AS5147P 14-Bit On-Axis Magnetic Rotary Position Sensor
The AS5147P is a high-resolution magnetic rotary position sensor designed for high-speed angle measurement up to 28krpm over a full 360-degree range. It features integrated dynamic angle error compensation (DAEC) with near-zero latency and is robust against homogeneous external stray magnetic fields. The sensor provides 14-bit absolute angle position data via a 4-wire SPI serial interface, allowing programming of non-volatile settings without a dedicated programmer. It also offers incremental movements via ABI signals with programmable resolutions, and brushless DC (BLDC) motor control through a standard UVW commutation interface with programmable pole pairs. The AS5147P supports embedded self-diagnostics and is defined as a Safety Element out of Context (SEooC) according to ISO26262. It is available as a single die in a compact 14-pin TSSOP package.
Product Attributes
- Brand: ams
- Certifications: AEC-Q100 grade 0 automotive qualified, ISO26262 SEooC
Technical Specifications
| Parameter | Conditions | Min | Typ | Max | Units | Notes |
| Core Resolution | 14 | bit | ||||
| ABI Resolution | Programmable (ABIRES) | 10-12 | bit | 4096 steps / 1024 pulses per revolution, 2048 steps / 512 pulses per revolution, or 1024 steps / 256 pulses per revolution | ||
| Non-linearity (INLOPT) | @ 25C, optimum magnet placement | 0.8 | degree | |||
| Non-linearity (INLOPT+TEMP) | Optimum magnet placement, full temperature range | 1 | degree | |||
| Non-linearity (INLDIS+TEMP) | Displaced magnet, temperature (-40C to 150C), N35H Magnet (D=8mm, H=3mm), 500m displacement in x and y, z-distance @ 2000m | 1.2 | degree | |||
| RMS Output Noise (ONL) | Orthogonal component, specified Bz range, NOISESET = 0 | 0.068 | degree | Guaranteed by design | ||
| RMS Output Noise (ONH) | SPI, ABI and UVW interfaces, specified Bz range, NOISESET = 1 | 0.082 | degree | Guaranteed by design | ||
| RMS Output Noise (ON_PWM) | PWM interface, specified Bz range | 0.068 | degree | |||
| System Propagation Delay (tdelay) | Core reading via SPI | 90 | 110 | s | ||
| Residual System Propagation Delay (tdelay_DAEC) | After DAEC, ABI, UVW and SPI | 1.5 | 1.9 | s | ||
| Sampling Rate | Refresh rate at SPI | 202 | 247 | ns | ||
| Dynamic Angle Error (DAE1700) | At 1700 RPM constant speed | 0.02 | degree | |||
| Dynamic Angle Error (DAEmax) | At 28000 RPM constant speed | 0.36 | degree | |||
| Dynamic Angle Error (DAEacc) | At constant acceleration (25krad/s) | 0.175 | degree | 25k radians/s constant acceleration | ||
| Maximum Speed | 28000 | RPM | ||||
| Power-on Time (tpon) | Time between VDD > VDDMIN and first valid outcome | 10 | ms | Guaranteed by design | ||
| DC Supply Voltage (VDD) | 5.0V operation mode | 4.5 | 5.0 | 5.5 | V | |
| DC Supply Voltage (VDD3V3) | 3.3V operation mode; -40 to 125C | 3.0 | 3.3 | 3.6 | V | |
| DC Supply Voltage (VDD3V3_150) | 3.3V operation mode; -40 to 150C (3V150C Bit must be set) | 3.0 | 3.3 | 3.6 | V | |
| Regulated Voltage (VREG) | At VDD3V3 pin if VDD VDD3V3 | 3.2 | 3.4 | 3.6 | V | |
| Supply Current (IDD) | 15 | mA | ||||
| High-level Input Voltage (VIH) | 0.7 VDD | V | ||||
| Low-level Input Voltage (VIL) | 0.3 VDD | 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) | ABI, UVW | 1 | mA | |||
| Current on Digital Output (I_Out_MISO) | MISO | 4 | mA | |||
| Capacitive Load (C_L) | Digital output | 50 | pf | |||
| Orthogonal Magnetic Field Strength (Bz) | Required component, normal operating mode, at die surface, 1.1mm radius circle | 35 | 70 | mT | Can operate below 35mT with reduced noise performance | |
| Storage Temperature (Tstrg) | -55 | 150 | C | |||
| Package Body Temperature (Tbody) | 260 | C | IPC/JEDEC J-STD-020 | |||
| Relative Humidity (RHNC) | Non-condensing | 5 | 85 | % | ||
| Moisture Sensitivity Level (MSL) | 3 | Max floor lifetime 168h |
2411220225_AMS-AS5147P-HTSM_C481876.pdf
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