MAX988EXK+T

The MAX988EXK+T combines an analog switch (SPST) and a push-pull output amplifier into a small, 8-pin SOT23 package making this device an attractive solution for a wide range of applications. It belongs to the Linear - Comparators category. Specifically, the MAX988EXK+T is a compare/switching circuit based on a high-speed rail-to-rail differential input comparator and can operate with single supply. It provides an integrated precision reference, allowing +2.5V operation with an external 4.096V reference, or can operate with larger supplies with lower reference voltages.

The MAX988EXK+T integrates precision CMOS switches, which support high data rates up to +2.5V and provide low distortion, low crosstalk, and low total harmonic distortion. The on-chip driver can drive capacitive loads with its CMOS output stage. It also has an adjustable hysteresis which allows easy threshold detection applications. Furthermore, the MAX988EXK+T has a power-down mode that operates below 0.5μA.

The MAX988EXK+T application field includes precision level detection and hysteresis control, temperature sensing, sensing of current levels, voltage offset, voltage window comparators, noise, glitch and spike detection, delta-sigma converters, touchscreens, and analog-digital interface. It also serves in data acquisition systems, general-purpose comparators, and loop regulation.

The working principle of the MAX988EXK+T is based on its integrated differential input foward-type comparator. This comparator compares the voltages placed at A and B with a 1.24V internal threshold and switches its output depending on which voltage is higher. The device also has an adjustable hysteresis which is variable up to 500mV. This means that the output will not switch until the voltage differential between A and B exceeds the selected threshold. An external reference also allows more control over the switching thresholds.

The CMOS output stage of the MAX988EXK+T allows driving of capacitive loads up to 20pF and provides a low output impedance for driving a wide range of external devices and circuits. In addition, an open-drain output configuration and a power-down mode enable additional system design flexibility.

In summary, the MAX988EXK+T is a precision switching circuit based on a rail-to-rail differential input comparator. Its integrated precision reference, adjustable hysteresis, CMOS output stage, and low quiescent current make it an attractive choice for a wide range of applications such as data acquisition systems, level detection, temperature sensing, and digital-to-analog interface.