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Datasheet
AS5215
Programmable 360º Magnetic Angle Encoder with Buffered SINE &
COSINE Output Signals
1 General Description
The AS5215 is a redundant, contactless rotary encoder sensor for
accurate angular measurement over a full turn of 360º and over an
extended ambient temperature range of -40ºC to +150ºC.
Based on an integrated Hall element array, the angular position of a
simple two-pole magnet is translated into analog output voltages.
The angle information is provided by means of buffered sine and
cosine voltages. This approach gives maximum flexibility in system
design, as it can be directly integrated into existing architectures and
optimized for various applications in terms of speed and accuracy.
With two independent dies in one package, the device offers true
redundancy. Usually the bottom die, which is exposed to slightly less
magnetic field is employed for plausibility check.
An SSI Interface is implemented for signal path configuration as well
as a one time programmable register block (OTP), which allows the
customer to adjust the signal path gain to adjust for different
mechanical constraints and magnetic field.
2 Key Features
Contactless angular position encoding
Buffered Sine and Cosine signals
SSI Interface
Low power mode
Figure 1. AS5215 Block Diagram
PROG
CS
DCLK
DIO
ch
ni
c
Te
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Wide magnetic field input range: 20 – 80 mT
Wide temperature range: -40ºC to +150ºC
Fully automotive qualified to AEC-Q100, grade 0
Thin punched 32-pin QFN (7x7mm) package
Two programmable output modes: Differential or Single ended
3 Applications
The AS5215 is ideal for Electronic Power Steering systems and
general purpose for automotive or industrial applications in
microcontroller-based systems.
OTP Register
AS5215
Digital Part
SSI Interface
POWER
MANAGEMENT
VDD
VSS
BUFFER Stage
SINP/SINN
SINN/SINP/CM_SIN
BUFFER Stage
COSP/COSN
COSN/COSP/CM_COS
Hall Array
&
Frontend
Amplifier
Note:
This Block Diagram presents only one die.
Revision 1.11
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High precision analog output
AS5215
Datasheet - C o n t e n t s
Contents
1 General Description ..................................................................................................................................................................
5 Absolute Maximum Ratings ......................................................................................................................................................
The Linear Range ........................................................................................................................................................................ 8
Angle Error vs. Radial and Axial Misalignment.......................................................................................................................... 12
Mounting the Magnet ................................................................................................................................................................. 12
8 Application Information ...........................................................................................................................................................
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Revision 1.11
7.1 Magnet Diameter and Vertical Distance ...............................................................................................................................................
8.3 Device Communication / Programming ..............................................................................................................................................
8.4 Waveform – Digital Interface at Normal Operation Mode...................................................................................................................
8.5 Waveform – Digital Interface at Extended Mode ................................................................................................................................
8.6 Waveform – Digital Interface at Analog Readback of the Zener Diodes ............................................................................................
8.8 Analog Sin/Cos Outputs with External Interpolator ............................................................................................................................
8.9 OTP Programming and Verification ....................................................................................................................................................
9 Package Drawings and Markings ...........................................................................................................................................
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