AS5043ASSU austriamicrosystems, AS5043ASSU Datasheet

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... Ideal for applications in harsh environments Robust system, tolerant to magnet misalignment, airgap variations, temperature external magnetic fields No calibration required Figure 1: Typical Arrangement of AS5043 and Magnet www.austriamicrosystems.com 3 Key Features 360° contactless high resolution angular position encoding integrated Hall User programmable zero position Two 10-bit absolute outputs: ...

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... Output for internal core, regulated from VDD5V.Connect to VDD5V for 3V 15 VDD3V3 S supply voltage. Do not load externally. 16 VDD5V S Positive Supply Voltage, 3.0 to 5.5 V DO_OD digital output open drain DI_PD digital input pull-down DI_PU digital input pull-up www.austriamicrosystems.com 1 MagRngn Mode 2 CSn 3 4 CLK ...

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... Pin 11 FB (Feedback) is the inverting input of the OPAMP buffer stage. Access to this pin allows various OPAMP configurations. Pin 12 Vout is the analog output pin. The analog output voltage, ratiometric to VDD5V (3.0 – 5.5V external voltage source and proportional to the angle. www.austriamicrosystems.com Revision 1.80 3 – 36 ...

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... The AS5043 is tolerant to magnet misalignment and unwanted external magnetic fields due to differential measurement technique and Hall sensor conditioning circuitry also tolerant to airgap and temperature variations due to Sin-/Cos- signal evaluation. Figure 3: AS5043 Block Diagram Sin Cos www.austriamicrosystems.com Ang Mag 10 Revision 1.80 MagRNGn ...

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... A buffer capacitor of 100nF is recommended in both cases close to pin VDD5V. Note that pin VDD3V3 must always be buffered by a capacitor. It must not be left floating, as this may cause an instable internal 3.3V supply voltage which may lead to larger than normal jitter of the measured angle. www.austriamicrosystems.com Revision 1.80 5 – 36 ...

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... The absolute angular output is always set to a resolution of 10 bit / 360°. Placing the magnet above the chip, angular values increase in clockwise direction by default. Figure 5: Synchronous Serial Interface with Absolute Angular Position Data CSn t T CLK FE CLK / 2 1 CLK valid DO active www.austriamicrosystems.com Mag Parity DEC 0 1 even checksum of bits 1: OCF Angular Position Data Revision 1 ...

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... On disabled www.austriamicrosystems.com No distance change Magnetic Input Field OK (GREEN range, ~45…75mT) Distance increase, GREEN range; Pull-function. This state is dynamic and only active while the magnet is moving away from the chip. Distance decrease, GREEN range; Push- function. This state is dynamic and only active while the magnet is moving towards the chip. YELLOW Range: Magnetic field is ~ 25… ...

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... Transition noise (1 sigma) Propagation delay 384µs Startup time 20ms The MODE pin should be set at power-up. A change of the mode during operation is not allowed. www.austriamicrosystems.com Fast Mode (Pin MODE = 1) 10.42 kHz (95.9µs) ≤ 0.06° rms 96µs 80ms Revision 1 ...

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... Figure 7). Figure 6: Daisy Chain Hardware Configuration CSn CSn CLK CLK DI DO MCU Figure 7: Daisy Chain Data Transfer Timing Diagram active D O valid www.austriamicrosystems.com CSn CLK 100R PROG DO 1nF GND AS5043 AS5043 ngular P osition D ata evice Revision 1.80 CSn CLK ...

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... Figure 8: Analog Output, Full Scale Mode (shown for 360°mode) Vref 100% analog output voltage 0V 0° 90° www.austriamicrosystems.com angle 360° 180° 270° Revision 1. amplified by the OPAMP stage (default = Note: For simplification, Figure 8 describes a linear output voltage from rail to rail (0V to VDD) ...

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... OTP bit in the factory setting must be set. The corresponding bit is FS6. See application note AS5040-20 (Extended features of OTP programming) for further details. The application note is available for download at the austriamicrosystems website. The analog and digital outputs will have the following conditions: ...

