as5243assu austriamicrosystems, as5243assu Datasheet
as5243assu
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as5243assu Summary of contents
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... Sin Hall Array Cos & Frontend Amplifier AS5243 www.austriamicrosystems.com 2 Key Features User programmable zero position Digital serial 10-bit absolute output 10-bit Analog output with programmable angle down to 0.088º/step Failure detection mode for magnet field strength and loss of power supply ...
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... Physical Placement of the Magnet ................................................................................................................. 27 Simulation Modeling ........................................................................................................................................... Failure Diagnostics ............................................................................................................................................. Magnetic Field Strength Diagnosis ................................................................................................................ 29 Power Supply Failure Detection ..................................................................................................................... 30 Angular Output Tolerances ................................................................................................................................. Accuracy; Digital Outputs ............................................................................................................................... 30 Accuracy; Analog Output ............................................................................................................................... 30 Transition Noise ............................................................................................................................................. 32 High Speed Operation.................................................................................................................................... 32 Output Delays ................................................................................................................................................ 33 Internal Timing Tolerance .............................................................................................................................. 33 www.austriamicrosystems.com Revision 1 ...
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... AS5243 Data Sheet - Temperature................................................................................................................................................... 33 8 Application Information ....................................................................................................................... Benefits of AS5243............................................................................................................................................. 9 Package Drawings and Markings ....................................................................................................... 10 Ordering Information......................................................................................................................... www.austriamicrosystems.com Revision 1 ...
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... AS5243 Data Sheet - Pin Assignments Figure 2. Pin Assignments (Top View) 1 CSn_Top Clk_Bottom 2 Clk_Top 3 Coil_Bottom 4 Coil_Top 5 DO_Bottom 6 DO_Top 7 V _Bottom 8 SS www.austriamicrosystems.com AS5243 Revision 1 ...
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... MagRNGn 28,29 Mode 30,31 . www.austriamicrosystems.com Description Chip Select. Active low. Schmitt-Trigger input, internal pull-up resistor (~50kΩ). This pin selects a device for serial data transmission over the SSI interface. A “logic high” at CSn forces output DO to digital tri-state. SSI Clock Input. Schmitt-Trigger input. Clock input for serial data transmission over the SSI interface ...
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... Input pin voltage ( Input current (latchup immunity) Electrostatic discharge (ESD) Storage temperature Body temperature (Lead-free package) Humidity non-condensing Ambient Temperature (T ) AMB www.austriamicrosystems.com may cause permanent damage to the device. These are stress ratings only, Min Max Units -0 VDD5V Pins MagRNGn, Mode, CSn, CLK, DO, -0 ...
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... Operating Conditions I Supply Current supp VDD5V Supply voltage at pin VDD5V Voltage regulator output VDD3V3 voltage at pin VDD3V3 www.austriamicrosystems.com Conditions 0.352 deg Maximum error with respect to the best line fit. Verified at optimum magnet placement, T =25ºC AMB Maximum error with respect to the best line fit ...
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... Tri-state leakage current OZ Resolution V Output Range OUTM1 V OUTM2 R Output Resistance OutDAC www.austriamicrosystems.com Conditions 3.3V Operation (pin VDD5V and VDD3V3 connected) Normal operation Pin CLK, VDD5V = 5.0V Pin CSn, VDD5V= 5.0V Pin Mode, VDD5V= 5.0V CMOS Input : Program Input (Prog) During programming VDD5V:5.5V CMOS Output Open Drain: MagRNGn VDD5V:4 ...
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... B Magnetic offset off Field non-linearity f mag_abs Input frequency (rotational speed of magnet) f mag_inc www.austriamicrosystems.com Conditions RefExt DAC reference = external Pin: DACref (#9) RefExtEn = 0 (default) DAC reference = internal Non-Linearity of DAC and OPAMP; -40…+150ºC, For all analog modes: 1LSB = V / 1024 REF ...
