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MLX91209 Datasheet(PDF) 9 Page - Melexis Microelectronic Systems |
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MLX91209 Datasheet(HTML) 9 Page - Melexis Microelectronic Systems |
9 / 15 page MLX91209CA Current Sensor IC in VA package 390109120901 Page 9 of 15 MLX91209 Rev 010 March 2016 Offset temperature drift programming (OFFDR2C, OFFDR2H) Offset temperature drift caused by the output amplifier can be compensated with these two parameters. This first order correction is done independently for temperatures over and below 25°C. Note: two additional parameters (OFFDR1C, OFFDR1H) are calibrated by Melexis to compensate for the offset temperature drift caused by the Hall element (before the variable gain amplifier). These parameters should not be adjusted on customer-side. Noise filter (NOISEFILT) Setting this bit to 1 enables the noise filter, reducing noise and increasing response time. Identification code (ID) 48 bits programmable identification code. Self diagnostic The MLX91209 provides self diagnostic features to detect internal memory errors and over- / under- voltage conditions. These features increase the robustness of the IC functionality, as they prevent erroneous output signal in case of internal or external failure modes. Error Action Effect on Output Remarks Calibration Data CRC Error (at power up and in normal working mode) Fault mode High Impedance mode Pull down resistive load => Diag Low Pull up resistive load => Diag High Power On Delay High Impedance mode Max 5ms in high impedance followed by settling Undervoltage Mode IC reset High Impedance mode 300mV Hysteresis (typical) Overvoltage Detection IC reset High Impedance mode 100mV Hysteresis (typical) Table 8: Self diagnostic |
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