8 BIT PROGRAMMABLE HIGH SPEED ABSOLUTE
Magnetic Rotary Encoder
The AS5030 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 two-pole magnet,
rotating over the center of the chip is required.
The absolute angle measurement provides instant
indication of the magnet’s angular position with a
resolution of 8 bit = 256 positions per revolution. This
digital data is available as a serial bit stream and as a
PWM signal.
In addition to the angle information, the strength of the
magnetic field is also available as a 6-bit code.
Data transmission can be configured for 1-wire (PWM),
2-wires (CLK, DIO) or 3-wires (CLK, DIO, CS) .
A software programmable (OTP) zero position simplifies
assembly as the zero position of the magnet does not
need to be mechanically aligned.
A Power Down Mode together with fast startup- and
measurement cycles allows for very low average power
consumption and makes the AS5030 also suitable for
battery operated equipment.
Features
- 360°contactless angular position encoding
- Two digital 8-bit absolute outputs:
- Serial interface and
- Pulse width modulated (PWM) output
- User programmable zero position
- High speed: up to 30.000 rpm
- Direct measurement of magnetic field strength allows
exact determination of vertical magnet distance
- Serial read-out of multiple interconnected AS5030
devices using daisy chain mode
- Wide magnetic field input range: 20 – 80mT
- Wide temperature range: - 40°C to + 125°C
- Small Pb-free package: TSSOP 16
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 two-pole magnet,
rotating over the center of the chip is required.
The absolute angle measurement provides instant
indication of the magnet’s angular position with a
resolution of 8 bit = 256 positions per revolution. This
digital data is available as a serial bit stream and as a
PWM signal.
In addition to the angle information, the strength of the
magnetic field is also available as a 6-bit code.
Data transmission can be configured for 1-wire (PWM),
2-wires (CLK, DIO) or 3-wires (CLK, DIO, CS) .
A software programmable (OTP) zero position simplifies
assembly as the zero position of the magnet does not
need to be mechanically aligned.
A Power Down Mode together with fast startup- and
measurement cycles allows for very low average power
consumption and makes the AS5030 also suitable for
battery operated equipment.
Features
- 360°contactless angular position encoding
- Two digital 8-bit absolute outputs:
- Serial interface and
- Pulse width modulated (PWM) output
- User programmable zero position
- High speed: up to 30.000 rpm
- Direct measurement of magnetic field strength allows
exact determination of vertical magnet distance
- Serial read-out of multiple interconnected AS5030
devices using daisy chain mode
- Wide magnetic field input range: 20 – 80mT
- Wide temperature range: - 40°C to + 125°C
- Small Pb-free package: TSSOP 16
AS5030 datasheet
AS5035
8-bit Magnetic Rotary Encoder with Incremental Outputs
AS5035
8-bit Magnetic Rotary Encoder with Incremental Outputs
The AS5035 is a magnetic incremental encoder with 64
quadrature pulses per revolution (8-bit resolution) and
index output.
Two diagnostic outputs are provided to indicate an out-ofrange
condition of the magnetic field as well as movement
of the magnet in Z-axis. In addition a specific combination
of output states indicate a loss of power supply.
The AS5035 is available in a small 16pin SSOP package. It
can be operated at either 3.3V or 5V supplies.
Features
- Full turn (360°) contactless angular position encoder
- 2 quadrature A/B outputs with 64 pulses per revolution
(ppr), 256 edges per revolution, 1.4° per step
- Index output (one pulse per revolution)
- Accurate user programmable zero position (0.35°)
- Failure detection mode for magnet placement
monitoring and loss of power supply
- Wide temperature range: - 40°C to + 125°C
- Small lead-free package: SSOP 16 (5.3mm x 6.2mm)
quadrature pulses per revolution (8-bit resolution) and
index output.
Two diagnostic outputs are provided to indicate an out-ofrange
condition of the magnetic field as well as movement
of the magnet in Z-axis. In addition a specific combination
of output states indicate a loss of power supply.
The AS5035 is available in a small 16pin SSOP package. It
can be operated at either 3.3V or 5V supplies.
Features
- Full turn (360°) contactless angular position encoder
- 2 quadrature A/B outputs with 64 pulses per revolution
(ppr), 256 edges per revolution, 1.4° per step
- Index output (one pulse per revolution)
- Accurate user programmable zero position (0.35°)
- Failure detection mode for magnet placement
monitoring and loss of power supply
- Wide temperature range: - 40°C to + 125°C
- Small lead-free package: SSOP 16 (5.3mm x 6.2mm)
The AS5130 is a contactless magnetic rotary encoder
for accurate angular measurement over a full turn of
360º. It is a system-on-chip, combining integrated Hall
elements, analog front end and digital signal processing
in a single device. The angle can be measured using
only a simple two-pole magnet rotating over the center
of the chip. 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 8 bit = 256 positions per revolution. This
digital data is available as a serial bit stream and as a
PWM signal. The AS5130 can be operated in pulsed
mode (Vsupply=off), which reduces the average power
consumption significantly. During Vsupply=off, the
measured angle can be stored using an internal storage
register supplied by a low power voltage line. This mode
achieves very low power consumption during polling of
the rotary position of the magnet. If the position of the
magnet changes, then the motion detection feature
wakes up an external system. The device is capable of
counting the amount of magnet revolutions. The multi
turn counter value is stored in a register and can be read
in addition to the angle information. Furthermore, any
arbitrary position can be set as zero-position. The
system is tolerant to misalignment, air gap variations,
temperature variations and external magnetic fields and
high reliability due to non-contact sensing.
