MAQ430

MAQ430 MPSIND | Alldatasheet

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Technical content

12-Bit, Automotive Angle Sensor with ABZ & UVW Incremental Outputs MAQ430 Rev. 1.2 MonolithicPower.com 1 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved.

DESCRIPTION

The MAQ430 detects the absolute angular position of a permanent magnet, typically a diametrically magnetized cylinder on a rotating shaft. Fast data acquisition and processing provide accurate angle measurement at speeds from 0 to 60,000 rpm. The MAQ430 supports a wide range of magnetic field strengths and spat ial configurations. Both end -of-shaft and off -axis (side-shaft mounting) configurations are supported. The MAQ430 features magnetic field strength detection with programmable thresholds to allow sensing of the magnet position relative to the sensor for creation of functions such a s sensing of axial movements or for diagnostics. On-chip non -volatile memory provides storage for configuration parameters, including the reference zero angle posi tion, ABZ encoder settings, UVW pole pair emulation settings, and magnetic field detection thresholds.

FEATURES

 12-Bit Resolution Absolute Angle Encoder  Contactless Sensing for Long Life  AEC-Q100 qualified  Simple and robust design  SPI Serial Interface with parity bit for Angle Readout and Chip Configuration  Programmable Magnetic Field Strength Detection for Diagnostic Checks  Incremental 10 -Bit ABZ Quadrature Encoder Interfa ce with Programmable Pulses Per Turn from 1 to 256  UVW Interface with 1 to 8 Pole Pair Emulation  3.3V, 12mA Supply  -40°C to +150°C Operating Temperature  Available in a QFN-16 (3mmx3mm) Package with Wettable flanks

APPLICATIONS

 Brushless DC Motor Servo Drives  Motor Commutation  Motor Speed and Position Control  Automotive All MPS part s are lead -free, halogen -free, and adhere to the RoHS directive. For MPS green status, visit the MPS website under Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions ” are registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries. TYPICAL APPLICATION

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 2 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved.

ORDERING INFORMATION

Part Number* Package Top Marking MAQ430GQE-AEC1 QFN-16 (3mmx3mm) See Below * For Tape & Reel, add suffix -Z (e.g. MAQ430GQ-AEC1-Z) TOP MARKING BCV: Product code of MAQ430GQE Y: Year code LLL: Lot number PACKAGE REFERENCE TOP VIEW QFN-16 (3mmx3mm)

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 3 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. ABSOLUTE MAXIMUM RATINGS (1) Continuous power dissipation (TA = +25°C) (2) Thermal Resistance (3) θJA θJC NOTES: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature T J (MAX), the junction -to- ambient thermal resistance θ JA, and the ambient t emperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by P D (MAX) = (T J (MAX)-TA)/θJA. 3) Measured on JESD51-7, 4-layer PCB.

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 4 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameter Symbol Condition Min Typ Max Units Recommended Operating Conditions Supply voltage VDD 3.0 3.3 3.6 V Supply current IDD From -40°C to +125°C 10.2 11.7 13.8 mA Operating temperature Top -40 125 °C Applied magnetic field B 30 60 mT

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 5 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. GENERAL CHARACTERISTICS VDD = 3.3V, 45mT < B < 100mT, Temp = -40°C to +125°C, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Absolute Output – Serial Effective resolution 3σ deviation of the noise distribution 11.0 11.8 12.8 bit Noise rms 0.01 0.02 0.03 deg Refresh rate 850 980 1100 kHz Data output length 16 16 bit Response Time Power-up time (4) 12 ms Latency (5) Constant speed propagation delay 8 10 µs Filter cutoff frequency (4) Fcutoff 390 Hz Accuracy INL at 25°C At room temperature over the full field range 0.7 deg INL between -40°C to +125°C (5) Over the full temperature range and field range 1.1 deg INL at 150°C over the full field range 1.16 deg Output Drift Temperature induced drift at room temperature (5) 0.015 deg/°C Temperature induced variation (5) From 25°C to 85°C 0.5 deg From 25°C to 125°C 1.0 deg Magnetic field induced (5) 0.005 deg/mT Voltage supply induced (5) deg/V Incremental Output – ABZ ABZ update rate 16 MHz Resolution - edges per turn Programmable 4 1024 Pulses per channel per turn PPT+1 Programmable 1 256 ABZ hysteresis (5) H 0.7 deg Systematic jitter (5) For PPT = 255, between 0 and 100krpm, up to 60mT 13 % For PPT = 127, between 0 and 100krpm 7 % Random jitter (3σ) For PPT = 255, between 0 and 100krpm 5.5 % For PPT = 127, between 0 and 100krpm 2.8 % Overall ABZ jitter (5) Up to 60mT 0.3 deg Incremental Output – UVW Cycle per turn NPP 1 8 UVW hysteresis (5) H 0.7 deg UVW jitter (3σ) (5) 0.1 0.3 deg

