Sensor for PCB-less Application

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You may no longer need PCB for sensors as sensors that can be directly integrated onto package lead or connector is here

The new sensor aims to provide an innovative system-in-package for PCB-less applications. TDK Corporation (TSE:6762) is expanding its portfolio of TMR angle sensors with the TAD2140 type in a TO-6 package for automotive and industrial applications.

Sensor with fast response and high accuracy

The sensor includes two full TMR bridges, a dedicated ASIC for signal conditioning and integrated passive components. It features an angle accuracy of ±0.2 °, achieving angle error of only ±0.05 ° at room temperature.

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In addition to that, the sensor is capable of contactless sensing from 0 ° to 360 ° over a temperature range of −40 °C to +150 °C. It can be welded or soldered directly onto package lead, a connector or a terminal; hence, it does not need any PCB due to which, total system size and cost get reduced. The TAD2140 comes in a new TO-6 package, which integrates six capacitors and one resistor. As there are fewer external components and solder joints, the overall long-term reliability of the system is improved.

Automatic correction function

The sensor can compensate any drifts of gain, offset or orthogonality and mechanical non-idealities like magnet tilt or displacement. Moreover, the implemented algorithms allow higher assembly tolerances of mechanical components or increase of the system performance with existing solutions.The ASIC provides several digital outputs such as Hall emulation (UVW), encoder (ENC), pulse-width modulation (PWM) and SENT on two interfaces simultaneously.

Applications

The sensor has fast response, high angular accuracy and advanced compensation algorithms; hence, is ideal for the optimization of motor control applications such as BLDC motor commutation. Moreover, its small package size makes it optimum for applications with limited available space, such as steering motor commutation. Its various internal diagnostic features make it suitable for demanding automotive applications where functional safety is required (ASIL B rating).

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Now that sensors for PCB-less application is a thing, everyone is looking forward for its samples, which will be available in the market in the third quarter of 2018.

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