MLX90513has “exceptional accuracy” for automotive applications
The MLX90513 inductive sensor IC has with exceptional accuracy, said Melexis and is designed especially for automotive pedal and steering applications. The ASIL C sensor interface has on-chip digital signal processing for enhanced zero-delay performances.
The MLX90513 position sensor delivers a ±0.1 per cent full scale accuracy (±0.36 degrees in a rotary implementation with 360 degrees range). Its sub-20 microsecond latency can be reduced to zero through programming, to implement a fast control loop. This results in superior system responsiveness being assured, said Melexis. This inductive-based ASSP exhibits native immunity to stray electromagnetic fields (ISO 11452-8 standard requirements). At the same time, it is not affected by thermal drift in sensitivity, said Melexis.
Output configurability allows position sensing data to be delivered as analogue ratiometric, PWM, SENT or SPC signals. Output protocols relating to numerous different application criteria can therefore be addressed. The MLX90513 is the only inductive position sensor on the market to have an SPC output, claimed Melexis. There is also an option with 0.5 microseconds tick time (fast SENT or SPC). Melexis claimed no other inductive sensor currently available is able to offer this. The ability to conduct pulse shaping in PWM, SENT and SPC modes leads to electromagnetic emission reductions.
The MLX90513 can be used in throttle / accelerator / brake pedal positioning, steering wheel angle positioning, valves or actuators angle positioning and long stroke length linear applications (up to 300mm)
The MLX90513 can be used with Melexis’ magnetic sensors to provide system redundancy, without crosstalk interference.
The MLX90513 is supplied in a compact TSSOP-16 package. A -40 to +160 degrees C working temperature range permits installation in challenging application environments. The three-phase coil arrangement employed improves linearity, thanks to harmonic filtering. The device’s 32-point linearisation allows equalisation of angular non-linearity errors. Over-voltage and reverse polarity protection are also features and inductive measurement methods make it easier for system implementations to be streamlined.