Product Overview
The AS5047P is a high-resolution, 14-bit on-axis magnetic rotary position sensor designed for high-speed (up to 28krpm) angle measurement over a full 360-degree range. It features integrated dynamic angle error compensation (DAEC) with near-zero latency and offers robust design to suppress external stray magnetic fields. The sensor provides absolute angle position data via a 4-wire SPI serial interface and also outputs incremental movements through ABI signals. It supports brushless DC (BLDC) motor commutation via a standard UVW interface and offers a PWM-encoded absolute angle output. The AS5047P is ideal for challenging industrial applications such as factory automation, building automation, robotics, and as an optical encoder replacement.
Product Attributes
- Brand: ams
- Product Name: AS5047P
- Package: TSSOP-14
Technical Specifications
| Parameter | Min | Typ | Max | Units | Notes |
| Electrical Characteristics | |||||
| Positive supply voltage (VDD) | 4.5 | 5.0 | 5.5 | V | 5.0V operation mode |
| Positive supply voltage (VDD3V3) | 3.0 | 3.3 | 3.6 | V | 3.3V operation mode; only from -40 to 125C |
| Regulated Voltage (VREG) | 3.2 | 3.4 | 3.6 | V | Voltage at VDD3V3 pin if VDD VDD3V3 |
| Supply current (IDD) | 15 | mA | |||
| High-level input voltage (VIH) | 0.7VDD | V | |||
| Low-level input voltage (VIL) | 0.3VDD | V | |||
| High-level output voltage (VOH) | VDD-0.5 | V | |||
| Low-level output voltage (VOL) | VSS+0.4 | V | |||
| Current on digital output (I_Out) | 1 | mA | ABI, UVW | ||
| Current on digital output MISO (I_Out_MISO) | 4 | mA | |||
| Capacitive load on digital output (C_L) | 50 | pf | |||
| Magnetic Characteristics | |||||
| Orthogonal magnetic field strength (Bz) | 35 | 70 | mT | Required orthogonal component of the magnetic field strength measured at the die's surface along a circle of 1.1mm. Operate below 35mT with reduced noise performance. | |
| System Characteristics | |||||
| Core resolution (RES) | 14 | bit | |||
| Resolution of the ABI interface (RES_ABI) | 100 | 4096 | Steps per revolution | Programmable with register setting (ABIRES) | |
| Non-linearity, optimum placement (INLOPT) | 0.8 | degree | @ 25C | ||
| Non-linearity optimum placement over temp (INLOPT+TEMP) | 1 | degree | over the full Temperature Range | ||
| Non-linearity @ displacement (INLDIS+TEMP) | 1.2 | degree | @ displacement of magnet and temperature (-40C to 150C), Assuming N35H Magnet (D=8mm, H=3mm), 500m displacement in x and y, z-distance @ 2000m | ||
| RMS output noise (ONL) | 0.068 | degree | 1 sigma. Not tested, guaranteed by design. Orthogonal component for the magnetic field within the specified range (Bz) | ||
| RMS output noise on PWM (ON_PWM) | 0.068 | degree | 1 sigma on PWM interface. Orthogonal component for the magnetic field within the specified range (Bz) | ||
| System propagation delay (tdelay) | 90 | 110 | s | Reading angle via SPI | |
| System propagation delay after DAEC (tdelay_DAEC) | 1.5 | 1.9 | s | At ABI and UVW interfaces | |
| Timing Characteristics | |||||
| Sampling rate (tsampl) | 202 | 247 | ns | Refresh rate at SPI | |
| Dynamic angle error (DAE1700) | 0.02 | degree | At 1700 RPM constant speed | ||
| Dynamic angle error (DAEmax) | 0.18 | degree | At 14500 RPM constant speed | ||
| Dynamic angle error (DAEacc) | 0.175 | degree | at constant acceleration (25krad/s) | ||
| Maximum speed (MS) | 28000 | RPM | |||
| Power-on time (tpon) | 10 | ms | Time frame between VDD > VDDmin and first valid angular value. Not tested, guaranteed by design | ||
2410121953_AMS-AS5047P-ATSM_C962063.pdf
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