MAX975EUA

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MAX975EUA is a type of linear-comparators, designed to provide voltage translation and analog comparator functions with performance far superior to those available with discrete components. By incorporating the MAX975EUA into end products, engineers can significantly reduce power dissipation, dramatically reduce circuit size, and simplify layout.

Application Field

The MAX975EUA finds applications in high-speed data conversion, analog input protection, automation and drive circuits, software controllable analog switches, and voltage-controlled oscillators—all requiring low cost precision comparative functions.

Working Principle

The MAX975EUA is a high-speed bipolar type of comparator with a TTL/CMOS compatible output. It features a unique rail-to-rail input stage that makes it suitable for applications with wide input voltage swings. The output can drive both TTL and CMOS inputs with no visibile glitch and is in response to both falling and rising inputs. The MAX975EUA has single-supply operation and eliminates the need for dual supplies.

The circuit principle of MAX975EUA is that the differential input directly drives the current mirror circuit. The current mirror is composed of PMOS and NMOS transistors. The mirror source and the output are connected to each other, so the mirror source has the same voltage as the output. Then, the current of the mirror source will drive the output to the "high" or "low" logic level output.

The design of the MAX975EUA also incorporates a compensation circuit consisting of a series connected transistor, resistor, and offset adjustment capacitor to improve accuracy and stability. This compensation allows for wide operating temperature range with minimum drift; typically the MAX975EUA is accurate to less than 0.1mV.

The MAX975EUA with its low cost and superior performance makes it an excellent solution for people seeking reliable and high-speed comparator with minimal power consumption. Its versatile functionality regarding voltage translation and analog comparator functions, can serve as a great replacement to traditional discrete components.

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