ACEINNA’s MCx1101 family of current sensors now supports 3.3V applications, making the AMR-based current sensors viable for a wide range of ADC and microprocessor-based power systems and applications. According to the company, the bi-directional current sensors boast a much higher DC accuracy and dynamic range compared with similar components. For example, the ±20A version has a typical accuracy of ±0.6% and are guaranteed to achieve an accuracy of ±2.0% (max) at 85°C.
The enhanced current sensors are available in SOIC-16 packages with an impedance of 0.9 mΩ and are certified by UL/IEC/EN for isolated applications. They guarantee an offset of ±60 mA, or ±0.3% of FSR (max) over temperature, which means that high accuracy can be achieved over a roughly 10:1 range of currents. Other features include a 1.5 MHz signal bandwidth, 4.8-kV isolation, and an output step response time of 0.3 µs.
The family includes ±50A, ±20A, and ±5A ranges and is offered in both fixed gain (MCA1101) and ratiometric gain (MCR1101) versions. For more details, datasheets are available.