current

Rohm has created a set of six current sense amplifiers with AEC-Q100 qualification for automotive use. They work with external shunt resistors, and there are two basic types: one (BD1423xFVJ-C) that can sense across the common-mode range of -14 to +80V and runs from 2.7 to 18V, and the other (BD1422xG-C) that can sense across -14 to +40V and runs ...

Rhopoint Components is stocking precision current sensing resistors from VPG Foil Resistors. The 1W surface-mount RBF series measures 6.3 x 3.2mm and offers resistances between 0.01Ω and 1Ω. Tolerances down to 0.5% are available between 0.1 and 1Ω, or down to 1% from 10mΩ to 100mΩ. All the series are available with a temperature coefficient of ±25ppm/°C between -25 and ...

LEM had introduced two fast precision high current sensors for ac, dc and pulsed currents: a 2MHz 1,500A type and 1ns 1,000A type. IN 1500-S is for measuring up to 1.5kA across a 2MHz (±3dB) bandwidth and -40 to +50°C temperature – which is less than the -40°C and +85°C that the rest of the IN family is rated across. ...

Allegro MicroSystems today announced three ICs: two analogue current sensors and a motor driver for fans. The first current sensor, ACS37630, is designed to be sat on top of a bus bar and partly surrounded by a U-core magnetic field concentrator. “Its vertical Hall technology enables sensing parallel to the package surface, ideal for system integration with U-core magnets,” according ...

STMicroelectronics has introduced a 2.1MHz bandwidth low-side current-measurement amplifier in a 6-lead SOT23 pacakge. Dubbed TSC1801, it is aimed at motor control, solar power and automotive power conditioning. “The amplifier’s fast response allows pulse-by-pulse current control even in very high-frequency power-management systems,” according to the company, as well as “rapid over-current detection, protecting sensitive output-stage components against being damaged in ...

Melexis has announced a magnetism-based current sensor that needs no ferromagnetic core, for measuring currents through power PCBs and busbars (see diagram). MLX91235 is gradiometric, taking a differential magnetic field measurement with two internal sensing elements “ensuring stray field effects are eliminated”, according to the company. It is aimed at automotive and other e-mobility applications and, as such, has been ...

Lake Shore Cryotronics is aiming at the characterisation of 2D and nano electronic devices with a source measure unit capable of resolving 3nV and 1fA. A source measurement unit is essentially a four-quadrant power supply with in-built voltage and current measurement. “As traditional materials-based semiconductor devices continue to shrink and operate at ever-lower signal levels, engineers find it more difficult ...

Novosense Microelectronics has announced a series of automotive-grade IC current sensors with 5kVrms isolation (UL) between the current path and sensing circuitry. Certification is AEC-Q100 Grade 0. The NSM211x series is fast, with a 1MHz -3dB bandwidth and 400ns response time. It comes in three packaging options: SOP8, SOW16 and SOW10. Read our full Electronica 2024 coverage » Only the ...

Fluke once again has solar power engineers in mind with a pair of instruments, both true-RMS, CAT III and rated to 1,500V: the 283 FC digital multimeter and the a283 FC wireless ac and dc current clamp. These follow on from April’s PVA-1500HE2 and 1,500V 30A solar installation analyser and I-V curve tracer, and its less capable PVA-1500T2 cousin. “With ...

LEM is aiming at electric vehicle state-of-charge estimation with a ±1.5kA current sensor. To be called the SMU series and designed to be built into the ‘battery disconnect unit’, the sensors “reach 1% of accuracy up to 1,300A and <1.7% up to 1,500A”, according to the company. The units measure 29.1 x 35.5 x 49.9mm, plus the dimensions of the ...