ADCMP391ARZ

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The ADCMP391ARZ is a precision linear-comparator integrated circuit developed by Analog Device Corporation. This part is designed specifically for applications requiring an improved high-speed and low-power consuming comparator with low-input offset voltage. The ADCMP391ARZ is available with a two-terminal, open-drain output which can be used to drive logic levels. Its output stage is in the off condition (Low) when the positive input terminal is less than the negative input terminal, and goes in the on condition (High) when the positive input terminal is greater than the negative input terminal.

The ADCMP391ARZ operates from a single 5.0V supply. It offers fast power-on response with large dynamic outputs and very low current consumption. This part features low input bias current, low input offset voltage, fast output settling time, low power supply rejection ratio and low noise. This part has an open-drain output and offers excellent noise immunity.

The ADCMP391ARZ is suitable for applications such as threshold detection, pulse testing, sensor interfaces, and proportional amplifiers. It can be used to protect sensitive integrated circuits from transients such as ESD (electrostatic discharge), as well as to provide noise immunity and over-voltage/over-current protection. It can also be used as a voltage detector in precision current sensing, over-voltage/over-current protection, data acquisition, and motor control systems.

In the ADCMP391ARZ, the amplifier is designed to balance two voltage levels, V1 and V2. When V1 is greater than V2, the output of the amplifier is high and when V1 is less than V2, the output is low. This part can detect voltages above and below a given threshold as low as 0.3V. Furthermore, the part has a wide temperature range from -40°C to +125°C and also has a wide transistor output driving capability up to 54mA.

The ADCMP391ARZ has a current consumption of 12uA per comparator in the active mode. In the shut-down mode, the current consumption is reduced down to less than 0.08uA. The wide supply voltage capabilities allow the part to provide a higher level of isolated output accuracy. The unique enabling pin protects the input stage from any device damage due to a sudden increase in input voltages up to the maximum rated voltage.

The ADCMP391ARZ is a valuable device for many applications which require the detection of voltage levels above and below a given threshold. Its wide temperature range, wide supply voltage range, and high speed response make this the ideal choice for many precision applications. Its low current consumption makes it suitable for applications in battery-powered applications. The ability to protect the input stage from any device damage due to a sudden increase in input voltages also makes this part desirable for many designs.

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