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 6 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. GENERAL CHARACTERISTICS (continued) VDD = 3.3V, 45mT < B < 100mT, Temp = -40°C to +125°C, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Magnetic Field Detection Thresholds Accuracy (5) 5 mT Hysteresis (5) MagHys 6 mT Temperature drift (5) -600 ppm/°C Digital I/O Input high voltage VIH 2.5 5.5 V Input low voltage VIL -0.3 0.8 V Output low voltage (5) VOL IOL = 4mA 0.4 V Output high voltage (5) VOH IOH = 4mA 2.4 V Pull-up resistor RPU 46 66 97 kΩ Pull-down resistor RPD 43 55 97 kΩ Rising edge slew rate (4) TR CL = 50pF 0.7 V/ns Falling edge slew rate (4) TF CL = 50pF 0.7 V/ns NOTES: 4) Guaranteed by design. 5) Guaranteed by characteristic test.

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 7 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. TYPICAL CHARACTERISTICS VDD = 3.3V, Temp = 25°C, unless otherwise noted. ABZ Jitter at PPT = 255, tau = 1ms Noise Spectrum at 50mT Filter Transfer Function 10-5 0.0001 0.001 0.01 10 100 1000 104 105 NOISE DENSITY (deg/Hz FREQUENCY (Hz) -20 -15 -10 10 100 1000 104 105 FILTER TRANSFER FUNCTION (dB) f (Hz) -3 dB Error Curves at 50mT Non-Linearity (INL and Harmonics) Effective Resolution (3σ) 0 50 100 150 200 250 300 350 ERROR (deg) ANGLE (deg) 125°C -45°C 25°C 0.5 1.5 0 20 40 60 80 100 NON-LINEARITY (deg) MAGNETIC FIELD (mT) INL 8.5 9.5 10.5 11.5 0 20 40 60 80 100 120 EFFECTIVE RESOLUTION (bit) MAGNETIC FIELD (mT) Current Consumption at VDD = 3.3V 10.5 11.5 -50 0 50 100 150 SUPPLY CURRENT (mA) TEMPERATURE (°C)

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 8 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. PIN FUNCTIONS Package Pin # Name Description 1 V Motor commutation output. 2 A Incremental output. 3 Z Incremental output. 4 MOSI Data in (SPI). MOSI has an internal pull-down resistor. 5 CS Chip select (SPI). CS has an internal pull-up resistor. 6 B Incremental output. 7 MISO Data out (SPI). MISO has an internal pull -down resistor that is enabled at a high impedance state. 8 GND Supply ground. 9 W Motor commutation output. 10 TEST Connect to ground. 11 MGL Digital output indicating field strength below MGLT level. 12 SCLK Clock (SPI). SCLK has an internal pull-down resistor. 13 VDD Supply 3.3V. 14 NC No connection. Leave NC unconnected. 15 U Motor commutation output. 16 MGH Digital output indicating field strength above MGHT level.

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 9 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. BLOCK DIAGRAM Figure 1: Functional Block Diagram

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 15 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. SPI Write Register Table 5 shows the programmable 8 -bit registers. Data written to thes e registers are stored in the on -chip non -volatile memory and reloaded automatically during power on. The factory default register value s are shown in Table 6. A write register operation is constituted of two 16-bit frames. The first frame sends a write request which contains the 3-bit write command (100) followed by the 5-bit register address and the 8 -bit value (MSB first). The second frame returns the newly written register value (acknowledge). The on -chip memory is guaranteed to endure 1,000 write cycles at 25°C. It is important to wait 20ms between the first and the second frame. This is the time taken to write the non -volatile memory. Failure to implement this wait period result s in the register’s previous value being read . Note that this delay is only required after a write reques t. A r ead register request and read angle do not require this wait time. The first 16-bit SPI frame (write request) is: MSB LSB MISO Angle(15:0) command reg. address reg. value MOSI 1 0 0 A4 A3 A2 A1 A0 V7 V6 V5 V4 V3 V2 V1 V0 The second 16-bit SPI frame (response) is: reg. value MISO V7 V6 V5 V4 V3 V2 V1 V0 0 0 0 0 0 0 0 0 MSB LSB MOSI 0 The read-back register content can be used to verify the register programming. See Figure 13 for a complete transmission overview. For example, to set the value of the output rotation direction (RD) to counterclockwise (high), write register 9 by sending the following first frame: MSB LSB MISO Angle(15:0) command reg. address reg. value MOSI 1 0 0 0 1 0 0 1 1 0 0 0 0 0 0 0 Send the second frame after a 20ms wait time . If the register is correctly written, the reply is: reg. value MISO 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 MSB LSB MOSI 0 See Figure 14 for a complete example. Figure 13: Overview of Two 16-Bit Frames Write Register Operation

