Miniature switching in the (magnetic) field

Patented spintronic GMR technology provides unmatched miniaturisation, sensitivity, precision and low power.

Rhopoint Components has a new giant magnetoresistive (GMR) digital switch that is designed to run at low voltages and extremely low currents.

The devices are manufactured using patented spintronic GMR technology for unmatched miniaturisation, sensitivity, precision and low power.

The output is configured as a magnetic "switch" where the output turns on when the magnetic field is applied, and turns off when the magnetic field is removed.

The IC is internally duty cycled at approximately 0.1% to conserve power.

An integrated latch ensures the output is available at all times.

The IC is available in a new ULLGA leadless package, which measures just 1.1 x 1.1 x 0.4mm.

The ADL0xx-14E parts are ideal for battery-powered devices such as gas and water meters, portable instruments, or any place where an extremely low power magnetic field sensor is required.

The applied magnetic field can be of either polarity, and with applied voltages of 3.6V or less, the part consumes less than 1uW.

The magnetic operate point is extremely stable over supply voltage and temperature variations.

The output is current-sinking, and can sink up to 100uA.

The product consists of a 0.6 x 0.6mm die containing a GMR sensor element, CMOS signal processing circuitry to convert the analogue sensor element output to a digital output, and an oscillator and timing circuit for duty cycling.

The plastic package is an ultrasmall ultra-low-profile surface-mount design to minimise board space.

The ICs are also available in die form for extremely space-critical applications.

Evaluation samples are available now from Rhopoint Components.

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