12 Bit Magnetic Rotary Encoder ICs

AS5045
12 BIT PROGRAMMABLE MAGNETIC
ROTARY ENCODER

The AS5045 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
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 positions per revolution.
This digital data is available as a serial bit stream and as
a PWM signal.

An internal voltage regulator allows the AS5045 to
operate at either 3.3 V or 5 V supplies

Features
- Contactless high resolution rotational position
encoding over a full turn of 360 degrees
- Two digital 12bit absolute outputs:
- Serial interface and
- Pulse width modulated (PWM) output
- 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 AS5045
devices using Daisy Chain mode
- Tolerant to magnet misalignment and airgap
variations
- Wide temperature range: - 40°C to + 125°C
- Small Pb-free package: SSOP 16 (5.3mm x 6.2mm)

AS5045 Datasheet

AS5145
12-Bit Programmable Magnetic Rotary Encoder

The AS5145 is a contact less magnetic rotary encoder

for accurate angular measurement over a full turn of 360 degrees.
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 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 0.0879º = 4096 positions per revolution. 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.

Features
- Contact less high resolution rotational position
encoding over a full turn of 360 degrees
- Two digital 12 bit absolute outputs:
- Serial interface
- Pulse width modulated (PWM) output
- Three incremental outputs
- Quadrature A/B (10 or 12-bit) and Index output
signal (pre-programmed versions available)
- 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 gap variations
- Wide temperature range: - 40ºC to +150ºC
- Fully automotive qualified to AEC-Q100, grade 0
- Small Pb-free package: SSOP 16 (5.3mm x 6.2mm)

AS5145 Datasheet


iC-MH
12 Bit Hall Angular Encoder

Features
- Real-time system using tracking principle for up to 120.000 rpm
- Integrated hall sensors with automatic offset compensation
- 4-fold sensor arrangement for displacement tolerant assembly
- Gain control for constant output amplitude
- Interpolator with 4096 angular steps per turn (0.1° resolution)
- Programmable resolution, hysteresis, edge control, zero position
and rotational direction
- Incremental outputs with edge frequency up to 8 MHz
- RS422 outputs with AB quadrature signals with index
- Commutation signals U, V, W for brushless dc motors
- Serial interface for absolute output and programming
- SSI compatible output mode
- Integrated zapping diodes for device setup and OEM data,
programmable via serial interface
- Error output for faulty signals (loss of magnet, frequency error);
error codes accessible via serial interface
- Extended temperature range -40 to +125 °C

iC-MH Datasheet