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Specifications
Voltage - Supply:
4.5V~5.5V
Mfr. Part #:
AS5161-HSOM
Package:
SOIC-8
Key Attributes
Model Number:
AS5161-HSOM
Product Description
Product Overview
The AS5161 is a 12-bit contactless magnetic angle position sensor designed for accurate angular measurement over a full 360 turn. It integrates Hall elements, analog front end, digital signal processing, and automotive protection features into a single system-on-chip. Requiring only a simple two-pole magnet, it provides instant absolute angle indication with a resolution of 0.022 (16384 positions per revolution). The angular output is available via a 12-bit pulse width modulated (PWM) output. The device operates at a 5V supply voltage with overvoltage protection up to +20V and reverse polarity protection up to -20V.
Product Attributes
- Brand: ams
- Product Name: AS5161 12-Bit Magnetic Angle Position Sensor
- Certifications: AEC-Q100-004 (Input current), AEC-Q100-002 (ESD)
- Material: CMOS process
Technical Specifications
| Parameter | Conditions | Min | Typ | Max | Units | Comments |
|---|---|---|---|---|---|---|
| Electrical Characteristics | ||||||
| Ambient temperature | -40 | 150 | C | |||
| Supply current | 10 | mA | ||||
| Supply voltage at pin VDD | 5V operation | 4.5 | 5.0 | 5.5 | V | |
| Magnetic input field amplitude (Bpk) | Radius 1.25 mm | 30 | 70 | mT | Required vertical component | |
| Magnetic input field amplitude (extended) | Radius 1.25 mm | 10 | 90 | mT | Increased sensor output noise | |
| Magnetic offset | Constant magnetic stray field | 5 | mT | |||
| Displacement radius | Offset between device center and magnet axis | 1 | mm | Dependent on magnet | ||
| Resolution | PWM Output Range > 90 | 12 | bit | |||
| Integral non-linearity (optimum) | Best aligned magnet, 25C, 360 | 0.5 | deg | |||
| Integral non-linearity (optimum) | Best aligned magnet, -40 to 150, 360 | 0.9 | deg | |||
| Integral non-linearity | Best aligned magnet, -40 to 150, 360 & displacement | 1.4 | deg | |||
| Differential non-linearity | Monolitic | 0.05 | deg | |||
| Output noise (360 segment) | After filter peak/peak rms value | 0.2 | % | 1 LSB | ||
| Power-up time | 0-5V | 10 | ms | See Figure 10 | ||
| System propagation delay | ADC, DSP, absolute interface | 300 | s | 10k, 100 F RC filter | ||
| Power Management - Supply Monitor | ||||||
| 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 | ||
| VDD 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 | 6.5 | V | ||
| VDD overvoltage hysteresis | 300 | 500 | 900 | mV | ||
| VDD overvoltage detection time (analog path) | 10 | 50 | 250 | s | ||
| VDD overvoltage recovery time (analog path) | 10 | 50 | 250 | s | ||
2411220232_AMS-AS5161-HSOM_C2153647.pdf
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