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MLX90288KDCCAA-000TU Datasheet(PDF) 6 Page - Melexis Microelectronic Systems |
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MLX90288KDCCAA-000TU Datasheet(HTML) 6 Page - Melexis Microelectronic Systems |
6 / 19 page MLX90288 SMD Programmable Linear Hall Sensor IC Featuring Analog Ratiometric Output 3901090288 Page 6 of 19 Rev 002 May/12 5.5 Accuracy Specification Operating parameter valid for TA = – 40°C to + 150°C & VDD = + 4.5V to + 5.5V (unless specified otherwise). Item Symbol Remark Min Typ Max Unit Output DAC Resolution LSBDAC 12 bits 0.0244 %VDD Output DAC Linearity DNLDAC – 1 + 1 LSBDAC INLDAC – 2 + 2 LSBDAC Ratiometric Error (1) OUTratiom with TEMPTC=0 – 0.1 + 0.1 %VDD with TEMPTC=128 – 0.2 + 0.2 %VDD Output Noise (2) OUTnoise RG = 4, FG = 800 FILTCODE = 4 0.12 0.18 mVRMS RG = 7, FG = 800 FILTCODE = 4 0.13 0.2 mVRMS RG = 4, FG = 4095 FILTCODE = 4 0.75 1.1 mVRMS RG = 7, FG = 4095 FILTCODE = 4 1 1.5 mVRMS Thermal Output Quiescent (Offset) Drift ∆ T V OQ RG = 4 – 10 + 10 LSBDAC RG = 5 – 10 + 10 LSBDAC RG = 6 – 15 + 15 LSBDAC RG = 7 – 20 + 20 LSBDAC Thermal Sensitivity Drift (3) ∆ T S No magnet TC – 150 0 + 150 ppm/°C Using 1 st and 2nd order magnet TC – 200 0 + 200 ppm/°C Sensitivity Thermal Hysteresis ∆ H S After full thermal excursion – 0.5 ± 0.2 + 0.5 % Table 5: Accuracy Specification (1) Ratiometric performance of the IC is measured as a difference in output voltage (expressed as %VDD) between the nominal case with VDD = 5V and the limits of the supply ratiometric operating range (4.5V and 5.5V). The difference between TEMPTC = 0 (or TEMPSENSOR disabled altogether) and TEMPTC = 128 originates in the fact that the on-chip temperature is also a function of the supply voltage. Since the TEMPTC changes the gain of the IC to compensate for the magnet TC, and it relies on the fact that the on-chip temperature is the same as the magnet temperature, an extra error occurs compared to TEMPTC = 0 case. (2) The noise measurements are performed on the recommended application diagram depicted under Section 10, with a supply voltage of 5V at room temperature. Increased capacitance values compared to the recommended application diagram, contribute to lower output noise. For peak-to- peak values, the RMS value is typically multiplied by a factor of 6. (3) The Sensitivity Thermal Drift is within these boundaries for all ICs with the default setting for gain compensation i.e. fixed to 1, which is obtained by setting TEMPTC to 0, but leaving the TEMPSENSOR bit set (see Section 7). If the value is not fixed to 1, the sensitivity of the IC will exhibit a sensitivity thermal drift curve such as the one shown in Figure 3 (if SECONDORDERTC is set) or with a linear temperature coefficient (if SECONDORDERTC is cleared) depending on the setting of TEMPTC, but ±150ppm/°C. The total system sensitivity drift is specified as ±200ppm/°C to cover resolution errors and non-linearities. |
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