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AS5043ASST 数据表(PDF) 30 Page - ams AG |
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AS5043ASST 数据表(HTML) 30 Page - ams AG |
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30 / 36 page  AS5043 Data Sheet – Electrical Characteristics www.austriamicrosystems.com Revision 1.80 30 – 36 19.3.6 OPAMP Output Stage Parameter Symbol Min Typ Max Unit Note Power Supply Range VDD5V 3.0 5.5 V Parallel Load Capacitance CL 100 pF Parallel Load Resistance RL 4.7 k Ω 3.3V operation Open Loop Gain A0 92 130 144 dB Offset Voltage RTI VosOP -5 5 mV 3 sigma Output Range Low VoutL 0.05 * VDD5V V Output Range High VoutH 0.95 * VDD5V V Linear range of analog output Current capability sink Isink 4.8 50 mA Permanent short circuit current: Vout to VDD5V Current capability source Isource 4.6 66 mA Permanent short circuit current: Vout to VSS Output noise Vnoise 160 220 490 µVrms Over full temperature range; BW= 1Hz…10MHz,Gain = 2x 2 Internal; OTP: FB_int EN = 1 OPAMP gain (non- inverting) Gain 1 4 External OTP: FB_int EN = 0 (default) With external resistors, pins Vout [#12] and FB [#11]: see Figure 14 19.4 Magnetic Input Specification (operating conditions: Tamb = -40 to +125°C, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation) unless otherwise noted) Two-pole cylindrical diametrically magnetised source: Parameter Symbol Min Typ Max Unit Note Diameter dmag 4 6 mm Thickness tmag 2.5 mm Recommended magnet: Ø 6mm x 2.5mm for cylindrical magnets Magnetic input field amplitude Bpk 45 75 mT Required vertical component of the magnetic field strength on the die’s surface, measured along a concentric circle with a radius of 1.1mm Magnetic offset Boff ± 10 mT Constant magnetic stray field Field non-linearity 5 % Including offset gradient fmag_abs 10 Hz Absolute mode: 600 rpm @ readout of 1024 positions (see table 6) Input frequency (rotational speed of magnet) fmag_inc 166 Hz Incremental mode: no missing pulses at rotational speeds of up to 10,000 rpm (see table 6) Displacement radius Disp 0.25 mm Max. offset between defined device center and magnet axis -0.12 NdFeB (Neodymium Iron Boron) Recommended magnet material and temperature drift -0.035 %/K SmCo (Samarium Cobalt) |
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