AS5040(2004) 查看數據表（PDF） - austriamicrosystems AG
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AS5040 Datasheet PDF : 20 Pages
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AS5040 10-BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER
AS5040
10 BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER
DATA SHEET
Key Features
- Contact-less high resolution encoding over a full turn of
360 degrees
- Flexible system due to user programmable incremental
output modes:
- 10, 9, 8 or 7 bit user programmable resolution
- Quadrature A/B and index output signal
- Single channel output and direction indication
- U-V-W commutation signals for brush-less DC
motors
- Absolute angular position mode:
- 10-bit resolution providing 1024 absolute positions
per 360 degrees (step size ~ 0.35 deg)
- Synchronous serial interface (SSI) output for absolute
position data
- Pulse width modulated (PWM) output, duty cycle
proportional to angle
- User programmable zero / index position
- Failure detection mode for magnet placement monitoring
- Rotational speeds up to 10,000 rpm (incremental output)
- Push button functionality detects movement of magnet
in Z-axis
- Two supply voltages:
3.3 V or 5 V
- Wide temperature range:
- 40°C to + 125°C
- Small package:
SSOP 16 (5.3mm x 6.2mm)
General Description
The AS5040 is a system-on-chip, combining integrated Hall
elements, analog front end and digital signal processing in a
single device. It provides incremental output signals and the
absolute angular position of a magnet that is placed either
above or below the device.
The AS5040 can be configured to specific customer
requirements by programming the integrated OTP (one time
programmable) register. An internal voltage regulator allows
the AS5040 to operate at either 3.3 V or 5 V supplies.
Figure 1: Typical arrangement AS5040 and magnet
Benefits
- World’s smallest multiple output magnetic rotary
encoder
- Tolerant to magnetic source misalignment
- Failure detection feature
- Complete system-on-chip:
- Flexible system solution provides absolute,
incremental and PWM digital outputs
simultaneously
- minimum number of external components needed
- Serial read-out of multiple AS5040 devices using daisy
chain mode
- Ideal for applications in harsh environments due to
contact-less position sensing
Applications
- Industrial applications such as:
- Motion control
- Robotics
- Brush-less DC motor commutation
- Power tools
- Automotive applications:
- Steering wheel position sensing
- Gas pedal position sensing
- Transmission gearbox encoder
- Headlight position control
- Power seat position indicator
- Office equipment: printers, scanners, copiers
- Replacement of optical encoders
- Front panel rotary switches and potentiometers
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