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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.
Figure 1. AS5215 Block Diagram
2 Key Features
Contactless angular position encoding
High precision analog output
Buffered Sine and Cosine signals
SSI Interface
Low power mode
Two programmable output modes: Differential or Single ended
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
3 Applications
The AS5215 is ideal for Electronic Power Steering systems and
general purpose for automotive or industrial applications in
microcontroller-based systems.
PROG
OTP Register
Digital Part
AS5215
CS
DCLK
DIO
SSI Interface
POWER
MANAGEMENT
BUFFER Stage
VDD
VSS
SINP/SINN
SINN/SINP/CM_SIN
BUFFER Stage
Hall Array
&
Frontend
Amplifier
Note: This Block Diagram presents only one die.
COSP/COSN
COSN/COSP/CM_COS
www.austriamicrosystems.com/AS5215
Revision 1.11
1 - 26
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