AS5306A-ATSU

The AS5306A-ATSU is a single-chip Encoder IC with Integrated hall elements for measuring linear or rotary motion using multi-pole magnetic strips or rings. This allows the usage of the device in applications where the Sensor IC cannot be mounted at the end of a rotating device (e.g. at hollow shafts). Instead, the device is mounted OFF-axis underneath a multi-pole magnetized ring or strip and provides a quadrature incremental output with 40 pulses per pole period at speeds of up to 12m/s. A single index pulse is generated once for every pole pair at the Index output. Using, for example, a 32 pole-pair magnetic ring, the device can provide a resolution of 1280 pulses/rev, which is equivalent to 5120 positions/rev or 12.3-bit. The maximum speed at this configuration is 9375rpm. The pole pair length is 2.4mm (1.2mm North Pole/1.2mm South Pole) for the AS5304. The chip accepts a magnetic field strength down to 5mT (peak).