The AS5304A-ATSU is a 160-step Linear Incremental Position Sensor 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 20m/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 4mm (2mm North Pole/2mm South poles). The chip accepts a magnetic field strength down to 5mT (peak).
● High speed, up to 20m/s
● 4mm Magnetic pole pair length
● 25µm Resolution
● 40 pulses/160 positions per magnetic period
● 1 Index pulse per pole pair
● Linear movement measurement using multi-pole magnetic strips
● Circular off-axis movement measurement using multi-pole magnetic rings
● Magnetic field strength indicator, magnetic field alarm for end of-strip or missing magnet
● Push-pull outputs
