AS5270 High-Resolution On-Axis Magnetic Angular Position Sensor
The AS5270 is a dual-die, high-resolution angular position sensor for precise absolute angle measurement. It is available with an analog output interface (AS5270A) or a digital output interface (AS5270B), which can be programmed as PWM or SENT-compliant. Utilizing Hall sensor technology, it measures the orthogonal component of flux density (Bz) over a full-turn rotation and compensates for external magnetic fields with a 14-bit sensor array and analog front-end. A sub-range can be programmed for optimal resolution. Requires a simple two-pole magnet rotating over the device center. The AS5270 operates at a 5V supply voltage with overvoltage protection up to +20V and reverse polarity protection up to 20V on supply pins. The AS5270A offers high-reliability redundant operation with two independently pinned chips in the same package.
Product Attributes
- Brand: ams
- Certifications: AEC-Q100 Grade 0 qualified
Technical Specifications
| Parameter | AS5270A | AS5270B | Conditions | Min | Typ | Max | Unit | |
| Output Interface | Analog | PWM or SENT | ||||||
| Core Resolution | 14 | bit | ||||||
| Analog Resolution | 12 | Range > 90 | bit | |||||
| Digital Resolution | 12 | bit | ||||||
| Integral Non-linearity (optimum) | -0.5 to 0.5 | Best aligned reference magnet at 25C over full turn 360 | deg | |||||
| Integral Non-linearity (optimum, Temp) | -0.9 to 0.9 | Best aligned reference magnet over temperature -40C to 150C over full turn 360 | deg | |||||
| Integral Non-linearity | -1.4 to 1.4 | Best aligned reference magnet* over temperature -40C to150C over full turn 360 and displacement | deg | |||||
| Output Noise (peak to peak) | Static conditions - filter on | 1 | LSB | |||||
| Sampling Time | 125 | s | ||||||
| Positive Supply Voltage | 4.5 | 5.0 | 5.5 | V | ||||
| Regulated Voltage (VDD3V3) | 3.3 | 3.45 | 3.6 | V | ||||
| Supply Current (AS5270A) | 4 to 12 | AGC=255 (no magnet placed) | mA | |||||
| Supply Current (AS5270B) | 4 to 10 | AGC=255 (no magnet placed) | mA | |||||
| Supply Current at Start-up | VREG = 2.25V | 2.5 | 5 | 10 | mA | |||
| Start-up Time | Functional mode | 10 | ms | |||||
| VDD Undervoltage Upper Threshold | 3.5 | 4.0 | 4.5 | V | ||||
| VDD Undervoltage Lower Threshold | 3.0 | 3.5 | 4.0 | V | ||||
| VDD Undervoltage Hysteresis | 300 | 500 | 900 | mV | ||||
| VDD Undervoltage Detection Time | 10 | 50 | 250 | s | ||||
| Undervoltage Recovery Time | 10 | 50 | 250 | s | ||||
| VDD Overvoltage Upper Threshold | 6.0 | 6.5 | 7.0 | V | ||||
| VDD Overvoltage Lower Threshold | 5.5 | 6.0 | 6.5 | V | ||||
| VDD Overvoltage Hysteresis | 300 | 500 | 900 | V | ||||
| VDD Overvoltage Detection Time | From the time VDD exceeding 5.5V | 500 | 1000 | 2000 | s | |||
| VDD Overvoltage Recovery Time | From the time VDD returning from VDD > 5.5V to normal operating voltage (4.5V < VDD < 5.5V) | 500 | 1000 | 2000 | s | |||
| WatchDog Error Detection Time | 12 | ms | ||||||
2411220222_AMS-AS5270A-HMFT_C2153654.pdf
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