AS5200L-AMFM

AS5200L 12-Bit On-Axis Magnetic Rotary Position Sensor with Redundant I²C and PWM Outputs General Description The AS5200L is an easy to program stacked dual die magnetic rotary position sensor with redundant high-resolution 12-bit I²C or PWM outputs. This contactless system measures the absolute angle of a diametric magnetized on-axis magnet. This AS5200L is designed for contactless potentiometer applications and its robust design eliminates the influence of any homogenous external stray magnetic fields. The industry-standard I²C interface supports simple user programming of non-volatile parameters without requiring a dedicated programmer. By default the output represents a range from 0 to 360 degrees. It is also possible to define a smaller range to the output by programming a zero angle (start position) and a maximum angle (stop position). The AS5200L is also equipped with a smart low power mode feature to automatically reduce the power consumption. AS5200L is designed for automotive applications and is AEC-Q100 grade 1 qualified. To enable safety-critical applications it has two separate sensor dies in one MLF-16 (5x5) package with wettable flanks. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of this device are listed below: Figure 1: Added Value of Using AS5200L Benefits Features • Highest reliability and durability • Contactless angle measurement • Simple programming • Simple user-programmable start and stop positions over the I²C interface • Selectable output • Digital output over I²C or PWM-encoded output • Low-power consumption • Automatic entry into low-power mode • Easy setup • Automatic magnet detection • Small form factor • MLF-16 (5mm x 5mm) package with wettable flanks • Robust environmental tolerance • Wide temperature range: -40°C to 125°C ams Datasheet [v1-02] 2018-Jan-19 Page 1 Document Feedback AS5200L − General Description Applications The AS5200L is ideally suited for embedded automotive applications where the sensor output is read by a close MCU. The two separate sensor dies enable for safety-critical automotive applications like gear-shifters, contactless knobs, pedals, joysticks and other angular position measurement solutions. Block Diagram The functional blocks of this device are shown below: Figure 2: Functional Blocks of AS5200L VDD3V3_T VDD3V3_B SDA_T SCL_T SDA_B SCL_B DIR_T DIR_B Register Setting VDD5V_T VDD5V_B Low-Dropout (LDO) Regulator (internal load only) Hall Sensors I²C One-Time Programmable (OTP) Memory Analog Front-End AFE 12-bit A/D ATAN (CORDIC) Digital Processing and Filtering Automatic Gain Control (AGC) PWM OUT_T OUT_B Driver AS5200L Magnetic Core GND_T GND B Page 2 Document Feedback ams Datasheet [v1-02] 2018-Jan-19 AS5200L − Pin Assignment Pin Assignment VDD3V3_T 1 VDD3V3_B 2 OUT_T 3 13 14 AS5200L EP 7 8 NC 6 GND_B NC 5 4 GND_T OUT_B 15 16 Figure 3: MLF-16 Pin-Out 12 SCL_B 11 SCL_T 10 SDA_B 9 SDA_T Figure 4: Pin Description Pin Number Name (1) 1 VDD3V3_T 2 VDD3V3_B 3 OUT_T 4 OUT_B 5 GND_T 6 GND_B 7 NC 8 NC ams Datasheet [v1-02] 2018-Jan-19 Type Description Supply Positive voltage supply in 3.3V mode (requires an external 1-μF decoupling capacitor in 5V mode) Digital output PWM output. Fixed to VDD default. Enable in CONF Register. Supply Ground Digital input, Pull-up Do not connect Page 3 Document Feedback AS5200L − Pin Assignment Pin Number Name (1) 9 SDA_T 10 SDA_B 11 SCL_T 12 SCL_B 13 DIR_T 14 DIR_B 15 VDD5V_T 16 Type Digital input/output I²C data (consider external pull-up) Digital input I²C clock (consider external pull-up) Digital input Direction polarity (GND = angle value increases with clockwise rotation, VDD = angle value increases with counterclockwise magnet rotation) Supply Positive voltage supply in 5V mode (requires 100nF decoupling capacitor) Not connected internally Do not solder the exposed pad. Remove the exposed pad from PCB land pattern. VDD5V_B EP Description Note(s): 1. Pins with suffix _B belong to bottom die and _T to top die. Page 4 Document Feedback ams Datasheet [v1-02] 2018-Jan-19 AS5200L − Absolute Maximum Ratings Absolute Maximum Ratings 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. Figure 5: Absolute Maximum Ratings Symbol Parameter Min Max Units Comments Electrical Parameters VDD5V DC Supply Voltage at VDD5V pin -0.3 6.1 V VDD3V3 DC Supply Voltage at VDD3V3 pin -0.3 4.0 V VIO DC Supply Voltage at all digital pins -0.3 VDD+0.3 V ISCR Input current (latch-up immunity) -100 100 mA AEC-Q100-004 Continuous Power Dissipation (TA = 70°C) PT Continuous power dissipation 100 mW Electrostatic Discharge ESDHBM Electrostatic discharge HBM ±2 kV AEC-Q100-002 Temperature Ranges and Storage Conditions TSTRG Storage temperature range TBODY Package body temperature RHNC Relative humidity (non-condensing) MSL Moisture sensitivity level ams Datasheet [v1-02] 2018-Jan-19 -55 150 5 3 °C 260 °C 85 % ICP/JEDEC J-STD-020 The reflow peak soldering temperature (body temperature) is specified according to IPC/JEDEC J-STD-020 “Moisture/Reflow Sensitivity Classification for Non-hermetic Solid State Surface Mount Devices.” The lead finish for Pb-free leaded packages is “Matte Tin” (100% Sn) ICP/JEDEC J-STD-033 Page 5 Document Feedback AS5200L − Electrical Characteristics Electrical Characteristics The AS5200L magnetic position sensor integrates two completely separated stacked sensor dies. The operation conditions and following descriptions refer to a single sensor die. All limits are guaranteed. The parameters with minimum and maximum values are guaranteed with production tests or SQC (Statistical Quality Control) methods. Operating Conditions Figure 6: System Electrical Characteristics and Temperature Range Symbol Parameter VDD5V Positive supply voltage in 5.0V mode VDD3V3 Positive supply voltage in 3.3V mode Conditions Min Typ Max Units 4.5 5.0 5.5 V 3.3V operation mode 3.0 3.3 3.6 V During OTP burn procedure (2) 3.3 3.4 3.5 V 5.0V operation mode During OTP burn procedure (2) IDD Supply current in NOM (1) PM = 00 Always on 6.4 mA lDD_LPM1 Supply current in LPM1 (1) PM = 01 Polling time = 5ms 3.3 mA lDD_ LPM2 Supply current in LPM2 (1) PM = 10 Polling time = 20ms 1.8 mA lDD_ LPM3 Supply current in LPM3 (1) PM = 11 Polling time = 100ms 1.5 mA Supply current per bit for burn procedure Initial peak, 1 μs 100 mA IDD_BURN Steady burning,