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LDC1041 Datasheet(PDF) 5 Page - Texas Instruments |
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LDC1041 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 33 page LDC1041 www.ti.com SNOSCY1 – MARCH 2014 6.5 Electrical Characteristics (1) Unless otherwise specified, all limits ensured for TA = TJ = 25°C, VDD = 5 V, VIO = 3.3 V (2) PARAMETER TEST CONDITIONS MIN(3) TYP(4) MAX(3) UNIT POWER VDD Analog supply voltage 4.75 5 5.25 V VIO IO supply voltage VIO≤VDD 1.8 3.3 5.25 V IDD Supply current, VDD Does not include sensor current.(5) 1.7 2.3 mA IVIO IO supply current Static current 14 µA IDD_LP Stand-by mode supply 250 µA current tSTART Start-Up Time From POR to ready-to-convert. 2 ms LDC ƒsensor_MIN Minimum sensor frequency 5 kHz ƒsensor_MAX Maximum sensor frequency 5 MHz Asensor_MIN Minimum sensor amplitude 1 VPP Asensor_MAX Maximum sensor amplitude 4 VPP tREC Oscillation start-up time after Rp under- Recovery time 10 1/fsensor range condition Rp Min Minimum sensor Rp range 798 Ω Rp Max Maximum Sensor Rp range 3.93 M Ω Rp Res Rp measurement resolution 8 Bits L Res Inductance measurement 24 Bits resolution tS_MIN Minimum programmable settling time of Minimum response time 192 × 1 / ƒsensor s digital filter tS_MAX Maximum programmable settling time 6144 × 1 / Maximum response time s of digital filter ƒsensor EXTERNAL CLOCK ƒ External clock frequency 8 MHz DIGITAL I/O CHARACTERISTICS VIH Logic 1 input voltage 0.8 × VIO V VIL 0.2 × Logic 0 input voltage V VIO VOH Logic 1 output voltage ISOURCE = 400 µA VIO – 0.3 V VOL Logic 0 output voltage ISINK = 400 µA 0.3 V IIOHL Digital IO leakage current –500 500 nA (1) Electrical Characteristics Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of the device such that TJ = TA. No specification of parametric performance is indicated in the electrical tables under conditions of internal self-heating where TJ > TA. Absolute Maximum Ratings indicate junction temperature limits beyond which the device may be permanently degraded, either mechanically or electrically. (2) The maximum power dissipation is a function of TJ(MAX), θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is PDMAX = (TJ(MAX) - TA)/ θJA. All numbers apply for packages soldered directly onto a PC board. The package thermal impedance is calculated in accordance with JESD 51-7. (3) Limits are specified by testing, design, or statistical analysis at 25°C. Limits over the operating temperature range are specified through correlations using statistical quality control (SQC) method. (4) Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will also depend on the application and configuration. The typical values are not tested and are not specified on shipped production material. (5) LC tank current depends on the Q-factor of the tank, distance and material of the target. Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LDC1041 |
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