MLX90514 - Dual-Input Inductive Position Sensor Interface IC
The MLX90514 is a dual-input inductive position sensor used for absolute rotary or linear motion sensing. It is suitable for automotive applications where the simultaneous measurement of two positions is required. The position information derived from the two channels can be directly transferred to the output or used for the calculation of derived quantities, in particular differential and Vernier angles.
The MLX90514 is designed to control an inductive sensor system formed by the transmitting coil, one or two targets and two sets of receiver coils, each composed of three receiver coils. The on‐chip LC oscillator generates an electromagnetic field together with the transmitting coil. This electro‐ magnetic field induces, via the target(s), angle-dependent voltages in the receiving coils.
MLX90514 - Dual-Input Inductive Position Sensor
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The MLX90514 is a dual-input inductive position sensor used for absolute rotary or linear motion sensing. It is suitable for automotive applications where the simultaneous measurement of two positions is required. The position information derived from the two channels can be directly transferred to the output or used for the calculation of derived quantities, in particular differential and Vernier angles. |
The MLX90514 is designed to control an inductive sensor system formed by the transmitting coil, one or two targets and two sets of receiver coils, each composed of three receiver coils. The on‐chip LC oscillator generates an electromagnetic field together with the transmitting coil. This electro‐ magnetic field induces, via the target(s), angle-dependent voltages in the receiving coils. |
Features and benefits of MLX90514
- Synchronized dual input channel readout
- High accuracy: maximum error ±0.36 °electrical for each inductive channel
- Immune to magnetic stray fields (ISO 11452‐8)
- On‐chip signal processing and latency compensation for enhanced accuracy and excellent dynamic behavior
- Flexible signal conditioning with 16‐point programmable linearization characteristic per input channel
- External PWM channel readout
- On‐chip differential and Vernier angle calculation
- Output interface SENT, SPC, PWM or SPI
- (fast) SENT according to SAE J2716 APR2016 featuring:
- Enhanced serial data communication
- Min. 0.5 μs tick time
- Overvoltage and reverse‐polarity protection: -24 V to +24 V maximum
- Ambient Operating Temperature Range from ‐40 °C to 160 °C
- TSSOP‐16 Package RoHS Compliant
- Compliant to ISO26262 with ASIL C(D)
- AEC‐Q100 Qualified (Grade 0)
Application examples:
Contactless absolute rotary or linear position sensing
- Torque sensor
- Steering angle sensor
- Torque and steering angle sensor
- High-resolution rotary sensor
- High-resolution linear sensor
The sensor is provided with an additional PWM input channel whose readout can also be used for the calculation of the derived quantities.
The MLX90514 offers multiple output modes. It supports all standard formats of (fast) SENT and SPC (Short PWM Code), including enhanced serial messages providing error codes. It can also be configured to output a PWM signal. For embedded applications, the SPI protocol allows fast protected data transfer and device programming.
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