The sensor modules of the EBx7900 family are sensor modules based on the anisotropic MagnetoResistive (AMR) effect. Almost all modules are equipped with FixPitch sensors, which are adapted to a fixed pole pitch on the measurement scale. This ensures an excellent signal quality and high achievable levels of accuracy.
The sensor signals of the sensor modules are processed in an ASIC and can be issued as digital quadrature signals (A/B or A/B/Z). Some modules have differential output signals with line drivers.
The modules with a software-based calibration function are adjusted and optimally calibrated by us during production.
The sensor modules of the EBR7912EBx product range consist of an AMR FixPitch sensor, a GMR reference sensor and an 8-bit interpolation ASIC. When used with a magnetic measurement scale with a pole length of 2 mm, the modules deliver two differential square wave signals A and B phase-shifted by 90°.
The resolution can be set to up to 256 measurement steps per pole. The sensor module is calibrated and offers increased accuracy and lower edge jitter.
You can also order this product via RS Components.
Sensitec is increasing the sensor efficiency by means of various design modifications to the chip layout. The patented solutions, described more closely below, also contribute to better signal quality, reduced sensitivity to stray fields and increased control accuracy.