General description
The KMA321/A is a single channel magnetic angle sensor. Magnetoresistive (MR)
sensor bridges and mixed signal IC are integrated into a single package. The module
has integrated filters and is optimized for PCB-less designs. The IC allows user-specific
adjustments of angular range, zero angle, and clamping voltages. The settings are
stored permanently in a non-volatile memory (NVM). The programmable angle sensor is
pre-programmed, pre-calibrated and therefore, ready to use.

Features and benefits
• High precision sensor for magnetic angular
measurement
• Single package sensor module with
integrated filters for improved electromagnetic
compatibility (EMC)
• Automotive qualified in accordance with
AEC-Q100 Rev-H
• Programmable user adjustments, e.g. zero
angle and angular range
• Fail-safe non-volatile memory with write
protection using lock bit
• Independent from magnetic field strength
above 25 kA/m
• Module ready to use without external
components
• Factory calibrated
• Separate temperature sensor and auxiliary
analog-to-digital converter (ADC) for magnetic
field conversion check
• High temperature range up to 180 °C
• Ratiometric analog output voltage or push pull
output stage compliant with SAE J2716 SENT
using pulse shaping
• Overvoltage protection up to 18 V
• Power-loss detection
• Programming via one-wire interface (OWI)
• 8 × 12-bit original equipment manufacturer
(OEM) code registers for identification (ID)
• ISO 26262 ASIL-C capable, safety element
out of context (SEooC)
• Multipoint calibration (MPC) with
17 equidistant or seven free selectable
calibration points
• Low latency