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... Integral Non-Linearity (INL) is the maximum deviation between actual position and indicated position. 3. Differential Non-Linearity (DNL) is the maximum deviation of the step length from one position to the next. 4. Transition Noise (TN) is the repeatability of an indicated position. www.austriamicrosystems.com Conditions Max. offset between defined device ...
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... Conditions Time between falling edge of CSn and data output activated Time between falling edge of CSn and first falling edge of CLK Rising edge of CLK shifts out one bit at a time Time between rising edge of CLK ...
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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 (see Figure 4). The VDD3V3 output is intended for Revision 1 ...
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... MagINC – (Magnitude Increase) becomes HIGH, when the magnet is pushed towards the IC, thus increasing the magnetic field strength. MagDEC – (Magnitude Decrease) becomes HIGH, when the magnet is pulled away from the IC, thus decreasing the magnetic field strength. www.austriamicrosystems.com 3.3V Operation VDD5V DO + MODE 3 ...
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... Off Off www.austriamicrosystems.com OCF COF LIN Status Bits Analog Output No distance change Enabled 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 Enabled the chip ...
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... The last data bit of the first device (Parity) is followed by a dummy bit and the first data bit of the second device (D9), etc. (see Figure 7). Figure 6. Daisy Chain Hardware Configuration µC Data IN Top Data IN Bottom CLK_Top_Bottom CSn_Top_Bottom www.austriamicrosystems.com slow mode (Pin MODE = 0 or open) 2.61 kHz (383µs) ≤ 0.03º rms 384µs 20ms AS5243 Top AS5243 Top ...
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... Figure 14). Note: For simplification, Figure 8 describes a linear output voltage from rail to rail (0V to VDD). In practice, this is not feasible due to saturation effects of the OPAMP output driver transistors. The actual curve will be rounded towards the supply rails (as indicated in www.austriamicrosystems.com ...
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... To enable this feature, an 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. Figure 9. Diagnostic Output Mode ...
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... VDD = positive supply voltage at receiving side (3.0 – 5.5V). Programming the AS5243 Note: A detailed description of the austriamicrosystems low voltage polyfuse OTP programming method is given in Application Note AN5000-30, which can be downloaded from the austriamicrosystems website. The OTP programming description in this datasheet is for general information only. ...
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... FB_intEN: OPAMP gain setting – 0=external, 1=internal. - RefExtEN: DAC reference – 0=internal, 1=external. - ClampMd EN: Analog output span – 0=0-100%, 1=10-90%*VDD. - Output Range (OR0, OR1): Analog Output Range Selection – [1: 360º 90º www.austriamicrosystems.com Symbol Function mbit1 Factory Bit OR0 Output Range Selection ...
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... Position Programming to provide an analog output voltage of 2.0 Volts at an angle of 180º. 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 (360º /180º /90º /45º). www.austriamicrosystems.com OTP Access Revision 1.1 Figure 10 ...
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... CSn with PDIO = low. Figure 12. Enabling the Alignment Mode PDIO CSn Figure 13. Exiting Alignment Mode PDIO CSn www.austriamicrosystems.com the output can be electrically rotated to match a given output voltage to any mechanical position 180º 270º (Figure Read-out AlignMode enable 2µ ...
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... Leave open Leave open if not used. CSn or connect to and CLK may VSS if not also be tied to used. VSS if not used. Angular Range Selector www.austriamicrosystems.com (connectors 1-3). OUT External DAC reference pin. Leave open or connect to VSS if not used. 30/31 12/13 26/27 VDD5V LDO 3 ...
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... Range1 Range0 360° angular range (default) 1023 0° 180° angular range 1023 0° www.austriamicrosystems.com Mode 512 768 1024 256 180° 270° 360° 90° 256 512 768 1024 90° 180° 270° ...
