Industry-First TMR Zero-Loss, Miniature-Size Current Sensor


The XtremeSense TMR-based CT220 contactless current sensor enables high isolation, high-resolution and high accuracy measurements for power monitoring….

Crocus Technology Inc., announces the CT220, a contactless current sensor, with high linearity, high-resolution, a wide dynamic range in a small form-factor targeted for multitude of current sensing applications. The CT220 is the newest member of Crocus’ current sensing product family joining the CT110 and CT100.

The CT220 is powered by Crocus’s patented XtremeSense TMR 1D technology which enables it to detect the slightest change in AC or DC current while maintaining a best-in-class 0.5% typical total output error. The CT220 is able to detect currents as low as 5 mA to over a thousand Amperes within a 1.5 mT to 15 mT operating magnetic field range. The CT220 consumes about 1.2 mA and has a sampling frequency of 200 kHz. It also has a ratio-metric analog output capable of supporting a supply voltage range of 2.7 V to 5.5 V.

“The coreless and contactless CT220 simply enables a multitude of applications including solar and power inverters, power supplies, battery management systems, white goods, industrial appliances, and power distribution units (PDUs). It is an ideal replacement for bulky current transformers, low sensitivity and low resolution Hall-based current sensors, and shunt-based applications where isolation and temperature stability are required,” said Zack Deiri, President and CEO of Crocus Technology.

The CT220 is available in a 5-lead SOT23 package. Samples and evaluation boards are currently available, and it will be in production in September 2020.

For more information, please visit Crocus Technology.