FEATURES AND BENEFITS
3D magnetic sensor enables flexible mechanical
integration for contactless linear and rotary position
applications
• Configurable signal path processing and on-chip angle
calculation for accurate 360° and short stroke (<360°)
rotary applications
• Multiple programmable linearization options for
maximum measurement accuracy:
□ Piecewise-linear and binning modes
□ Up to 33-point fixed position
□ Up to 22-point programmable positions
• Ratiometric Analog, PWM, or SENT (SAE J2716)
output formats
• Integrated IC diagnostics for high reliability
• Developed in accordance with ISO 26262 requirements
for hardware product development for use in safetycritical applications
• Supports operation in harsh conditions, required for
automotive and industrial applications
□ AEC-Q100 Grade 0 qualified
□ –40°C to 150°C temperature range
□ 4.5 to 5.5 V supply operating range
□ Over- and reverse-voltage protection
• Multiple package options available:
□ Single die surface mount (SOIC-8)
□ Dual (full redundant) stacked die surface mount
(TSSOP-14)
APPLICATIONS
• Contact-less linear and rotary position sensor
• Throttle, valve, and cylinder position sensor
• Pedal position sensor
• Transmission position (fork/clutch, shifter, park lock)
DESCRIPTION
The A31315 3DMAG™ position sensor is designed for on-axis
and off-axis rotary as well as linear stroke position measurement
in automotive, industrial, and consumer applications.
This sensor integrates vertical and planar Hall-effect elements
with precision temperature-compensating circuitry to detect
two out of three magnetic field components (X, Y, and Z).
Using configurable signal processing, linearization, and
angle calculation allows the A31315 to accurately resolve the
absolute rotary (full 360° and short-stroke <360°) or linear
position of a moving magnetic target.
The A31315 features ratiometric analog, PWM, or SENT
(SAE J2716) interface options to output the angle between
the two factory-selected axes or the field from a single axis.
In addition, the SENT interface provides the option to output
the field measurement from both channels.
On-chip EEPROM technology, capable of supporting up to
100 write cycles, is integrated for flexible programming of
configuration and calibration parameters and includes 92 bits
provided for customer device identification purposes.
The A31315 contains on-chip diagnostic features required for
high reliability automotive applications, including monitors of
both internal and external fault conditions.
Developed in accordance with ISO 26262 as a hardware safety
element out of context (SEooC) with ASIL B (single die) and
ASIL D (dual die) capability for use in automotive safety-related
systems when integrated and used in the manner prescribed in
the applicable safety manual and datasheet.
The A31315 is available as a single die in the SOIC-8 package
and stacked dual die in the TSSOP-14 package for applications
that require full redundancy