The INA300 is a high common-mode, current-sensing comparator

This post is sponsored by Texas Instruments.

The INA300 is a high common-mode, current-sensing comparator that is configured to detect overcurrent conditions through measuring the voltage developed across a current sensing or shunt resistor. 

The device can measure this differential voltage signal on common-mode voltages that can vary from 0 V up to 36 V, independent of the supply voltage. It features an adjustable threshold range that is set using a single external limit-setting resistor, and a selectable hysteresis feature enables adjustable operation of the comparator to accommodate the wide input signal range of 0 mV to 250 mV.

An open-drain alert output on the INA300 can be configured to operate in either a transparent mode, where the output status follows the input state, or in a latched mode, where the alert output is cleared when the latch is cleared. The device response time setting is selectable, which enables overcurrent alerts to be issued as quickly as 10 µs.

The INA300 operates from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 135 µA. It is specified over the extended operating temperature range (–40°C to +125°C), and is available in a QFN-10 package.

By: Rachel Kalina

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To download a datasheet, click here.

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