austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: ams sales ams.com Please visit our website at www.ams.com AS5304 / AS5306 DATA SHEET Integrated Hall ICs for Linear and Off-Axis Rotary Motion Detection 1 General Description 2 Benefits The AS5304/AS5306 are single-chip ICs with integrated Complete system-on-chip Hall elements for measuring linear or rotary motion using High reliability due to non-contact sensing multi-pole magnetic strips or rings. Suitable for the use in harsh environments This allows the usage of the AS5304/AS5306 in Robust against external magnetic stray fields 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- 3 Key Features pole magnetized ring or strip and provides a quadrature High speed, up to 20m/s (AS5304) incremental output with 40 pulses per pole period at 12m/s (AS5306) speeds of up to 20 meters/sec (AS5304) or 12 meters/sec (AS5306). Magnetic pole pair length: 4mm (AS5304) or 2.4mm (AS5306) A single index pulse is generated once for every pole pair at the Index output. Resolution: 25m (AS5304) or 15m (AS5306) Using, for example, a 32pole-pair magnetic ring, the 40 pulses / 160 positions per magnetic period. AS5304/AS5306 can provide a resolution of 1280 1 index pulse per pole pair pulses/rev, which is equivalent to 5120 positions/rev or 12.3bit. The maximum speed at this configuration is 9375 Linear movement measurement using multi-pole rpm. magnetic strips The pole pair length is 4mm (2mm north pole / 2mm south Circular off-axis movement measurement using multi- pole) for the AS5304, and 2.4mm (1.2mm north pole / pole magnetic rings 1.2mm south pole) for the AS5306. The chip accepts a 4.5 to 5.5V operating voltage magnetic field strength down to 5mT (peak). Magnetic field strength indicator, magnetic field alarm Both chips are available with push-pull outputs for end-of-strip or missing magnet (AS530xA) or with open drain outputs (AS530xB). The AS5304/AS5306 are available in a small 20-pin 4 Applications TSSOP package and specified for an operating ambient temperature of -40 to +125C. 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 1: AS5304 (AS5306) with multi-pole ring magnet. Figure 2: AS5306 (AS5304) with magnetic multi-pole strip magnet for linear motion measurement Revision 1.9 www.ams.com Page 1 of 14 ams AG Technical content still valid