'GMR' related articles 1

  1. 2008/05/10 TLE5010 - GMR Based Angular Sensor

Product Description
 The TLE5010 is a 360° angle sensor, which detects the orientation of a magnetic field.
This is achieved by measuring sine and cosine angle components with monolithic integrated GMR elements (Giant Magnetic Resistance).
Data communication is done with a bi-directional SSC interface (SPI compatible).
The sine and cosine values can be read out.
These signals can be digitally processed to calculate the angle orientation of the magnetic field (magnet).
This calculation can be done by using a cordic algorithm.
It is possible to connect more than one TLE5010 to one SSC Interface of a μC for redundancy or any other reasons.
In this case the synchronization of the connected TLE5010 is done by a broadcast command.
Each connected TLE5010 can be addressed by a dedicated chip select CS pin.
Online diagnostic functionalities are provided to ensure a reliable operation.
These are
* Angle Test (generated via test voltages feeding the ADC).
* Crossed signal paths (switchable for comparison)
* Inverted signs of bit streams
* Over and undervoltage detections

Features
* Giant MagnetoResistance based principle
* Integrated magnetic field sensing for angle measurement
* Full 0 - 360° angle measurement
* Highly accurate single bit SD-ADC
* 16 bit representation of sine / cosine values on the interface
* Bidirectional SSC interface up to 2 Mbit/s
* 3 pin SSC interface, SPI compatible with open drain
* ADCs and filters are synchronized with external commands via SSC
* Test resistors for simulating angle values
* Core supply voltage 2.5 V
* 0.25 μm CMOS technology
* Automotive qualified: -40°C to +150°C (Junction Temperature)
* Latch up immunity according JEDEC standard
* ESD > 2 kV (HBM)
* Green package with lead-free plating

Applications
Angular position sensing in automotive applications like:
* Steering Angle
* Brushless DC Motor Commutation (e.g. EPS)
* Rotary Switch
* General Angular sensing in automotive applications

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