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Specifications
Voltage - Supply:
4.5V~5.5V
Mfr. Part #:
AS5161-HSOP
Package:
SOIC-8
Key Attributes
Model Number:
AS5161-HSOP
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 onto a single 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 and features overvoltage and reverse polarity protection.
Product Attributes
- Brand: ams
- Product Type: 12-Bit Magnetic Angle Position Sensor
- Technology: Contactless Hall-effect
- Certifications: AEC-Q100 (referenced for ESD and input current)
Technical Specifications
| Parameter | Conditions | Min | Typ | Max | Units | Comments |
|---|---|---|---|---|---|---|
| Electrical Characteristics | ||||||
| Ambient temperature | TAMB = -40C to 150C, VDD = 4.5V to 5.5V (5V operation) | -40 | 150 | C | ||
| Supply current | 10 | mA | ||||
| Supply voltage at pin VDD | 4.5 | 5.0 | 5.5 | V | (5V operation) | |
| Magnetic input field amplitude | Required vertical component of the magnetic field strength on the dies surface, measured along a concentric circle with a radius of 1.25 mm | 30 | 70 | mT | ||
| Magnetic input field amplitude (extended) | Default setting. Increased sensor output noise. | 10 | 90 | mT | ||
| Magnetic offset | Constant magnetic stray field | 5 | mT | |||
| Displacement radius | Offset between defined device center and magnet axis including eccentricity. Dependent on the selected magnet. | 1 | mm | |||
| Electrical System Specifications | ||||||
| Resolution | PWM Output Range > 90 | 12 | bit | |||
| Integral non-linearity (optimum) | Best aligned reference magnet at 25C over full turn 360 | 0.5 | deg | |||
| Integral non-linearity (optimum) | Best aligned reference magnet over temperature -40 to 150 over full turn 360 | 0.9 | deg | |||
| Integral non-linearity | Best aligned reference magnet over temperature -40 to 150 over full turn 360 and displacement | 1.4 | deg | |||
| Differential non-linearity | Monolitic | 0.05 | deg | |||
| Output noise (360 segment) | 1 LSB after filter peak/peak rms value | 0.2 | % | |||
| Power-up time | 0-5V | 10 | ms | See Figure 10 | ||
| System propagation delay | absolute output: delay of ADC, DSP and absolute interface 10k, 100 F RC filter | 300 | s | OUT pin in HiZ First Valid Data on OUT pin | ||
| Timing Characteristics | ||||||
| WatchDog error detection time | 12 | ms | ||||
| 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-HSOP_C2153642.pdf
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