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 17 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. REGISTER MAP Table 5: Register Map No Hex Bin Bit 7 MSB Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 LSB 0 0x0 00000 Z(7:0) 1 0x1 00001 Z(15:8) 2 0x2 00010 BCT(7:0) 3 0x3 00011 - - - - - - ETY ETX 4 0x4 00100 PPT(1:0) ILIP(3:0) - - 5 0x5 00101 - - PPT(7:2) 6 0x6 00110 MGLT(2:0) MGHT(2:0) - - 7 0x7 00111 NPP(2:0) - - - 9 0x9 01001 RD - - - - - - - 27 0x1B 11011 MGH MGL - - - - - - Table 6: Factory Default Values No Hex Bin Bit 7 MSB Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 LSB 0 0x0 00000 0 0 0 0 0 0 0 0 1 0x1 00001 0 0 0 0 0 0 0 0 2 0x2 00010 0 0 0 0 0 0 0 0 3 0x3 00011 0 0 0 0 0 0 0 0 4 0x4 00100 1 1 0 0 0 0 0 0 5 0x5 00101 0 0 1 1 1 1 1 1 6 0x6 00110 0 0 0 1 1 1 0 0 7 0x7 00111 0 0 0 0 0 0 0 0 9 0x9 01001 0 0 0 0 0 0 0 0

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 18 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. Table 7: Programming Parameters Parameters Symbol Number of Bits Description See Table Zero setting Z 16 Sets the zero position. 8 Bias current trimming BCT 8 For side-shaft configuration: reduces the bias current of the X or Y Hall device. 11 Enable trimming X ETX 1 Biased current trimmed in the X-direction Hall device. 12 Enable trimming Y ETY 1 Biased current trimmed in the Y-direction Hall device. 12 Pulses per turn PPT 8 Number of pulses per turn of the ABZ output. 15 Index length / index position ILIP 4 Parametrization of the ABZ index pulse. Fig. 23 Magnetic field high threshold MGHT 3 Sets the field strength high threshold. 14 Magnetic field low threshold MGLT 3 Sets the field strength low threshold. 14 Number of pole pairs NPP 3 UVW cycles per turn for motor commutation. 17 Rotation direction RD 1 Determines the sensor positive direction. 10

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 19 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. REGISTER SETTINGS Zero Setting The zero position of the MagAlpha (a0) can be programmed with 1 6 bits of resolution. The angle streamed out by the MagAlpha (aout) is given by Equation (2): 0aaa rawout  (2) Where araw is the raw angle provided by the MagAlpha front end. The parameter Z(1 5:0), which is zero by default, is the complementary angle of the zero setting. In decimals, it can be written as shown in Equation (3): )0:15(216

0 Za  (3)

Table 8 shows the zero setting parameter. Table 8: Zero Setting Parameter Z(15:0) Zero pos. a0 (16-bit dec) Zero pos. a0 (deg) 0 65536 360.000 1 65535 359.995 2 65534 359.989 … … … 65534 2 0.011 65535 1 0.005 Example To set the zero position to 20 degrees, the Z(15:0) parameter shall be equ al to the complementary angle and can be calculated with Equation (4): 618952deg360 In binary, it is written as 1111 0001 1100 0111. Table 9 shows the content of registers 0 and 1. Table 9: Register Content Reg Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 0 1 1 0 0 0 1 1 1 1 1 1 1 1 0 0 0 1 Rotation Direction By default , when looking at the top of the package, the angle increases when the magnetic field ro tates clock wise (CW) (see Figure 15 and Table 10). Figure 15: Positive Rotation Direction of the Magnetic Field Table 10: Rotation Direction Parameter RD Positive Direction

