SensorDynamics launches the SD 41x single-chip solution for AMR-sensors interface. As the differential output signals of an AMR-sensor are lower than 100 mV, in order to achieve sufficiently high position accuracy, these signals have to be amplified and filtered before being processed in the microcontroller. Additional discrete components required for such amplification has a significant impact on total costs. As SD41x integrates the necessary amplifiers, filters, ADCs and a microcontroller, costs are significantly lowered.
The gain, the band width and the resolution of the ADCs are configurable for each application by software, which significantly reduces the usual effort of configuration by external resistors and capacitors. In addition, individual parameters of each sensor module can be easily adjusted and fine tuned at the end of the sensor module manufacturing line.
Its ability to configure parameters by software helps shortening time to market. The SD41x comes with a development tool kit that includes an easy to use graphical full-screen configurator, the necessary drivers, the manual and C-code examples.
Wolfgang Patelay, Editor Print & Online 