2.5V to protect against over-voltage, and it is ESD protected on the input pins.

In summary, the TSM931CSA+T is a high-performance, low-power comparator from the Linear - Comparators category, ideal for precision applications such as instrumentation, automotive, and medical. Its low input bias current, low-offset, and low-power operation make it ideal for low-cost and low-noise power sources. Additionally, its open-drain output and large power supply rejection ratio make it compatible with most logic families. The TSM931CSA+T is powered by a single 2.5V supply or a dual 0.8V supply, and is protected against ESD.

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