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Magnetic Sensors Provide Reliable Solution for PCB-less Applications

TDK Corporation is expanding its portfolio of TMR angle sensors with the TAD2140 type in a TO-6 package for automotive and industrial applications. The new sensor provides an innovative system-in-package solution for PCB-less applications, which includes two full TMR bridges, a dedicated ASIC for signal conditioning and integrated passive components.

In this article, PIF spoke to TDK about their new TMR angle sensor and how the TAD2140 type benefits PCB-less applications found in the automotive and industrial industries.

TMR angle sensors

The TAD2140 comes in a new TO-6 package that integrates six capacitors and one resistor. The sensor can be welded or soldered directly onto a package lead, a connector or a terminal, eliminating the need for a PCB, thus reducing total system size and cost.

Furthermore, by using fewer external components and lowering the number of solder joints, thus improving the long-term reliability of the overall system.

The ASIC provides several digital outputs such as Hall emulation (UVW), encoder (ENC), pulsewidth modulation (PWM), and SENT on two interfaces simultaneously.

The TAD2140 uses an embedded DSP from ICsense, an ASIC design specialist that TDK acquired in March 2017. Thanks to the integrated static and dynamic compensation functions of the ASIC, design-in effort is considerably reduced.

Sensor technology for automotive and industrial applications

Moreover, thanks to its small package size, the sensor is perfectly suited for applications with limited available space, such as steering motor commutation.

Furthermore, its various internal diagnostic features make it suitable for demanding automotive applications where functional safety is required (ASIL B rating).

The sensor's fast response, high angular accuracy, and advanced compensation algorithms make it ideal for the optimisation of motor control applications such as BLDC motor commutation.

Magnetic sensors for PCB-less applications

Like all of TDK's TMR sensors, the TAD2140 features an angle accuracy of ±0.2 °, achieving the world's smallest angle error of only ±0.05 ° at room temperature. The sensors are capable of contactless sensing from 0 ° to 360 ° over a temperature range of −40 °C to +150 °C.

In addition, the implemented algorithms allow higher assembly tolerances of mechanical components or increase of the system performance with existing solutions.

The sensor can also compensate any drifts of gain, offset or orthogonality as well as mechanical non-idealities like magnet tilt or displacement.

TAD2140 angle sensor from TDK


If you are interested in purchasing the TAD2140 angle sensor, contact TDK today.

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