详细信息
FEATURES
* Small size (.160 x .118 in)
* Power consumption of 7 mA
at 5 VDC for energy
efficiency
* Single current sinking or
current sourcing output
* Linear output for circuit
design flexibility
* Built-in thin film resistors are
laser trimmed for precise
sensitivity and temperature The SS490 Series MRL (Miniature Ratiometric Linear) sensors are small,
compensation versatile linear Hall effect devices which are operated by the magnetic field
* Rail-to-rail operation from a permanent magnet or an electromagnet. The ratiometric output
provides more useable voltage is set by the supply voltage and varies in proportion to the strength
signal for higher accuracy of the magnetic field.
* Temperature range of -40°C The integrated circuitry provides increased temperature stability and
to +150°C sensitivity. Laser trimmed thin film resistors provide high accuracy (null to ±
* Responds to either positive 3%, sensitivity up to ±3%) and temperature compensation. These linear
or negative gauss position sensors have an operating temperature range of -40C to +150°C,
* Quad Hall sensing element appropriate for industrial and automotive environments. They respond to
for stable output either positive or negative gauss, monitoring either or both magnetic poles.
The quad Hall sensing element minimizes the effects of mechanical or
TYPICAL APPLICATIONS thermal stress on the output. The positive temperature coefficient of the
* Current sensing sensitivity (+0.02%/°C typical) helps compensate for the negative
* Motor control temperature coefficients of low cost magnets, providing a robust design
* Position sensing over a wide temperature range. Rail-to-rail operation (over full voltage
* Magnetic code reading range) provides a more usable signal for higher accuracy.
* Rotary encoder The recent extension to the product line, the SS490B Series, offers cost-
* Ferrous metal detector effective MRL sensing solutions with slightly wider specifications than the
* Vibration sensing SS490 high-performance products. Like the SS490 Series, the SS490B
* Liquid level sensing has a typical sinking or sourcing output of 1.5 mA continuous, uses 7 mA of
* Weight sensing supply current at 5.0 volts and 25C, and provides predictable performance
over the full temperature range. The SS490B Series sensors have wider
WARNING null and sensitivity tolerances and a wider drift over temperature.
PERSONAL INJURY The SS490B Series sensors are a new lower cost product line extension.
* DO NOT USE these They complement the SS490 Series of small size, high accuracy and high
products as safety or performance miniature linear products.