MT6501CT-ADD

MT6501 Magnetic Angle Position Sensor Features and Benefits ￭ Based on advanced AMR Sensing Technology with 0°~360° Full Range Angle Sensing ￭ Contactless Angle Measurement ￭ Programmable Measurement Range ￭ Programmable Linear Transfer Characteristic ￭ Selectable Analog (Ratio metric), PWM (Pulse Width Modulation) or Switch Output (SWO) ￭ 12bit DAC/PWM Resolution ￭ 1-Wire Program Interface ￭ 3-Wire SPI Interface ￭ Over-Voltage and Over-Current Protection General Description ￭ Single Channel SOP-8 and Dual Channel (Redundant) TSSOP-16 RoHS Compliant The MagnTek rotary position sensor MT6501 is an IC based on advanced AMR magnetic sensing technology. The sensor contains two Wheatstone bridges formed by a magnet field sensing element array. A rotating magnetic field in the x-y sensor plane delivers two sinusoidal output signals indicating the angle (α) between the sensor and the magnetic field direction. Within a homogeneous field in the xy plane, the output signals are relatively independent of the physical placement in the z direction (air gap). 2011/65/EU The sensor is only sensitive to the magnetic field direction as the sensing element output is specially designed to be independent from the magnet field strength. This allows the device to be less sensitive to magnet variations, stray magnetic fields, air gap changes and off-axis misalignment. Applications ￭ Absolute Linear Position Sensor ￭ Steering Wheel Position Sensor This contactless system measures the absolute angle of a diametrically magnetized on-axis magnet. It is especially suitable for applications such as contactless potentiometer, steering angle sensor and etc. ￭ Steering Angle Sensor for EPS ￭ Pedal Position Sensor ￭ Throttle Position Sensor ￭ Contactless Potentiometer www.magntek.com.cn | Magnetic Tech Makes Magic Change 1 Rev.1.4 2020.05 MT6501 Magnetic Angle Position Sensor Table of Contents Features and Benefits………….……………..……………...…………………………………….…….………1 Applications……………………………….……….…………………………………………………………….…….1 General Description……..………………..…………………………………….…………………………………1 1 Pin Configuration…………………………..…………………..……………………………..…………….3 1.1 SOP-8 Package…….…………………….…………………...………………………………………………3 1.2 TSSOP-16 Package……………….……………………………………………………………….……….4 2 Function Description………………………………………………………………………………………5 3 Absolute Maximum Ratings……………………………………………………………………………..5 4 Electrical Characteristics…………………………………….……………………………………...……..6 5 Magnetic Input Specifications..………………………….……………………………………...……..8 6 Description of End-User Programmable Items……………………..…………..…………….9 6.1 Output Mode………….……………………………...……………………………………………9 6.1.1 Analog Output Mode…………………………..…………………...……………………..……..…..9 6.1.2 PWM Output Mode……………….….………………………...………………………………….…10 6.1.3 Switch Output Mode…………….…….………………………...…….………………………….…11 6.2 Programmable Output Transfer Characteristic…………………………………………….12 6.2.1 4-Point Transfer Function and Parameters…...……….………………………………..….13 6.2.2 Clamping Parameters…………….………………………….....………………………………….…13 7 3-Wire SPI Interface……..…...………………….