Product Overview
The AS5270 is a high-resolution, dual-die angular position sensor designed for precise absolute angle measurement. It utilizes Hall sensor technology to measure the orthogonal component of flux density over a full rotation and compensates for magnetic stray fields. Available with analog (AS5270A) or programmable digital (AS5270B) output interfaces (PWM or SENT-compliant), it requires a simple two-pole magnet for operation. The device offers high reliability with its dual-chip architecture and is protected against overvoltage and reverse polarity. It is ideal for automotive applications requiring accurate and robust angle sensing.
Product Attributes
- Brand: ams
- Certifications: AEC-Q100 Grade 0 qualified
Technical Specifications
| Parameter | Conditions | Min | Typ | Max | Unit | Notes | |
| Operating Conditions | |||||||
| Positive supply voltage | 4.5 | 5.0 | 5.5 | V | |||
| Regulated Voltage | VDD3V3 should not be loaded by any external DC current | 3.3 | 3.45 | 3.6 | V | ||
| Supply current | AS5270A, AGC=255 (no magnet placed) | 4 | 12 | mA | 2 times for AS5270A | ||
| Supply current | AS5270B, AGC=255 (no magnet placed) | 4 | 10 | mA | 2 times for AS5270B | ||
| Supply current at start-up | VREG = 2.25V | 2.5 | 5 | 10 | mA | ||
| Start-up time | Functional mode | 10 | ms | ||||
| Resolution and Linearity | |||||||
| Core resolution | 14 | bit | |||||
| Analog resolution | AS5270A, Range > 90 | 12 | bit | ||||
| Digital resolution | AS5270B | 12 | bit | ||||
| Integral non-linearity (optimum) | Best aligned reference magnet(2) at 25C over full turn 360 | -0.5 | 0.5 | deg | |||
| Integral non-linearity (optimum) | Best aligned reference magnet(2) over temperature -40C to 150C over full turn 360 | -0.9 | 0.9 | deg | |||
| Integral non-linearity | Best aligned reference magnet* over temperature -40C to150C over full turn 360 and displacement | -1.4 | 1.4 | deg | |||
| Output noise peak to peak | Static conditions - filter on | 1 | LSB | ||||
| Sampling time | 125 | s | |||||
| Power Management | |||||||
| 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-AS5270B-HMFM_C2153649.pdf
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