Standard four-wire serial peripheral interface allows MCU to read absolute angle position data and to program non-volatile settings
Ams has a magnetic rotary position sensor for automotive applications compatible with the requirements of the ISO26262 functional safety standard.
Designed to provide absolute and incremental measurement outputs at speeds up to 28,000 revolutions per minute (rpm), the AS5147P is designed for safety-critical applications such as electric power steering (EPS), brake and accelerator pedals, pumps, double-clutch transmissions, starter motors, alternators and windscreen wiper motors.
The supplier says its dynamic angle error correction technology reduces the propagation delay inherent in the sensor’s signal chain to almost zero.
As a result, the AS5147P’s angle error is 0.02° at 1.7krpm, 0.17° at 14.5krpm and 0.34° at 28krpm.
The DAEC function also enables the device to refresh its measurement output every 1.9µs.
The differential sensing principle of the magnetic position sensors makes them immune by design to stray magnetism in the vehicle.
A standard four-wire serial peripheral interface allows a host microcontroller to read 14-bit absolute angle position data and to program non-volatile settings without a dedicated programmer.
The AS5147P is available in a TSSOP-14 package.
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