…………………………………………………………………14 8 Recommended Application Diagrams………….…………………..………………………………….15 9 EEPROM Endurance……….….………………………………….……………………………………...……..16 10 Magnet Placement ……….…..……..……..………….………………………………………………….17 11 Mechanical Angle Direction….………….………………………………………….……………………….18 12 Package Information……..……………..………………………….……………………………………...……..19 12.1 SOP-8 Package……………..….……………………………...……………………………………………19 12.2 TSSOP-16 Package……….……………………………………………………………………….……….20 13 Copy Rights and Disclaimer…….……………………………………………………….……...……..21 14 Revision History…………..………………..……………..……………..….……………….…….…………………22 www.magntek.com.cn | Magnetic Tech Makes Magic Change 2 Rev.1.4 2020.05 MT6501 Magnetic Angle Position Sensor 1. Pin Configuration 1. 1 SOP-8 Package Figure 1: Pin Configuration for SOP-8 Package Pin List Name Number Type Description VDD 1 Supply 5V Supply CSN/T0 2 Digital I/O Chip Select for SPI or Test0 SWO/T1 3 Digital I/O Switch Output or Test1 SCK 4 Digital Input SPI Clock OUT 5 Analog Output Analog Output, PWM Output, OWI I/O SDAT/T2 6 Digital I/O SPI Data or Test2 T3 7 Digital I/O Test3 VSS 8 Ground Ground Family Members Part Number Description MT6501CT-ADD SOP-8 package, tube pack (100pcs/tube) or tape & reel pack (3000pcs/reel) www.magntek.com.cn | Magnetic Tech Makes Magic Change 3 Rev.1.4 2020.05 MT6501 Magnetic Angle Position Sensor 1. 2 TSSOP-16 Package 16 15 14 13 12 11 10 9 Sensing Center Die2 Die1 2.08 2.32 1 2 3 4 5 6 7 Geometry Center 8 1.65 1.89 3.11 3.35 Figure 2: Pin Configuration for TSSOP-16 Package Pin List Name Number Type Description T3_1 1 Digital I/O Die1 Test3 VSS_1 2 Ground Die1 Ground VDD_1 3 Supply Die1 5V Supply CSN_1/T0_1 4 Digital I/O Die1 SPI Enable or Test0 SWO_2/T1_2 5 Digital I/O Die2 Switch Output or Test1 OUT_2 6 Analog Output Die2 Analog or PWM Output, OWI I/O SCK_2 7 Digital Input Die2 SPI Clock SDAT_2/T2_2 8 Digital I/O Die2 SPI Data or Test2 T3_2 9 Digital I/O Die2 Test3 VSS_2 10 Ground Die2 Ground VDD_2 11 Supply Die2 5V Supply CSN_2/T0_2 12 Digital I/O Die2 SPI Enable or Test0 SWO_1/T1_1 13 Digital I/O Die1 Switch Output or Test1 SCK_1 14 Digital Input Die1 SPI Clock OUT_1 15 Analog Output Die1 Analog or PWM Output, OWI I/O SDAT_1/T2_1 16 Digital I/O Die1 SPI Data or Test2 Family Members Part Number Description MT6501GT-ADD TSSOP-16 package, tube pack (100pcs/tube) or tape & reel pack (3000pcs/reel) www.magntek.com.cn | Magnetic Tech Makes Magic Change 4 Rev.1.4 2020.05 MT6501 Magnetic Angle Position Sensor 2. Functional Description The MT6501 is manufactured in a CMOS standard process and uses advanced AMR magnet sensing technology to sense the magnetic field distribution across the surface of the chip. The integrated magnetic sensing element array delivers a voltage representation of the magnetic field at the surface of the IC. Figure 3 shows a simplified block diagram of the chip, consisting of the magnetic sensing element realized by two interleaved Wheatstone bridges to generate cosine and sine signals, gain stages, analog-to-digital converters (ADC) for signal conditioning, a digital signal processing (DSP) unit for angle