Claimed to be the first integrated current sensor to offer a sigma delta bitstream output, the HMSR DA will be introduced by LEM at PCIM Europe (10 - 12 May). It is the latest addition to the HMSR family and provides significant benefits when used in applications that are prone to noise, distortion and interference, says the company.

 It has been designed for use where clean signals are required and where vibrations, electric noise and electromagnetic noise will cause significant problems.

The integrated current sensor with digital output offers superior signal share and reduced noise as well as lower cost and a smaller mechanical footprint, claims the company. It will replace complex and expensive systems that would traditionally include a shunt resistor, a digital insulator and a power supply circuit. All of these features are integrated into the single device which is a particular benefit when space is at a premium and minimal cost is essential.

Typical applications for the digital output unit include automated guided vehicles (AGVs), robotics, standalone servo drives, CNC machine tools and any applications that demand high resolution output. The HMSR DA sensor offers resolution of 11 to 13 bits and features a 10MHz clock. It is, says LEM, the first in many integrated circuit sensors; the company says it is already working on sensors which will offer a resolution of 14 to 16 bits and a clock operating above 20MHz.

The HMSR family measures DC and AC currents in highly demanding switching power applications for the commercial and industrial sectors. The HMSR DA digital integrated circuit sensor will enable engineers to look at new ways of formulating a system design, using the sigma delta bitstream output and the application of filters to adapt the sensor to their specific needs.

Visit LEM at PCIM 2022   Hall 9 - 202