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... Figure 10: Programming Access – OTP Write Cycle (section of) CSn t Datain Prog CCW Z9 1 CLK PROG t Prog enable t Datain valid www.austriamicrosystems.com ) must be applied to program the fuses. To exit the programming mode, the PROG 01 = 180° 45° clk see text Zero Position Revision 1 ...

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... Zero Position Programming to provide an analog output voltage of 2.0 Volts at an angle of 180°. The slope of the curve may be further adjusted by changing the gain of the OPAMP output stage and by selecting the desired angular range (360°/180°/90°/45°). www.austriamicrosystems.com Programming Mode Data ...

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... Note: the default setting for the OPAMP feedback path is:FB_intEn=0=external. The external resistors Rf and Rg must be installed. In the programmed state (FB_intEn=1=internal), these resistors do not need to be installed as the feedback path is internal (Rf_int and Rg_int). www.austriamicrosystems.com the output can be electrically rotated to match a given output voltage to any mechanical position 180° ...

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... In 360°-mode, a jitter between V and V at the 360° point is also prevented due to a hysteresis. out,max out,min www.austriamicrosystems.com External DAC reference pin. Leave open or connect to VSS if not used 9 2 ...

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... The “Write Data” sequence may be applied at any time during normal operation. This configuration remains set while the power supply voltage is above the power-on reset level (see 19.5). See Application Note AN5000-20 for further information. 12.5 Digital-to-Analog Converter (DAC) The DAC has a resolution of 10bit (1024 steps) and can be configured for the following options. www.austriamicrosystems.com ° ...

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... Vout TN = transition noise (in °rms; see 19.5) VDD5V = Supply voltage VDD5V noise level of OPAMP noise,OPAMP (paragraph 19.3.6) in Vrms 12.7 Application Examples See Application Note AN5043-10 for AS5043 Application Examples. www.austriamicrosystems.com out in paragraph 19.3.6. Note that the noise level is given noise ∗ TN VDD ...

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... A reading between 100mV and 1V indicates a faulty bit, which may result in an undefined digital value, when the OTP is read at power-up. th Following the 16 clock (after reading bit “ccw”), the chip must be reset by disconnecting the power supply. Figure 15: Analog OTP Register Read tpE bit dig rog www.austriamicrosystems.com log ata gra rog ram Revision 1 ...

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... The Alignment mode can be reset to normal operation mode by a power-on-reset (cycle power supply falling edge of CSn with PROG=low (see Figure 16). Figure 16: Enabling the Alignment Mode PROG AlignMode enable CSn 2µs 2µs min. min. www.austriamicrosystems.com Figure 17: Exiting Alignment Mode PROG Read-out via SSI CSn Revision 1.80 Read-out exit AlignMode via SSI ...

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... Physical Placement of the Magnet The best linearity can be achieved by placing the center of the magnet exactly over the defined center of the IC package as shown in Figure 19. Figure 19: Defined IC Center and Magnet Displacement Radius 2.433 mm 2.433 mm www.austriamicrosystems.com typ. 6mm diameter S Magnet axis Magnet axis concentric circle ...

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... A magnetic field outside the specified range may still produce usable results, but the out-of-range condition will be indicated by MagRngn (pin 1), which will be pulled low. At this condition, the angular data is still available over the digital serial interface (SSI), but the analog output will be turned off. Figure 20: Vertical Placement of the Magnet Die surface www.austriamicrosystems.com Package surface 0.576mm ± ...

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... The chip will continue to operate, but with degraded output linearity, if the signal field strength is outside the recommended range. Too strong magnetic fields will introduce errors due to saturation effects in the internal preamplifiers. Too weak magnetic fields will introduce errors due to noise becoming more dominant. www.austriamicrosystems.com ° ...

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... In a failure case, either when the magnetic field is out of range or the power supply is missing, this output will become low. To ensure an adequate low level in case of a broken power supply to the AS5043, the pull-up resistor (~10kΩ) must be connected to the positive supply at pin 16 (VDD5V). . www.austriamicrosystems.com Revision 1.80 23 – 36 ...