calculation and digital-to-analog convert (DAC) to generate linear voltage output. Other supporting blocks such as LDO, NVM and etc. are also included. Figure 3: Block Diagram 3. Absolute Maximum Ratings (Non-Operating) Name Notes Min. Max. Unit DC Voltage at Pin VDD - -30 30 V DC Voltage at Pin Out -0.3 18 V Output Current -50 30 mA Storage Temperature - 150 ℃ Magnetic Flux Density - ±1 T Electrostatic Discharge (HBM) - ±3.5 KV www.magntek.com.cn | Magnetic Tech Makes Magic Change -40 5 Rev.1.4 2020.05 MT6501 Magnetic Angle Position Sensor 4. Electrical Characteristics Operation conditions: Ta=-40 to 150℃, VDD=4.5~5.5V unless otherwise noted. Symbol Parameter Conditions/Notes Min. Typ. Max. Unit VDD Supply Voltage - 4.5 5.0 5.5 V IDD Supply Current Single Die (SOP-8) - 6 9 mA Dual Die (TSSOP-16) - 12 18 mA Over all VDD and Ta -10 - 10 % Slow Mode - 4 - Fast Mode - 8 - Timing Specification ΔFS Clock Frequency Variation FR Analog Output Refresh Rate KHz 122 FPWM PWM Frequency (Programmable） -40~150℃ -8% /244 /488 +8% Hz /976 TSTEP TSU Slow Mode, Filter=Max. - - 1400 Slow Mode, Filter=Min. - - 1000 Fast Mode, Filter=Min. - - 600 Start-up Cycle Slow Mode - - 15 (Exclude Slew Rate Effect) Fast Mode - - 10 Analog Output Mode -15 - 15 Vout=0V - - 25 Vout=VDD - - 25 Pull-down to Ground 5 - - Pull-up to VDD 1 - - Pull-up RL≥1KΩ - 2 4 %VDD Pull-down RL≥5KΩ 95 97 - %VDD Step Response Time (Exclude Slew Rate Effect) us ms Analog Output Specification IOUT Output Current ISHORT Output Short Current RL Output Load VSAT_LO VSAT_HI Analog Output Low Saturation Level Analog Output High Saturation Level mA mA KΩ CLAMP_LO Output Clamp Low Level Programmable 2 - - %VDD CLAMP_HIGH Output Clamp High Level Programmable - - 98 %VDD SR Analog Output Slew Rate CL≤10nF - 500 - CL≤100nF - 100 - V/ms Digital Output Specification PWM_VOL PWM Output Low Level Open-drain (Iout=10mA) - - 7 %VDD GPIO_VOL GPIO Output Low Level Push-pull (Iout=5mA) - - 5 %VDD GPIO_VOH GPIO Output High Level Push-pull (Iout=5mA) 90 - - %VDD www.magntek.com.cn | Magnetic Tech Makes Magic Change 6 Rev.1.4 2020.05 MT6501 Magnetic Angle Position Sensor Symbol Parameter Conditions/Notes TRISE Digital Output Rising Time TFALL Digital Output Falling Time Push-pull (RL=10KΩ, CL=10nF) Push-pull (RL=10KΩ, CL=10nF) Min. Typ. Max. Unit - 3.0 - us - 1.8 - us Accuracy Specification INL Integral Non-Linearity Typical, See Figure 4 -1 - 1 Deg. INL_TD Integral Non-Linearity Temperature Drift Full Temperature Range -0.5 - 0.5 Deg. ANG_NOI Input-referred Noise (Excluding DAC Noise) Slow Mode, Filter=Min. - 0.01 0.02 Deg.-rms ERM Radiometric Error of Analog Output Note [1] -0.1 - 0.1 %VDD DAC_RES DAC Resolution - - 12 - Bit DAC_FS DAC Full Scale - 99 - - %VDD DAC_FS_TD DAC Full Scale Temperature Drift Full Temperature Range -0.3 - 0.3 %VDD DAC_OS DAC Output Offset - -0.5 - 0.5 %VDD DAC_OS_TD DAC Output Offset Temperature Drift Full Temperature Range -0.25 - 0.25 %VDD DAC_NOI DAC Output Noise (RMS) - - 0.03 %VDD Note [1]: The analog output is by design ratiometric, i.e. it is proportional to the supply voltage VDD. The