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AS5304B Datasheet(PDF) 1 Page - ams AG |
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AS5304B Datasheet(HTML) 1 Page - ams AG |
1 / 13 page Revision 1.5 www.austriamicrosystems.com Page 1 of 13 1 General Description The AS5304/AS5306 are single-chip IC’s with integrated Hall elements for measuring linear or rotary motion using multi-pole magnetic strips or rings. This allows the usage of the AS5304/AS5306 in applications where the Sensor IC cannot be mounted at the end of a rotating device (e.g. at hollow shafts). Instead, the AS5304/AS5306 are 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 20 meters/sec (AS5304) or 12 meters/sec (AS5306). A single index pulse is generated once for every pole pair at the Index output. Using, for example, a 32pole-pair magnetic ring, the AS5304/AS5306 can provide a resolution of 1280 pulses/rev, which is equivalent to 5120 positions/rev or 12.3bit. The maximum speed at this configuration is 9375 rpm. The pole pair length is 4mm (2mm north pole / 2mm south pole) for the AS5304, and 2.4mm (1.2mm north pole / 1.2mm south pole) for the AS5306. The chip accepts a magnetic field strength down to 5mT (peak). Both chips are available with push-pull outputs (AS530xA) or with open drain outputs (AS530xB). The AS5304/AS5306 are available in a small 20-pin TSSOP package and specified for an operating ambient temperature of -40° to +125°C. Figure 1: AS5304 (AS5306) with multi-pole ring magnet. 2 Benefits • Complete system-on-chip • High reliability due to non-contact sensing • Suitable for the use in harsh environments • Robust against external magnetic stray fields 3 Key Features • High speed, up to 20m/s (AS5304) 12m/s (AS5306) • Magnetic pole pair length: 4mm (AS5304) or 2.4mm (AS5306) • Resolution: 25µm (AS5304) or 15µm (AS5306) • 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 • 4.5 to 5.5V operating voltage • Magnetic field strength indicator, magnetic field alarm for end-of-strip or missing magnet 4 Applications The AS5304/AS5306 are ideal for high speed linear motion and off-axis rotation measurement in applications such as • electrical motors • X-Y-stages • rotation knobs • industrial drives Figure 2: AS5306 (AS5304) with magnetic multi-pole strip magnet for linear motion measurement AS5304 / AS5306 Integrated Hall ICs for Linear and Off-Axis Rotary Motion Detection PRELIMINARY DATA SHEET |
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