昂赛微线性霍尔传感器AS1242扫地机机会替代麦歌恩

General Description
The AS1242 is small, versatile linear Hall effect
devices which are operated by the magnetic field from
a permanent magnet or an electromagnet. They are
optimized to accurately provide a voltage output that is
proportional to an applied magnetic field. These
devices have a quiescent output voltage that is about
50% of the supply voltage.
The Hall-effect integrated circuit included in each
device includes a Hall sensing element, a linear
amplifier, and a CMOS Class AB output structure.
Integrating the Hall sensing element and the amplifier
on a single chip minimizes many of the problems
normally associated with low voltage level analog
**s.
High precision in output levels is obtained by
internal gain and offset trim adjustments made at
end-of-line during the manufacturing process.
The  integrated  circuitry  provides  increased
temperature stability and sensitivity, for both linear
target motion and rotational motion. These linear
position sensors have an operating temperature range
of -40°C to +125°C, appropriate for industrial
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
helps compensate for the negative temperature
coefficients of low cost magnets, providing a robust
design over a wide temperature range.
The AS1242 is available in SOT89-3L and
SOT23-3L package, and is rated over the -40°C to
+125°C. These packages are available in a lead (Pb)
free version.