Electronics Weekly
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.
With an output of 1A/kA, linearity can be as good as ±0.0002%, claimed the company, while stability is up to 0.1ppm/month.
The other new part is also in the IN family, and the fastest in that family: IN 1000-SHF has a 2.5MHz ±3dB bandwidth and a 1ns delay time at 10% of nominal current – “that’s a thousand times quicker than the IN 1000-S model and over five times the bandwidth”, said LEM.
Offset is ±5ppm at +25°C and drift is said to be ±0.1ppm/°C over -40 to+85°C.
Noise is 218ppb p-p “more than 82 times better than the IN 1000-S”, said LEM.
A LED is included to indicate normal operation, as does an electrical output.
Inside both sensors is the company’s FPGA-based take on flux-gate technology.
“Fluxgate technology has limitations linked to a ripple that stems from the excitation voltage,” it said. “LEM’s [is] through digital technology, gaining not only a major reduction of ripple from the fluxgate driving signal, but significantly improving immunity to temperature effects, interference and supply voltage variation.”
The devices are UL/UR certified, and are expected to be used in MRI scanners, calibration units, power meters and energy measurement.
See the new parts at PCIM in Nurember next month: 6 – 8 May 2025, hall 9 stand 202.
At the other end of the current scale, Allegro recently introduced a couple of current sensor ICs