ratiometric error is calculated as follows. ERM 𝑉𝑜𝑢𝑡 𝑉 𝑉 𝑉𝑜𝑢𝑡 5V · 100% 5𝑉 Figure 4: Drawing illustrating of INL www.magntek.com.cn | Magnetic Tech Makes Magic Change 7 Rev.1.4 2020.05 MT6501 Magnetic Angle Position Sensor 5. Magnetic Input Specifications Operation conditions: Ta=-40 to 150℃, VDD=4.5~5.5V unless otherwise noted, two-pole cylindrical diametrically magnetized source. Symbol Parameter Dmag Diameter of Magnet Tmag Thickness of Magnet Bpk Magnetic Input Field Amplitude AG Air Gap RS Rotation Speed TCmag1 Recommended magnet TCmag2 material and temperature drift coefficient Conditions/Notes Min. Typ. Max. Unit - 8.0 - mm - 2.5 - mm Measure at the IC surface 300 - 10000 Guass Magnetic to IC surface distance - - 3.0 mm - - 300 RPM NdFeB (Neodymium Iron Boron) - -0.12 - SmCo (Samarium Cobalt) - -0.035 - Recommended magnet: Ø8mm x 2.5mm for cylindrical magnets %/℃ Figure 5: Magnet Arrangement www.magntek.com.cn | Magnetic Tech Makes Magic Change 8 Rev.1.4 2020.05 MT6501 Magnetic Angle Position Sensor 6. Description of End-User Programmable Items 6.1 Output Mode The output of MT6501 is defined by the ‘Output Mode’ and ‘Switch Output Enable’ parameter. Output @Pin.5 of SOP-8 Package (Pin.6 & Pin.16 of TSSOP-16 Package) Parameter Output Mode Value Description 0 Analog Output with CLMAX=330nf 1 PWM Open-drain Output (NMOS) Output @Pin.3 of SOP-8 Package (Pin.5 & Pin.13 of TSSOP-16 Package) Parameter Switch Output Enable Value Description 0 Switch Output Mode Disabled 1 Switch Output Mode Enabled 6.1.1 Analog Output Mode VDD Clamp_high Clamp_low 0° P2 P1 360° Figure 6: Analog Output www.magntek.com.cn | Magnetic Tech Makes Magic Change 9 Rev.1.4 2020.05 MT6501 Magnetic Angle Position Sensor 6.1.2 PWM Output Mode When PWM mode is enabled, the output signal is a digital signal with Pulse-Width-Modulation as shown in Figure 7. PWM is an NMOS open-drain output, so an external pull up resistor (1KΩ~5KΩ) is necessary. The PWM signal has the resolution of 12 bit and with programmable frequency and polarity. 1 2 3 4 5 4091 4092 4093 4094 4095 PWM Min. 0°: 4096 cycles low 1 Max. 359.9x°: 4095 cycles high 1 4096 cycles 1/fPWM Figure 7: PWM Output The ‘PWM_POL’ parameter Parameter PWM Polarity Value Description 0 High Level Valid 1 Low Level Valid The ‘PWM_FREQ’ parameter Parameter Value Min. 0 Typ. (Hz) Max. 122 FPWM 1 -8% 244 +8% (PWM Frequency) 2 (Note[2]) 488 (Note[2]) 3 977 Note[2] The Min. /Max. PWM frequency is due to chip to chip variation and temperature drift. www.magntek.com.cn | Magnetic Tech Makes Magic Change 10 Rev.1.4 2020.05 MT6501 Magnetic Angle Position Sensor 6.1.3 Switch Output Mode When Switch Output Mode of the MT6501 is enabled, the output signal is a digital signal with the switch point selected by ‘SW_OP’ parameter and hysteresis selected by ‘SW_HYS’ parameter. Switch output could be enabled with Analog or PWM output at the same time. VDD Switch Output Switch Hysteresis 0 Switch Point 360° Angle Figure 8: Switch Output The ‘SW_OP’ parameter Parameter Value Description Switching Point 12 bit 9 bit integer and 3 bit decimal for degrees (