kak111
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AS5145 Automotive Rotary Encoder IC
The AS5145 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360°.
It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device.
To measure the angle, only a simple 2-pole magnet, rotating over the center of the chip, is required.
The magnet may be placed above or below the IC. The absolute angle measurement provides instant indication of
the magnet's angular position with a resolution of 0.0879° = 4096 postitions per revoloution.
This digital data is available as a serial bit stream and as a PWM signal.
An internal voltage regulator allows the AS5145 to operate at either 3.3V or 5V supplies.
Contactless high resolution rotational position encoding over a full turn of 360°
2 digital 12-bit absolute outputs:
Serial interface and
Pulse Width Modulated (PWM) outputs
3 incremental outputs
Quadrature A/B (10 or 12 bit) and Index output signal
User programmable zero position
Failure detection mode for magnet placement monitoring and loss of power supply
"Red-Yellow-Green"indicators display placement of magnet in Z-axis
Serial read-out of multiple interconnected AS5145 devices using Daisy Chain mode
Tolerant to magnet misalignment and arigap variations
Wide temperature range: -40°C to +150°C
Fully automotive AEC-Q100 qualified, grade 0
Small Pb-free package: SSOP16 (5.3mm x 6.2mm)
Datasheet.......
http://www.austriamicrosystems.com/eng/content/download/12890/229418/12670
The AS5145 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360°.
It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device.
To measure the angle, only a simple 2-pole magnet, rotating over the center of the chip, is required.
The magnet may be placed above or below the IC. The absolute angle measurement provides instant indication of
the magnet's angular position with a resolution of 0.0879° = 4096 postitions per revoloution.
This digital data is available as a serial bit stream and as a PWM signal.
An internal voltage regulator allows the AS5145 to operate at either 3.3V or 5V supplies.
Contactless high resolution rotational position encoding over a full turn of 360°
2 digital 12-bit absolute outputs:
Serial interface and
Pulse Width Modulated (PWM) outputs
3 incremental outputs
Quadrature A/B (10 or 12 bit) and Index output signal
User programmable zero position
Failure detection mode for magnet placement monitoring and loss of power supply
"Red-Yellow-Green"indicators display placement of magnet in Z-axis
Serial read-out of multiple interconnected AS5145 devices using Daisy Chain mode
Tolerant to magnet misalignment and arigap variations
Wide temperature range: -40°C to +150°C
Fully automotive AEC-Q100 qualified, grade 0
Small Pb-free package: SSOP16 (5.3mm x 6.2mm)
Datasheet.......
http://www.austriamicrosystems.com/eng/content/download/12890/229418/12670
