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Precision op amps are aimed at IoT On Semiconductor (Phoenix, Arizona) has introduced a family of “zero-drift” low-voltage CMOS precision operational amplifiers, for use as front-end amplifiers and in power management. The NCS325 and NCS333 are suitable for use in precision applications in industrial, consumer, wireless and the Internet of Things (IoT) where strong stability across wide operating temperature ranges is mandated. These devices are complemented by the NCV333 automotive-qualified (AEC-Q100 grade 1) op amp offering similar functional performance for power train, braking, electronic power steering, valve controls, fuel pump and fuel injection system applications. Featuring high DC precision parameters, such as the 10 microvolts maximum input offset voltage at ambient temperature and the 30 nV/°C of offset temperature drift, make these amplifier devices extremely well optimized for low side current sensing and voltage differential measurement on front-end sensor functions. Minimal voltage variations over temperature along with close to zero offset ensure the efficiency of systems exposed to wide operating temperature ranges without the need for complex software calibration algorithms. On Semiconductor www.onsemi.com High-accuracy, adjustable, dynamic power limiters Maxim has posted data sheets for a series of dynamic power limiters with thermal controlled current foldback, describing them as the first parts available with this combination of features MAX14721– MAX14723 areadjustable overvoltage, undervoltage, and overcurrent protection devices that guard systems against overcurrent faults in addition to positive overvoltage and reverse-voltage faults. When used with an optional external p-channel MOSFET, the devices also protect downstream circuitry from voltage faults up to ±60V. The MAX14721– MAX14723 embody a 76-mΩ on-resistance integrated FET. During startup, the devices are designed to charge large capacitances on the output in a continuous mode for applications where large reservoir capacitors are used on the inputs to downstream devices. The devices feature a dual-stage, current-limit mode in which the current is continuously limited to 1x, 1.5x, and 2x the programmed limit, respectively, for a short time after startup. Maxim Integrated www.maximintegrated.com wweww1.5e_1le90cxt1r3o6_nEiEc_sT-imeees_tEimuroepse..icndod m 1 Electronic Engineering Times Europe January13 2.100.1145 1 03:172


EETE JAN 2015
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