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Current sensing

using the ZXCT10XX

Current sensing
Measuring high-side current becomes a piece of cake when you use the ZXCT10xx range of devices from Zetex. The chips can produce a proportional output voltage referenced to ground by sensing current through a userdefined shunt resistor.
The semiconductor manufacturer Zetex has recently introduced a new family of current sensing ICs. These devices operate from a wide supply voltage range between + 2.5 to 20 V and can be used in many applications including overload protection, battery chargers, cooling fan current monitoring or switch-on surge limiting. The four variants perform the same function but have different output characteristics; the measured current can be output as a scaled current or voltage and one variant has an inbuilt comparator.
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