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GMRB6 Datasheet(PDF) 3 Page - Infineon Technologies AG |
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GMRB6 Datasheet(HTML) 3 Page - Infineon Technologies AG |
3 / 4 page GMR B6 Data Sheet 3 2000-07-01 Application Hints The application mode of the GMR position sensor is preferably as a bridge or halfbridge circuit. In every case this type of circuit compensates for the T C of the resistance value R 0. To compensate for the TC of the GMR effect ∆R/R0, if there is the necessity, is left to the application circuit and can be done for example with a NIC circuit. When operated over a complete 360 ° turn, a total signal of ≈ 20 mV/V is achieved at 25 °C with a halfbridge. The output signal is doubled to of ≈ 40 mV/V when a fullbridge circuit is used. In the case of linear position sensing, the electrical circuit remains unchanged. Maximum Ratings Parameter Symbol Value Unit Operating temperature T A – 40…+ 150 °C Storage temperature T stg – 50…+ 150 °C Supply voltage V 1 7V Thermal conductivity G thC A > 4 mW/K Magnetic field 1) H rot < 15 kA/m 1) larger fields may reduce the magnetoresistive effect irreversibly Characteristics ( T A =25 °C) Parameter Symbol Value Unit Nominal supply voltage V 1N 5V Basic resistance R 0 > 700 Ω Magnetoresistive effect H rot = 5 ... 15 kA/m ∆R/R 0 >4 % Output signal fullbridge @ V 1N =5V V OUT > 200 mV Offset voltage @ V 1N =5V | V 0|< 8 mV Temperature coefficient of basic resistance TC R0 + 0.09 … + 0.12 %/K Temperature coefficient of magnetoresistance TC∆R – 0.12 … – 0.09 %/K Temperature coefficient of magnetoresistive effect TC∆R/R0 – 0.27 … – 0.23 %/K |
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