AS5304A-ATSU

AMS  AS5304A-ATSU  芯片, 运动编码器, 直线与偏轴, 20TSSOP

The 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.

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High speed, up to 20m/s

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4mm Magnetic pole pair length

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25µm Resolution

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40 pulses/160 positions per magnetic period

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1 Index pulse per pole pair

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Linear movement measurement using multi-pole magnetic strips

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Circular off-axis movement measurement using multi-pole magnetic rings

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Magnetic field strength indicator, magnetic field alarm for end of-strip or missing magnet

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Push-pull outputs