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AS5043TR Datasheet(PDF) 12 Page - ams AG |
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AS5043TR Datasheet(HTML) 12 Page - ams AG |
12 / 26 page AS5043 Programmable 360° Magnetic Angle Encoder Revision 1.4, 04-Apr-06 www.austriamicrosystems.com Page 12 of 26 12.2.1 Angular range Selector : The Angular Range selector allows a digital pre-selection of the angular range. The AS5043 can be configured for a full scale angular range of 45°,90°,180° or 360°. In addition, the Output voltage versus angle response can be fine-tuned by setting the gain of the OP-AMP with external resistors and the maximum output voltage can be set in the DAC. The combination of these options allows to configure the operation range of the AS5043 for all angles up to 360° and output voltages up to 5.5V The response curve for the analog output is linear for the selected range (45°/90°/180°/360°). In addition, the slope is mirrored at 180° for 45°- and 90°- modes and has a step response at 270° for the 180°-mode. This allows the AS5043 to be used in a variety of applications. In these three modes, the output remains at Vout,max and Vout,min to avoid a sudden output change when the mechanical angle is rotated beyond the selected analog range. In 360°-mode, a jitter between Vout,max and Vout,min at the 360° point is also prevented due to a hysteresis. Output Range1 Output Range0 Mode Note 0 0 0 0° 256 90° 18 0° 2 7 0 ° 360 ° 0 angle*) 360° a ngular ra n ge (d efault) 10 23 512 768 1 024 default mode, analog resolution= 10bit (1024 steps) over 360° analog step size: 1LSB = 0.35° 0 1 0 0° 90 ° 18 0° 2 7 0 ° 360 ° 0 angle 180° a ngular ra n ge 10 23 2 56 51 2 768 1 024 analog resolution= 10bit (1024 steps) over 180° Analog step size: 1LSB = 0.175° 1 0 0 0° 90 ° 18 0° 2 7 0 ° 360 ° 0 angle 90° an gula r rang e 10 23 2 56 51 2 768 1 024 analog resolution= 10bit (1024 steps) over 90° Analog step size: 1LSB = 0.088° 1 1 0 0° 90 ° 18 0° 2 25° 360 ° 0 angle 45° an gula r rang e 51 1 2 56 51 2 640 1 024 1 28 45° analog resolution= 9 bit (512 steps) over 45° Analog step size: 1LSB = 0.088° *) Note: the resolution on the digital SSI interface is always 10bit (0.35°/step) over 360°, independent on analog mode Table 5: Digital Range Selector programming options |
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