A1308KUA-1-T

New applications for linear output Hall-effect sensors, such
as displacement and angular position, require higher accuracy
and smaller package sizes. The Allegro A1308 and A1309
linear Hall-effect sensor ICs have been designed specifically
to meet both requirements. These temperature-stable devices
are available in both surface-mount and through-hole packages.
The accuracy of each device is enhanced via end-of-line
optimization. Each device features nonvolatile memory to
optimize device sensitivity and the quiescent voltage output
(QVO: output in the absence of a magnetic field) for a given
application or circuit. This A1308 and A1309 optimized
performance is sustained across the full operating temperature
range by programming the temperature coefficient for both
sensitivity and QVO at Allegro end-of-line test.
These ratiometric Hall-effect sensor ICs provide a voltage
output that is proportional to the applied magnetic field. The
quiescent voltage output is adjusted around 50% of the supply
voltage.
The features of these linear devices make them ideal for use in
automotive and industrial applications requiring high accuracy,
and they operate across an extended temperature range,
–40°C to 150°C (SOT-23W and SIP -L temperature range) or
–40°C to 125°C (SIP -K temperature range).
Each BiCMOS monolithic circuit integrates a Hall element,
temperature-compensating circuitry to reduce the intrinsic