ISL28197FHZ-T7

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Linear - Comparators are dedicated devices whose sole purpose is to compare two analog voltages and then signal the result of the comparison. ISL28197FHZ-T7 is a high speed CMOS comparator which is designed for a variety of applications. This device extends the performance range of single and dual supply comparators by providing lower power, higher speeds, and lower propagation delay. ISL28197FHZ-T7 is available in a tiny 3 x 3mm SOT-23 package to enable an ultra-small and low-cost solution.

ISL28197FHZ-T7 Application Field

ISL28197FHZ-T7 is versatile, accurate and fast, and has been specifically designed for applications that require fast switching times, including: time-to-digital converters, thermometer decoders, zero-crossing detectors, peak and valley detectors, over-voltage/over-current trip detection and event-counter applications. Its features make it suitable for a wide range of applications, including: power and energy management, Industrial and robotics, audio and video systems, telecom, automotive, mass storage and consumer electronics.

ISL28197FHZ-T7 Working Principle

The working principle of the ISL28197FHZ-T7 is simple. It takes two analog voltages as input, compares them and outputs a signal indicating if the first voltage is higher or lower than the second voltage. The comparator is composed of two parts, the differential amplifier and the output stage. The differential amplifier amplifies the difference between the two input voltages. The output stage compares the amplified signals and outputs either an high or low logic level depending on the result of the comparison.

The ISL28197FHZ-T7, compared to the traditional comparators, has the ability to switch faster. The switching speed is achieved by the high speed rail-to-rail input stages, which provide wider common mode range, a high common mode rejection ratio, and low distortion on the output. Additionally, it uses proprietary auto-zero technology, which reduces the propagation delay to a minimum. ISL28197FHZ-T7 is designed for a dual power supply, ranging from 1.4V to 12V and it has an output drive of up to 3mA.

Conclusion

ISL28197FHZ-T7 is a precise, powerful and reliable high speed CMOS comparator ideal for applications in which the precise comparison of input signals is required. Its low power consumption, high speed, wide common mode voltage range and low distortion on the output make it suitable for power and energy management, automotive, consumer electronics and many other applications. Its features make it one of the most sought after comparators in the market today.

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