0 Clockwise (CW)

1 Counterclockwise (CCW)

BCT Settings (Bias Current Trimming) Side-Shaft When the MAQ430 is mounted on the side of the magnet, the relation between the field angle and the mechanical angle is no longer directly linear. This effect is related to the fact that the tangential magnetic field is usually smaller than the radial field. Define the field ratio k with Equation (5): tan/ BBk rad (5) Where Brad is the maximum radial magnetic field, and Btan is the maximum tangential magnetic field (see Figure 16). Figure 16: Side-Shaft Field The ratio k depends on the magnet geometry and distance to the sensor. Having a k ratio different than 1 results in the sensor output response not being linear with respect to the mechanical angle. Note that the error curve has the sh ape of a double sinewave (see Figure 18). E is the amplitude of this error.

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 21 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. 1.5 2.5 3.5 4.5 0 5 10 15 20 25 30 35 40 k E (deg) Figure 19: Relation between the Error Measured with BCT = 0 and the Magnet Ratio k Sensor Orientation The dot marked on the package shows whether the radial field is aligned with the sensor coordinate X or Y (see Figure 20). Figure 20: Package Top View with X and Y Axes Determine which axis needs to be reduced (see the qualitative field distribution around a ring in Figure 16). For instance, with the arrangement depicted in Figure 20, the field along the sensor Y direction is tangential and weaker. Therefore, the X -axis should be reduced (ETX = 1 and ETY = 0 ). Note that if both ETX and ETY are set to 1 , the current bias is reduced in both directions the same way (i.e.: without side-shaft correction). Table 12: Trimming Direction Parameters ETX Enable Trimming of the X-Axis

0 Disabled

1 Enabled

ETY Enable Trimming of the Y-Axis The magnetic flags (MGL and MGH ) indicate that the magnetic field at the sen sor position is out of range, defined by t he lower and upper magnetic field thresholds, respectively MGLT and MGHT (see Figure 21). Figure 21: MGH and MGL Signals as a Function of the Field Strength MagHys, the typical hysteresis on the signals MGH and MGL , is 6mT (see Figure 24). The MGLT and MGHT thresholds are coded on three bits and stored in register 6 (see Table 13). Table 13: Register 6 Register 6 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 MGLT MGHT - - The 3 -bit values of MGLT and MGHT correspond to the magnetic field (see Table 14). Table 14: MGLT and MGHT Binary to mT Relation MGLT or MGHT (8) Field threshold in mT (7) From low to high magnetic. field From high to low magnetic. field 000 26 20 001 41 35 010 56 50 011 70 64 100 84 78 101 98 92 110 112 106 111 126 120 NOTES: 7) Valid for VDD = 3.3V. If different , then the field threshold is scaled by the factor VDD/3.3V. 8) MGLT can have a larger value than MGHT. The alarm flags MGL and MGH can be read in register 27 (bit 6 and bit 7), and their logic state

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 22 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. is also given at the digital output pin s 11 and 16.

