NCV77320

Inductive Position Sensor Interface

Introduction TheNCV77320isasingle−chipinductivepositionsensorinterface that,incombinationwithaPCB,formsasystemthatmeasuresangular orlinearpositionsaccurately. Theoperatingprincipleoftheinductivesensorisbasedonmutual inductance.Thechipcontainsanexcitations

NCV77320

Inductive Position Sensor interface; analog, SPI and SENT output; ISO26262 ASIL B (D); Automotive; • Integrated DSP Position Calculation with Flexible 15 PointLinearization\n• Robust = Insensitive to stray magnetic fields\n• Diagnostics, Including for Missing Wire / Wire MisconnectionTolerant\n• Cost = No magnet needed\n• Analog Output or SENT Output Configurable\n• Robust = Insensitive to temperature variations\n• Temperature Sensor Embedded\n• Flexible = Easy to implement redundancy on sensor level\n• SPI Watchdog Feature\n• Flexible = Number of poles (overall resolution) is defined by the PCB, not by the sensor interface\n• Supply Voltage 5 V; −15 V to 30 V Tolerant Robustness\n• Flexible SPI Operation with 3.3 V or 5 V Micro Controllers\n• Maximum Rotational Speed of 10800 rpm\n• Operating Ambient Temperature −40 to 150°\n• Developed According to the Automotive Safety Standard ISO26262\n• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHSCompliant\n;

The NCV77320 is an inductive position sensor interface that, in combination with a PCB, forms a system to measure angular or linear positions accurately. The operating principle of the inductive sensor is based on mutual inductance. The chip contains an excitation source, which generates an AC magnetic field through a primary coil on the PCB. The field mutually couples to the rotor. The rotor on its turn induces voltages in secondary coils. These voltages, measured by the chip, depend on the rotor position and give a measure for the position. The NCV77320 contains 3 interfaces: A single ended analog output, a SENT interface with fast and slow channel and a SPI channel for direct interconnection to a micro controller. The analog output is proportionally ratio metric with the supply voltage. The NCV77320 has several fault detection circuitries. When a fault is detected, fault flags are set and available for readout.

NCV77320DB0R2G

Inductive Position Sensor Interface

Introduction TheNCV77320isasingle−chipinductivepositionsensorinterface that,incombinationwithaPCB,formsasystemthatmeasuresangular orlinearpositionsaccurately. Theoperatingprincipleoftheinductivesensorisbasedonmutual inductance.Thechipcontainsanexcitations