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AS5145-HSSU Datasheet(PDF) 9 Page - ams AG |
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AS5145-HSSU Datasheet(HTML) 9 Page - ams AG |
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9 / 36 page  www.austriamicrosystems.com/AS5145 Revision 1.10 9 - 36 AS5145 Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s 6.2 System Specifications TAMB = -40 to +150°C, VDD5V = 3.0 to 3.6V (3V operation) VDD5V = 4.5 to 5.5V (5V operation) unless otherwise noted. Disp Displacement radius Max. offset between defined device center and magnet axis (see Figure 19) 0.25 mm Ecc Eccentricity Eccentricity of magnet center to rotational axis 100 µm Recommended magnet material and temperature drift NdFeB (Neodymium Iron Boron) -0.12 %/K SmCo (Samarium Cobalt) -0.035 Table 5. Input Specification Symbol Parameter Condition Min Typ Max Unit RES Resolution 0.088 deg 12 bit INLopt Integral non-linearity (optimum) Maximum error with respect to the best line fit. Centered magnet without calibration, TAMB =25 ºC. ± 0.5 deg INLtemp Integral non-linearity (optimum) Maximum error with respect to the best line fit. Centered magnet without calibration, TAMB = -40 to +150ºC ± 0.9 deg INL Integral non-linearity Best line fit = (Errmax – Errmin) / 2 Over displacement tolerance with 6mm diameter magnet, without calibration, TAMB = -40 to +150ºC ± 1.4 deg DNL Differential non-linearity 12bit, no missing codes ± 0.044 deg TN Transition noise 1 sigma, fast mode (MODE = 1) 0.06 Deg RMS 1 sigma, slow mode (MODE = 0 or open) 0.03 tPwrUp Power-up time Fast mode (Mode = 1); Until status bit OCF = 1 20 ms Slow mode (Mode = 0 or open); Until OCF = 1 80 tdelay System propagation delay absolute output : delay of ADC, DSP and absolute interface Fast mode (MODE = 1) 96 µs Slow mode (MODE = 0 or open) 384 fS Internal sampling rate for absolute output: TAMB = 25ºC, slow mode (MODE=0 or open) 2.48 2.61 2.74 kHz TAMB = -40 to +150ºC, slow mode (MODE=0 or open) 2.35 2.61 2.87 fS Internal sampling rate for absolute output TAMB = 25ºC, fast mode (MODE = 1) 9.90 10.42 10.94 kHz TAMB = -40 to +150ºC, fast mode (MODE=1) 9.38 10.42 11.46 CLK/SEL Read-out frequency Max. clock frequency to read out serial data 1 MHz Table 4. Magnetic Input Specification Symbol Parameter Condition Min Typ Max Unit |
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