Omnipolar digital hall-effect sensor ICs operate from 2.2Vdc

Omnipolar digital hall-effect sensor ICs operate from 2.2Vdc

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By eeNews Europe

The product is available in two duty cycle configurations to accommodate a variety of low-power applications. The SL353HT features a high duty cycle (13% typical) and low current drain (0.33mA typical, 2.8Vdc typical) for use in energy-efficient products requiring higher switching frequencies.

The SL353LT features a very low duty cycle (0.013% typical) and ultra-low current drain (1.8µA typical,  2.8Vdc typical) resulting in extended battery life for use in battery-operated, mobile applications. Built-in timing circuitry in the SL353 Series turns the power to the IC on for a very short time, it is off for the balance of the period, significantly reducing the average current consumption.

The push-pull output does not require an external pull-up resistor, which simplifies interface with common electrical circuits and potentially reduces PC board space and costs to the customer. The non-chopper stabilized design means that no filter is needed to compensate for the noise generated by this technique, helping to reduce PC board space, part counts, and application costs.

The balanced integrated circuit provides stable operation over a wide temperature range of -40 to 85°C. Because these sensors can be operated by a North pole or a South pole, they do not require the magnet polarity to be identified, allowing easier installation and potentially reducing system costs.

The SOT-23 sub-miniature package size requires less PC board space, allowing for use in smaller assemblies. These sensors are supplied on tape and reel which allows for a compact design with automated component placement, helping to reduce manufacturing costs.

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