MT6813CT-PAD

MT6813 Magnetic Angle Position Sensor Features and Benefits ￭ Based on advanced AMR Sensing Technology with 0°~360° Full Range Angle Sensing ￭ Contactless Angle Measurement ￭ Independent Output Interface: I2C, SPI, Analog and PWM ￭ Programmable Linear Transfer Characteristic ￭ Programmable Zero Position ￭ 14 bit Core Resolution ￭ 12 bit DAC/PWM Resolution ￭ User Programmable Resolution & Zero Position ￭ RoHS Compliant 2011/65/EU ￭ SOP-8 or QFN-16 Package General Description The MagnTek rotary position sensor MT6813 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 x-y plane, the output signals are relatively independent of the physical placement in the z direction. Applications ￭ Absolute Linear Position Sensor ￭ BLDC Motor Control ￭ Robotics Control ￭ Contactless Potentiometer ￭ Power Tools www.magntek.com.cn | Magnetic Tech Makes Magic Change 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. A standard I2C or SPI (3-Wire or 4-Wrie) interface allows a host microcontroller to read the 14-bit absolute angle position data from MT6813. The absolute angle position is also provided as PWM output or linear analog signal proportional to VDD from a 12 bit DAC. 1 Rev 3.0 2019.11 MT6813 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 QFN-16 Package…….…………….……………………………………………………………….………….4 2 Function Diagram …………….………………………………………………………………………………5 3 Absolute Maximum Ratings…………………….……………………………………………………………..5 4 Electrical Characteristics…………………………………….……………………………………...……….…..6 5 Magnetic Input Specifications..………………………….……………………………………...……..…..7 6 Output Mode………….…………………………………………………………………..…………..………….….8 6.1 I/O Pin Configuration……………….………….…………………...……………………….………………8 6.2 Analog Output Mode…………………….………………………...……………………..………………..9 6.3 Pulse Width Modulation (PWM) Output Mode………...………………..……………………11 6.4 I2C Interface………………..……………….……………………………...…….………………………….…12 6.5 6.4.1 I2C Timing Diagram……………..…..…...…….……………..…………………..…………..….12 6.4.2 I2C Read Angle Registers….….…………………………...………………………………….…13 6.4.3 I2C Burst Read………………….….…………………………...………………………………….…14 6.4.4 I2C Write………………………..….….…………………………...………………………………….…14 SPI Interface……………...…………………………..………………………………………………………….15 6.5.1 SPI Timing Diagram…………………….………………..…….…………………………………….16 6.5.2 4-Wire SPI………...………..………….…………………………...………………………………….…17 6.5.3 3-Wire SPI…..……………………….………………..…………….…………………………………….17 6.5.4 SPI Read Angle Register…………..………………………...………………………………….…18 7 Magnet Placement……….…..……..……..………….…………………………………………………………….20 8 Mechanical Angle Direction….……….….………………………………………….……………………….21 9 Package Information……..……………..….……………………….……………………………………...……..22 9.1 SOP-8 Package………………….…..…………………………...……………………………………………22 9.2 QFN-16 Package……………..…..………………………………………………………………….……….23 10 Copy Rights and Disclaimer…….……………………………………………………………….……...……..24 www.magntek.com.cn | Magnetic Tech Makes Magic Change 2 Rev 3.0 2019.11 MT6813 Magnetic Angle Position Sensor 1. Pin Configuration 1. 1 SOP-8 Package Figure 1: Pin Configuration for SOP-8 Package Pin List Name # Type Description CSN 1 Digital Input SPI/I2C Selection HVPP 2 Analog Input OTP Programming Supply or SPI/I2C Selection OUT 3 Analog/Digital Output Analog or PWM Output VDD 4 Power Supply 3.3~5.0V Supply MOSI/SDAT/SDA 5 Digital Input/output SPI MOSI, SDAT or I2C Data MISO 6 Digital Input/output SPI MISO SCK/SCL 7 Digital Input SPI Clock or I2C Clock GND 8 Ground Ground Family Members Part Number Description MT6813CT SOP-8 Package, Tube Pack (100pcs/Tube) or Tape & Reel Pack (3000pcs/Reel) *SOP-8 Reflow Sensitivity Classification: MSL-3 www.magntek.com.cn | Magnetic Tech Makes Magic Change 3 Rev 3.0 2019.11 MT6813 Magnetic Angle Position Sensor 1. 2 QFN-16 Package Figure 2: Pin Configuration for QFN-16 Package Pin List Name # Type Description MOSI/SDA 1 Digital Input/output SPI MOSI, SDAT or I2C Data MISO 2 Digital Input/output SPI MISO SCK/SCL 3 Digital Input SPI Clock or I2C Clock GND 4 Ground Ground CSN 5 Digital Input SPI/I2C Selection NC 6 - - NC 7 - - NC 8 NC 9 - - NC 10 - - OUT 11 Analog/Digital Output Analog or PWM Output HVPP 12 Analog Input OTP Programming Supply or SPI/I2C Selection NC 13 - - NC 14 - - NC 15 - - VDD 16 Power Supply 3.3~5.0V Supply - Family Members Part Number Description MT6813QT QFN-16 Package, Reel Pack (3000pcs/Reel) *QFN-16 Reflow Sensitivity Classification: MSL-1 www.magntek.com.cn | Magnetic Tech Makes Magic Change 4 Rev 3.0 2019.11 MT6813 Magnetic Angle Position Sensor 2. Functional Diagram The MT6813 is manufactured in a CMOS standard process and uses advanced magnet sensing technology to sense the magnetic field distribution across the surface of the chip. The integrated magnetic sensing element array is placed around the center of the device and delivers a voltage representation of the magnetic field at the surface of the IC. Figure 3: Block Diagram Figure 3 shows a simplified block diagram of the chip, consisting of the magnetic sensing element modeled by two interleaved Wheatstone bridges to generate cosine and sine signals, gain stages, analog-to-digital converters (ADC) for signal conditioning, and a digital signal processing (DSP) unit. Other supporting blocks such as LDO, etc. are also included. 3. Absolute Maximum Ratings (Non-Operating) Stresses beyond those listed under “Absolute Maximum Ratings“ may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated under “Operating Conditions” is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Name Min. Max. Unit DC Voltage at Pin VDD -0.5 7 V DC Voltage at Pin HVPP -0.5 8 V Storage Temperature -55 150 ℃ Operating Temperature -40 125 ℃ Electrostatic Discharge (HBM) - ±3.0 KV Electrostatic Discharge (CDM) - ±1.5 KV www.magntek.com.cn | Magnetic Tech Makes Magic Change 5 Rev 3.0 2019.11 MT6813 Magnetic Angle Position Sensor 4. Electrical Characteristics Operation conditions: Ta=-40 to 125℃, VDD=3.0~5.5V unless otherwise noted. Symbol Parameter Conditions/Notes Min. Typ. Max. Unit VDD Supply Voltage - 3.0 3.3~5.0 5.5 V HVPP Supply Voltage - 6.75 7.0 7.25 V Idd Supply Current - - 6.0 9.0 mA INL Integral Non-Linearity Note (1) - ±1.2 ±2.0 ° TPwrUp Power-Up Time VDD Ramp