AS5247-HMFM

AS5247-HMFM is a 14-bit dual-die on-axis magnetic rotary position sensor with an 11-bit binary incremental pulse count. It is a high-resolution redundant rotary position sensor for fast absolute angle measurement over a full 360-degree range. This new position sensor is equipped with a revolutionary integrated dynamic angle error compensation (DAEC™) with almost 0 latency. The robust design of the device suppresses the influence of any homogenous external stray magnetic field. A standard 4-wire SPI serial interface allows a host microcontroller to read 14-bit absolute angle position data from the AS5247 and to program non-volatile settings without a dedicated programmer. The AS5247 has been designed to support BLDC motor commutation for the most challenging and safety-critical automotive applications (AEC-Q100 grade 0 automotive qualified) such as electric power steering (EPS), transmission (gearbox, actuator), brake (actuator) and starter and alternator.

• Easy to use – saving costs on DSP, DAEC™ Dynamic angle error compensation
• Good resolution for motor and position control, 14-bit core resolution
• Versatile choice of the interface, independent output interfaces: SPI, ABI, UVW, PWM
• No programmer needed (via SPI command), zero position, configuration programmable
• Supports safety-critical applications, self-diagnostics and redundancy
• Lower system costs (no shielding), immune to external stray field
• Positive supply voltage range from 4.5 to 5.5V (5.0V operation mode)
• Supply current is 15mA maximum (Only for one die. Must be multiplied by 2)
• Sampling rate range from 202 to 247ns (refresh rate at SPI)
• TSSOP-14 package, temperature range from -45 to 150°C