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... The total nonlinearity error over process tolerances, temperature and a misalignment circle radius of 0.25mm is specified better than ±1.4 degrees. The magnet used for this measurement was a cylindrical NdFeB (Bomatec® BMN-35H) magnet with 6mm diameter and 2.5mm in height. www.austriamicrosystems.com Linearity Error over XY-misalignment [° ° ...

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... With the given sampling rates, the number of samples (n) per turn for a magnet rotating at high speed can be calculated by 60 for fast mode = n μ ⋅ rpm 96 s www.austriamicrosystems.com Linearity Error with Centered Magnet [degrees] Err max Err min Revision 1.80 transition noise *1 in slow mode (pin MODE = low or open). 25 – 36 ...

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... This tolerance influences the ADC sampling rate: 18.6.1 Absolute Output; SSI Interface A new angular value is updated every 96µs +/- 5% (Mode = 1) or 384µs +/- 5% (Mode = 0 or open) www.austriamicrosystems.com Slow Mode (Pin Mode = 0 or open) 610rpm = 256 samples / turn 1220rpm = 128 samples / turn 2441rpm = 64 samples / turn etc… ...

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... Timing Tolerance over Temperature The internal RC oscillator is factory trimmed to ±5%. Over temperature, this tolerance may increase to ±10%. Generally, the timing tolerance has no influence in the accuracy or resolution of the system used mainly for internal clock generation. www.austriamicrosystems.com Revision 1.80 27 – 36 ...

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... VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation) unless otherwise noted) amb Parameter High level input voltage Low level input voltage Schmitt Trigger hysteresis Input leakage current Pull-up low level input current Pull-down high level input current www.austriamicrosystems.com Symbol Min Max VDD5V -0.3 7 VDD3V3 5 -0 ...

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... OUTM1 V 0.10 *V OUTM2 Output resistance R Out,DAC DAC reference voltage (DAC full V ref scale range) Integral non- INL DAC linearity Differential non- DNL DAC linearity Analog output Hyst hysteresis www.austriamicrosystems.com Symbol Min V 0.7 * VDD5V IH See “programming V PROG conditions” Symbol Min V VSS+0 ...

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... Magnetic input field B pk amplitude Magnetic offset B off Field non-linearity f mag_abs Input frequency (rotational speed of magnet) f mag_inc Displacement radius Disp Recommended magnet material and temperature drift www.austriamicrosystems.com Min Typ Max 3.0 5.5 100 4.7 92 130 144 -5 5 0.05 * VDD5V 0.95 * VDD5V 4.8 50 4.6 ...

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... ADC and DSP Internal sampling rate for f S,mode0 absolute output: Internal sampling rate for f S,mode1 absolute output Read-out frequency CLK *) digital interface www.austriamicrosystems.com Min Typ Max Unit 10 ± 0.5 opt ± 0.9 temp ± 1.4 ± 0.176 0.06 Deg RMS 0 ...

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... Programming Conditions (operating conditions -40 to +125°C, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation) unless amb otherwise noted) Parameter Programming enable time Write data start Write data valid www.austriamicrosystems.com Actual curve TN Ideal curve DNL+1LSB INL 0.35° 512 180° Min ...

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... CLK PROG CLK pulse width Hold time of Vprog after programming Programming voltage Programming voltage off level Programming current Analog read CLK Programmed zener voltage (log.1) Unprogrammed zener voltage (log. 0) www.austriamicrosystems.com Symbol Min Typ t 3 Load PROG t 0 PrgR t 0 PrgH CLK ...

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... K 0° - 8° L 0.63 0.75 0.95 21 Packing Options Delivery: Tape and Reel (1 reel = 2000 devices) Tubes (1 box = 100 tubes á 77 devices) Order # AS5043ASSU for delivery in tubes Order # AS5043ASST for delivery in tape and reel www.austriamicrosystems.com AYWWIZZ AS5043 inch Min Typ Max .068 ...

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... AS5043 Data Sheet – Recommended PCB Footprint 22 Recommended PCB Footprint Recommended Footprint Data mm inch A 9.02 0.355 B 6.16 0.242 C 0.46 0.018 D 0.65 0.025 E 5.01 0.197 www.austriamicrosystems.com Revision 1.80 35 – 36 ...

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... The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein ...