AS5043 Datasheet, PDF (1/26 Pages) ams AG – PROGRAMMABLE 360° MAGNETIC ANGLE ENCODER WITH ABSOLUTE SSI AND ANALOG OUTPUTS

AS5043 Programmable 360° Magnetic Angle Encoder
AS5043
PROGRAMMABLE 360° MAGNETIC ANGLE ENCODER
WITH ABSOLUTE SSI AND ANALOG OUTPUTS
PRELIMINARY DATA SHEET
DATA SHEET
1 General Description
The AS5043 is a contactless magnetic angle encoder for accurate
measurement up to 360°.
It is a system-on-chip, combining integrated Hall elements,
analog front end and digital signal processing in a single device.
The AS5043 provides a digital 10-bit as well as a programmable
analog output that is directly proportional to the angle of a
magnet, rotating over the chip.
The analog output can be configured in many ways, including
user programmable angular range, adjustable output voltage
range, voltage or current output, etc..
An internal voltage regulator allows operation of the AS5043 from
3.3V or 5.0V supplies.
3 Key Features
360° contactless high resolution angular position encoding
User programmable zero position
Two 10-bit absolute outputs:
Serial digital interface and
Versatile analog output
programmable angular range up to 360°
programmable ratiometric output voltage range
Failure detection mode for magnet field strength and loss of
power supply
Serial read-out of multiple interconnected AS5043 devices
using daisy chain mode
Mode input for optimizing noise vs. speed
Alignment mode for magnet placement guidance
Wide temperature range: - 40°C to + 125°C
Small package: SSOP 16 (5.3mm x 6.2mm)
Figure 1: Typical arrangement of AS5043 and magnet
2 Benefits
Complete system-on-chip
- Flexible system solution provides absolute output, both digital
and analog
- Angle measurement with software programmable range up to
360°
- High reliability due to non-contact magnetic sensing
- Ideal for applications in harsh environments
- Robust system, tolerant to magnet misalignment, airgap
variations, temperature variations and external magnetic fields
- No calibration required
4 Applications
The AS5043 is ideal for applications with an angular
travel range from a few degrees up to a full turn of
360°, such as
- Industrial applications:
- Contactless rotary position sensing
- Robotics
- Valve Controls
- Automotive applications:
- Throttle position sensors
- Gas / brake pedal position sensing
- Headlight position control
Front panel rotary switches
Replacement of potentiometers
Revision 1.4, 04-Apr-06
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