Features
- 360º contactless angular position encoding
- Two digital 8-bit absolute outputs:
- Serial interface
- Pulse width modulated (PWM) output
- User programmable zero position
- High speed: up to 30000 rpm
- Failure detection mode for magnet placement monitoring
and loss of power supply
- Wide temperature range: - 40ºC to +125ºC
- Multi Turn counter / Movement detection
- Small Pb-free package: SSOP-16 (5.3mm x 6.2mm)
- Automotive qualified to AEC-Q100, grade 1
AS5130 datasheet
AM256
Angular magnetic encoder IC
The AM256 is a compact solution for angular
position sensing. The IC senses the angular
position of a permanent magnet placed above the
chip. The permanent magnet must be
diametrically polarized and of cylindrical shape.
The AM256 uses Hall sensor technology to detect
the magnetic flux density distribution at the
surface of the silicon. Hall sensors are placed in a
circular array around the center of the IC and
deliver a voltage representation of the magnetic
field distribution.
The sine and cosine voltage outputs from the
sensor array vary with magnet position. The sine
and cosine signals are then converted to absolute
angle position with a fast eight bit flash
interpolator.
The absolute angle position value from the
interpolator is output through a parallel binary
interface or a serial SSI interface. The relative
changes of the angle position are output through
incremental A QUAD B encoder signals. The
resolution of incremental output is selectable
between 128 and 256 counts per turn with an
external pin
for accurate angular measurement over a full turn of
360º. It is a system-on-chip, combining integrated Hall
elements, analog front end and digital signal processing
in a single device. The angle can be measured using
only a simple two-pole magnet rotating over the center
of the chip. 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 8 bit = 256 positions per revolution. This
digital data is available as a serial bit stream and as a
PWM signal. The AS5130 can be operated in pulsed
mode (Vsupply=off), which reduces the average power
consumption significantly. During Vsupply=off, the
measured angle can be stored using an internal storage
register supplied by a low power voltage line. This mode
achieves very low power consumption during polling of
the rotary position of the magnet. If the position of the
magnet changes, then the motion detection feature
wakes up an external system. The device is capable of
counting the amount of magnet revolutions. The multi
turn counter value is stored in a register and can be read
in addition to the angle information. Furthermore, any
arbitrary position can be set as zero-position. The
system is tolerant to misalignment, air gap variations,
temperature variations and external magnetic fields and
high reliability due to non-contact sensing.
Features
- 360º contactless angular position encoding
- Two digital 8-bit absolute outputs:
- Serial interface
- Pulse width modulated (PWM) output
- User programmable zero position
- High speed: up to 30000 rpm
- Failure detection mode for magnet placement monitoring
and loss of power supply
- Wide temperature range: - 40ºC to +125ºC
- Multi Turn counter / Movement detection
- Small Pb-free package: SSOP-16 (5.3mm x 6.2mm)
- Automotive qualified to AEC-Q100, grade 1
AS5130 datasheet
AM256
Angular magnetic encoder IC
The AM256 is a compact solution for angular
position sensing. The IC senses the angular
position of a permanent magnet placed above the
chip. The permanent magnet must be
diametrically polarized and of cylindrical shape.
The AM256 uses Hall sensor technology to detect
the magnetic flux density distribution at the
surface of the silicon. Hall sensors are placed in a
circular array around the center of the IC and
deliver a voltage representation of the magnetic
field distribution.
The sine and cosine voltage outputs from the
sensor array vary with magnet position. The sine
and cosine signals are then converted to absolute
angle position with a fast eight bit flash
interpolator.
The absolute angle position value from the
interpolator is output through a parallel binary
interface or a serial SSI interface. The relative
changes of the angle position are output through
incremental A QUAD B encoder signals. The
resolution of incremental output is selectable
between 128 and 256 counts per turn with an
external pin
Features:
- Contactless angular position encoding over 360°
- Ideal for harsh environments due to magnetic
sensing
- Complete system-on-chip solution
- 8 bit absolute encoder
- Output options:
- Incremental
- Parallel
- Serial SSI
- Analogue sinusoidal
- Factory optimized linearity
- High rotational speed up to 60,000 rpm
- 5 V power supply
- Low power consumption. 13 mA typical.
- Extended operating temperature range
(-40 °C to +125 °C)
- SMD package SSOP28
- RoHS compliant (lead free)
