Maxim Integrated MAX921CSA+ Low-Power, High-Speed Single-Supply Comparators

The MAX921CSA+ from Maxim Integrated is a high-performance, low-power comparator designed for systems where efficiency and speed are critical. This device is ideal for battery-powered applications due to its low power consumption and operates from a single +2.5V to +11V supply or from dual ±1.25V to ±5.5V supplies.

Featuring a proprietary design, the MAX921CSA+ offers a fast propagation delay of just 240ns while consuming minimal power, with supply current as low as 4µA. These characteristics make the MAX921CSA+ an excellent choice for portable devices, where extending battery life without compromising on speed is essential.

The comparator is housed in a compact 8-pin SOIC package, making it suitable for space-constrained applications. Its small footprint does not come at the expense of functionality, as the MAX921CSA+ includes an internal 1.182V ±1% reference, which allows threshold-setting with a minimum number of external components, thus simplifying design and reducing overall system cost.

With its wide input common-mode voltage range that extends from the negative supply rail to within 1.3V of the positive supply, the MAX921CSA+ provides designers with greater flexibility in various applications. This feature, combined with its high input impedance, makes it easy to interface with other components in the system.

The MAX921CSA+ also features a unique output stage that sinks current, allowing for quick discharge of capacitive loads such as sample-and-hold capacitors. This makes it particularly useful in analog-to-digital conversion applications or any application requiring a fast comparator to drive digital logic levels.

With its combination of high speed, low power consumption, internal voltage reference, and single-supply operation, the MAX921CSA+ is a versatile component suitable for a wide range of applications including threshold detection, window comparators, line receivers, and many more in the industrial, telecommunications, consumer electronics, and medical device sectors.

Maxim Integrated's commitment to quality ensures that the MAX921CSA+ is a reliable and high-performing addition to any electronic system design.