Inductive position interface IC MLX90513
The MLX90513 is an inductive position sensor interface which has been developed for absolute rotary and linear motion/position sensing in automotive and industrial applications. It is designed to control an inductive sensor (coils) and to process the acquired analog signals. It supports 4 output modes: SENT/SPC (short PWM code), PWM and analog.
Key Features of MLX90513
- High accuracy: maximum ±0.1% FS
Supports rotary (360°) and linear (up to 30 cm) - Immune to magnetic stray fields (ISO 11452-8)
- On-chip signal processing
- Single pin output configurable for SENT/SPC, PWM or Analog Ratiometric
- (fast) SENT according to SAE J2716 APR2016
featuring:
• Enhanced serial data communication
• Min. 0.5 μs tick time - Flexible signal conditioning with 32-point programmable linear transfer characteristic
- ASIL C compliant for all output modes (including analog), Safety Element out of Context (ISO 26262)
- Overvoltage and reverse-polarity protection ±24 V maximum
- Ambient operating temperature from -40°C to 160°C
- TSSOP-16 Package RoHS Compliant
Application
Among the uses of the MLX90513 are:
- Throttle/accelerator/brake pedal positioning
- Steering wheel angle positioning
- Valves or actuators angle positioningopening detection
- Long stroke length linear applications (up to 30cm)
The importance of functional safety (ISO 26262) has been taken into account, with the sensor supporting up to ASIL D system integration. Additionally, the MLX90513 can be used alongside Melexis’ magnetic sensors to provide system redundancy, as these devices will not interfere with each other (by generating crosstalk).
Performance
The new MLX90513 position sensor from Melexis delivers a ±0.1% full-scale accuracy (±0.36˚ in a rotary implementation with 360˚ range). In addition, its sub-20µs latency, which can be reduced to zero through programming, means that a fast control loop can be implemented - resulting in superior system responsiveness being assured. This inductive-based ASSP exhibits native immunity to stray electromagnetic fields (ISO 11452-8 standard requirements). At the same time, this sensor is not affected by thermal drift in sensitivity.
