
DESCRIPTION
Honeywell
’s APS00B High Resolution Magnetic Displacement
Sensor is a miniature surface mount sensor for linear, angular,
or rotary displacement designed for magnetic saturating field
sensing.
The APS00B creates an analog output voltage that varies with
the direction of the magnetic flux passing over the sensor
surface. It contains dual, saturated-mode Wheatstone bridges
that generate quadrature (sine and cosine) signals to provide
an extended range of angular measurements up to 180°.
This sensor is a cost-effective and space-efficient solution for
high-volume OEM designs. Potential applications include
position sensing, rotary speed and angle detection, and non-
contact precision location measurement systems.
APS00B sensors use Honeywell
’s Anisotropic
Magnetoresistive (AMR) technology that provides advantages
over Hall-effect-based magnetic sensors. They are designed to
resolve better than a tenth of a degree or a tenth of a
millimeter, to withstand large variations in magnet-to-sensor
gaps, and to exhibit insensitivity to shocks and vibrations.
Honeywell
’s magnetic sensors are among the most precise
and reliable position sensors in the industry.
These surface mount devices are mounted directly on the
electrical traces on a PC (Printed Circuit) board. They are
attached by an automatic solder reflow operation which
requires no hole, so it may help reduce the cost of the PC
board.
FEATURES AND BENEFITS
Wide, angular range allows measurements of ±90° without
additional components, making this device suitable for a
variety of angular sensing applications. Measurements of
±180° are possible with external components.
Resolution capability of less than 0.05° enhances overall
system accuracy.
Absolute sensing means no indexing is required and the
exact target position is known, which can simplify the system
design.
Dual Wheatstone bridges provide a passive, low-noise
design, enhancing system performance.
Small, 8-pin surface-mount package saves room on the PC
board when compared to larger IC (Integrated Circuit)
packages and components.
RoHS-compliant materials meet Directive 2002/95/EC.
Tape and reel configuration allows use with automated pick-
and-place equipment, potentially reducing assembly costs
(178 mm [7 in] and 330 mm [13 in] reels available).
Typical 0 MHz to 5 MHz frequency response with 190 G
minimum magnetic field applied makes this saturated mode
sensor potentially suitable for high speed applications.
Typically requires only 5 V at 4 mA to operate (20 mW),
promoting energy efficiency.
The sensors measure only field direction and are virtually
unaffected by shock, vibration and magnetic-source gap
variations, providing a stable, reliable output.
Dual bridges with outputs 45° out of phase make it possible
to use outputs as speed and direction signals.
Honeywell APS00A instrumentation amplifier is available
separately for additional signal processing.
.