Honeywell SS490 Solid State Hall Effect Sensors
Honeywell’s SS490 Series MRL (Miniature Ratiometric Linear) sensors are small Hall effect devices that have a ratiometric output voltage that is set by the supply voltage and varies in proportion to the strength of the magnetic field.
- Small size (.160 x .118 in)
- Low power consumption: 7 mA at 5 V DC
- Single current sinking or current sourcing output
- Linear output for circuit design flexibility
- Built-in thin film resistors are laser trimmed
Product Description
Honeywell’s SS490 Series MRL (Miniature Ratiometric Linear) sensors are small Hall effect devices that have a ratiometric output voltage that is set by the supply voltage and varies in proportion to the strength of the magnetic field.
They feature laser-trimmed thin film resistors to provide high accuracy (null to ±3%, sensitivity up to ±3%) and temperature compensation.
These linear position sensors have an operating temperature range of -40 °C to +150 °C, making them appropriate for industrial and automotive environments.
They respond to either positive or negative gauss, monitoring either or both magnetic poles, while the quad Hall sensing element minimises the effects of mechanical or thermal stress on the output.
The positive temperature coefficient of the
sensitivity (+0.02% per °C typical) helps compensate for the negative temperature coefficients of low-cost magnets, providing a robust design over a wide temperature range.
The series relies on rail-to-rail operation over the full voltage range to provide a more usable signal for higher accuracy.
A new 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 1.5mA continuous, uses 7mA of supply current at 5.0 volts and 25°C, and provides predictable performance over the full temperature range.
The lower-cost SS490B Series sensors also 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.
Typical applications include Current sensing, Motor control, Position sensing, Magnetic code reading, Rotary encoder, Ferrous metal detector, Vibration sensing, Liquid level sensing and Weight sensing.