TDK adds redundant products in the TMR angle sensor family, which meets ASIL D safety standards

     TDK has recently announced the expansion of its tunnel magnetic resistance (TMR) angle sensor product portfolio, and launched a new product TAD4140 with digital output. Compared with TDK's existing digital angle sensor TAD2141, the new product TAD4140 meets the high requirements of automotive and industrial applications. TAD4140 is characterized by two signal processors in a single TSSOP16 package to provide full redundant. Both angle sensors can be measured from non-contact to 360 degrees in the environmental temperature range of -40 ° C to +150 ° C, which is suitable for electronic assistance steering system (EPAS) motor to communicate. Control the application.

     TDK digital angle sensor products have various internal diagnostic characteristics, allowing TAD2141 and TAD4140 to be suitable for automotive applications with functional security requirements. TAD4140 meets the automotive functional safety integrity level D (ASIL D) at the system level. High signal availability and high diagnostic coverage rate, TAD4140 can also support the fault working mode

     Serial peripheral interface (SPI). Because of redundancy, TAD4140 can give two different outputs at the same time, such as ABZ and ENC to calculate speed, direction and motor position. This indicates that the sensor can work with the two ECUs of the main/from the configuration, such as using the steering motor position detection.

     TDK art -grade TMR technology can be used with special integrated circuits (ASICs) containing embedded signal processors (DSP). Both TAD2141 and TAD4140 have static and dynamic calibration functions, which can compensate the amplitude increase, bias, and orthodox deviation. The product guarantees the angle accuracy of ± 0.35 and reaches the smallest angle error in the industry at room temperature ± 0.05 degrees. The installation error including magnet tilt and magnet shift can also be compensated to make the installation of mechanical components a greater tolerance.

     Both sensors are packaged by TSSOP16, which are exactly the same pins on the side of the packaging to provide customers with better design flexibility, and it is convenient to replace the redundant version of the product (TAD4140) when needed.