*The SS490 Series MRL (Miniature Ratiometric Linear) sensors are small,
*versatile linear Hall effect devices which are operated by the magnetic field
* from a permanent magnet or an electromagnet. The ratiometric output
* voltage is set by the supply voltage and varies in proportion to the strength
* of the magnetic field.
*The integrated circuitry provides increased temperature stability and
* sensitivity. Laser trimmed thin film resistors provide high accuracy (null to ±
* 3%, sensitivity up to ±3%) and temperature compensation. These linear
* position sensors have an operating temperature range of -40C to +150°C,
* appropriate for industrial and automotive environments. They respond to
* either positive or negative gauss, monitoring either or both magnetic poles.
* The quad Hall sensing element minimizes the effects of mechanical or
* thermal stress on the output. The positive temperature coefficient of the
* sensitivity (+0.02%/°C typical) helps compensate for the negative
*temperature coefficients of low cost magnets, providing a robust design
* over a wide temperature range. Rail-to-rail operation (over full voltage
* range) provides a more usable signal for higher accuracy.
* The recent extension to the product line, the SS490B Series, offers cost-
* effective MRL sensing solutions with slightly wider specifications than the
* SS490 high-performance products. Like the SS490 Series, the SS490B
* has a typical sinking or sourcing output of 1.5 mA continuous, uses 7 mA of
* supply current at 5.0 volts and 25C, and provides predictable performance
over the full temperature range. The SS490B Series sensors have wider
null and sensitivity tolerances and a wider drift over temperature.
The SS490B Series sensors are a new lower cost product line extension.
* They complement the SS490 Series of small size, high accuracy and high
performance miniature linear products. |
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