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 23 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. To read the MGL and MGH flags via the SPI, send the 8-bit command write to register 27: command reg. address MSB value LSB 0 1 0 1 1 0 1 1 0 0 0 0 0 0 0 0 The MAQ430 answers with the register 27 content in the next transmission: Register 27 [7:0] MGH MGL x x MG1L MG2L x x The logic state of the MGL and MGH flags has no effect on the angle output. Pulses with a duration of about 1.3μs to 1.5μs appear randomly in the MGL signal. They appear on both the pin and register values (Register 27, bit 6). These pulses appear around angle values of 44, 138, 224, and 318 degrees (sensor output) or in an inter val of ±1.5 degree s around these values. These pulses have an amplitude of 3.3V (VDD). The minimum interval between two pulses is 100μs. MGL Workarounds 1. Invert the MGH signal to replace MGL . The MGL and MGH magnetic thresholds only differ by a small hysteresis (see Table 14 on page 22 ). An inverted MGH signal can be used to replace the MGL output in the application. 2. Read the MGL signal level twice. Using two readings, which must be between 2µs and 100µs apart, allows the user to distinguish erroneous from real trans itions. Tab le 15 shows examples of different cases. 3. Read register 27 with th e SPI and compute a corrected MGL value using MG1L and MG2L. The corrected MGL signal = not (MG1L OR MG2L). This means that the corrected MGL must be set to 1 only when both MG1L and MG2L ar e equal to 0. See the C implementation below: correctedMGL = !(MG1L | MG2L) Table 15: MGL Multiple Reading Workaround MGL First Reading MGL Second Reading (e.g. 20μs After the First Reading) True MGL Value Case 1 0 Second reading is not needed 0 Case 2 1 1 1 Case 3 1 0 0 Front-End Diagnostics If th e thresholds are set correctly , i.e. the magnetic field is between the MGLT and MGHT values, then register 27 also provides diagnostic coverage of the sensor front -end. Integrity is indicated by the follo wing values in register 27: R[7:0] 0 0 0 0 1 1 1 1 ABZ Incremental Encoder Output The MAQ430 ABZ output emulates a 10-bit incremental encoder (such as an optical encoder) providing logic pulses in quadrature (see Figure 22). Compared to signal A, signal B is shifted by a quarter of the pulse period. Over one revolution, signal A pulses N times, where N is programmable from 1 to 256 pulses per revolution. The number of pulses per channel per revolution is programmed by setting the parameter PPT, which consists of eight bits split between registers 0x4 and 0x5 (see Table 5). The factory default value is 256. Table 1 6 describes how to prog ram PPT( 7:0) to set the required resolution. Table 16: PPT PPT(7:0) Pulses per Turn Edges per Turn 00000000 1 4 MIN 00000001 2 8 00000010 3 12 00000011 4 16 … … … … 11111100 253 1012 11111101 254 1016 11111110 255 1020 11111111 256 1024 MAX For example , to set 120 pulses per revolution (480 edges), set PPT to 120 - 1 = 119 (binary: 01110111). Registers 4 and 5 must be set as shown in Table 17.

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 27 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved.

PACKAGE INFORMATION

QFN-16 (3mmx3mm)

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 28 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. APPENDIX A: DEFINITIONS Effective Resolution (3σ noise level) The smallest angle increment distinguishable from the noise. The resolution is measured by computing 3 times σ (the standard deviation in degrees) taken over 1 ,000 data points at a constant position. The resolution in bits is obtained with log2(360/6σ). Refresh Rate Rate at which new data points are stored in the output buffer. ABZ Update Rate Rate at which a new ABZ sate is computed. The inverse of this rate is the minimum time between 2 ABZ edges. Latency The time elapsed between the instant when the data is ready to be read and the instant at which the shaft passes that position. The lag in degrees is , where is the angular velocity in deg/s. Power-Up Time Time until the sensor delivers valid data starting at power-up. Integral Non-Linearity (INL) Maximum deviation between the average sensor output (at a fixed position) and the true mechanical angle. 100 150 200 250 300 350 400 0 100 200 300 400 500 600 700 sensor out (deg) rotor position (deg) resolution ( ± 3 ) ideal sensor output INL lag sensor out best straight fit It can be obtained from the error curve , where is the av erage ove r 1 ,000 sensor output s, and is the mechanical angle indicated by a high precision encoder (<0.001 deg). The INL is then computed with: ))(min())(max( aerraerrINL  (A1) Drift Angle variation rate when one parameter is changed (e.g.: temperature, VDD) and all the others, including the shaft angle, are maintained constant.

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS MAQ430 Rev. 1.2 www.MonolithicPower.com 29 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved. APPENDIX B: SPI COMMUNICATION CHEATSHEET Read Angle Read Register Write Register

MAQ430 – 12-BIT, AUTOMOTIVE ANGLE SENSOR WITH ABZ & UVW OUTPUTS Notice: The information in thi s document is subject to change without notice. Us ers should warrant and guarantee that third- party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MAQ430 Rev. 1.2 www.MonolithicPower.com 30 8/8/2022 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2022 MPS. All Rights Reserved.

REVISION HISTORY

Revision # Revision Date Description Pages Updated 1.0 4/20/2018 Initial Release - 1.1 6/22/2021 Updated the operation temperature to 150°C. 1 Updated the maximum junction temperature and storage temperature. 3 Added INL characteristic at 150°C in Electrical Characteristics section. 5 1.2 8/8/2022 Updated legal notice; updated Typical Application figure. 1 Added pull-up resistor parameter in General Characteristics table. 6 Updated ABZ Jitter, Noise Spectrum, and Non-Linearity plots. 7 Updated the MGL hysteresis direction in Figure 21. 21 Updated Magnetic Field Thresholds section; added MGL Application Note section, MGL Workarounds section, and Table 15. Updated ABZ Incremental Encoder Output section. 23 Minor formatting updates. All