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... This programming option is useful for applications requiring a precise output voltage that is independent of supply fluctuations, for current sink outputs or for applications with a dynamic reference, e.g. attenuation of audio signals. 0-100% or 10-90% Full Scale Range www.austriamicrosystems.com Mode 256 512 768 1024 90° ...
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... OTP bits. Following this step, each rising slope of CLK outputs one bit of data in the reverse order as during programming, (see Figure 15: Output Range OR0 and -1, ClampMdEn, RefExtEn, FB_IntEn, Z0…Z9, ccw). www.austriamicrosystems.com =0V or VDD5V). The unbuffered output of OUT _DAC). This output must not be loaded. ...
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... Typically the magnet should be 6mm in diameter and ≥2.5mm in height. Magnetic materials such as rare earth AlNiCo, SmCo5 or NdFeB are recommended. The magnet’s field strength perpendicular to the die surface should be verified using a gauss-meter. The magnetic field B should be in the range of ±45mT…±75mT, www.austriamicrosystems.com Analog Readback Data at PDIO V programmed ...
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... Data Sheet - Figure 16. Typical Magnet and Magnetic Field Distribution 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 17 below. www.austriamicrosystems.com typ. 6mm diameter N S Magnet axis Magnet axis ...
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... MagRNGn (pin 28,29), 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 18. Vertical Placement of the Magnet Die surface www.austriamicrosystems.com 3.9mm 3.9mm 1 Defined ...
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... The AS5243 also offers several diagnostic and failure detection features, which are discussed in detail further in the document. Magnetic Field Strength Diagnosis By Software: The MagINC and MagDEC status bits will both be high when the magnetic field is out of range. www.austriamicrosystems.com 3.9mm±0.235mm 1 Y1 ...
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... Z-axis in the 3D-graph. min Accuracy; Analog Output The analog output has the same accuracy as the digital output with the addition of the nonlinearities of the DAC and the OPAMP (±1LSB; see Table on page www.austriamicrosystems.com – Err max Figure 21 is repeated and the accuracy (Err 8). ...
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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 these measurement was a cylindrical NdFeB (Bomatec® BMN-35H) magnet with 6mm diameter and 2.5mm in height. www.austriamicrosystems.com -400 -700 ...
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... Absolute Mode With the given sampling rates, the number of samples (n) per turn for a magnet rotating at high speed can be calculated by 1. Statistically, 1 sigma represents 68.27% of readings; 3 sigma represents 99.73% of readings. www.austriamicrosystems.com Err max ...
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... In the above described scenario, the AS5243 can automatically compensate for the change in temperature related field strength. No user adjustment is required. Accuracy Over Temperature www.austriamicrosystems.com 610rpm = 256 samples / turn 1220rpm = 128 samples / turn 2441rpm = 64 samples / turn (deg rpm * prop ...
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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 ...
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... Angle measurement with programmable range up to 360º High reliability due to non-contact magnetic sensing Ideal for applications in harsh environments Robust system, tolerant to magnet misalignment, airgap variations, temperature variations and external magnetic fields No calibration required Building of redundancy systems with plausibility checks www.austriamicrosystems.com Revision 1 ...
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... Data Sheet - Package Drawings and Markings The device is available in a QFN32LD(7x7) Package. Figure 22. Package Drawings AYWWIZZ AS5243 Table 12. QFN-32 package dimensions Symbol Min 4.18 E1 4.18 L 0. 0.80 A1 0.203 REF www.austriamicrosystems.com Typ Max Min 7 BSC 7 BSC 4.28 4.38 0.165 4.28 4.38 0.165 0.55 0.65 0.018 0.30 0.35 ...
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... AS5243 Data Sheet - Ordering Information The devices are available as the standard products shown in Table 13. Ordering Information Model Description AS5243ASSU AS5243ASST www.austriamicrosystems.com Table 13. Delivery Form Tubes Tape and Reel Revision 1.1 Package QFN32 ...
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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 ...