Crocus Technology CT43X Current Sensor

Crocus Technology’s CT43x (CT430 = 5V and CT431 = 3.3V) are 1 MHz bandwidth and ultra-low noise integrated contact current sensors that deliver <1% total error over the full temperature range. The high-speed operation and accurate output allow customers to optimize system design for smaller size and higher efficiency. In contrast to existing designs that utilize a hall-based current sensor, the XtremeSense® TMR current sensor enables a no-compromise design solution by combining high bandwidth, fast response time and high accuracy.

These coreless devices utilize Crocus’ state-of-the-art XtremeSense® TMR technology to detect extremely small variations in AC or DC currents while achieving an unprecedented total output error of less than 1.0% over the full temperature range. In addition, they have robust built-in immunity to common-mode fields which allows the device to reject >99% of stray fields without the need for external shielding.  The Crocus proprietary TMR technology inherently offers very high signal-to-noise ratio (SNR) which allow for high-resolution measurements required for precision control or monitoring applications. Crocus TMR current sensors have an initial accuracy that exceeds the performance of competing Hall Effect current sensor products that require external compensation or calibration. This enables the use of a lower cost single-ended ADC input compared to competing solutions that require a higher cost differential ADC input or increased computing time.