Solid State Hall Effect Sensors
High Performance Miniature Ratiometric Linear
FEATURES
• Small size (.160 x .118 in)
• Power consumption of 7 mA
• Single current sinking or
• Linear output for circuit
• Built-in thin film resistors are
• Rail-to-rail operation
• Temperature range of -40°C
• Responds to either positive
• Quad Hall sensing element
TYPICAL APPLICATIONS
• Current sensing
• Motor control
• Position sensing
• Magnetic code reading
• Rotary encoder
• Ferrous metal detector
• Vibration sensing
• Liquid level sensing
• Weight sensing
PERSONAL INJURY
• DO NOT USE these
Failure to comply with these
instructions could result in
death or serious injury.
Sensing and Control
at 5 VDC for energy
efficiency
current sourcing output
design flexibility
laser trimmed for precise
sensitivity and temperature
compensation
provides more useable
signal for higher accuracy
to +150°C
or negative gauss
for stable output
products as safety or
emergency stop devices, or
in any other application
where failure of the product
could result in personal
injury.
WARNING
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.
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.
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.
They complement the SS490 Series of small size, high accuracy and high
performance miniature linear products.
MISUSE OF DOCUMENTATION
• The information presented in this product sheet is for reference only.
• Complete installation, operation, and maintenance information is
The SS490 Series MRL (Miniature Ratiometric Linear) sensors are small,
The integrated circuitry provides increased temperature stability and
The recent extension to the product line, the SS490B Series, offers cost-
The SS490B Series sensors are a new lower cost product line extension.
Do not use this document as product installation information.
provided in the instructions supplied with each product.
Failure to comply with these instructions could result in death or
serious injury.
WARNING
SS490 Series