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HDC1050 데이터시트(PDF) 5 Page - Texas Instruments |
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HDC1050 데이터시트(HTML) 5 Page - Texas Instruments |
5 / 25 page HDC1050 www.ti.com SNAS658B – MAY 2015 – REVISED JULY 2015 7.5 Electrical Characteristics (1) The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. TA = 30°C, RH = 40%, and VDD = 3V. PARAMETER TEST CONDITION(2) MIN(3) TYP(4) MAX(3) UNIT POWER CONSUMPTION IDD Supply Current RH measurement, bit 12 of 0x02 register = 190 220 µA 0(5) Temperature measurement, bit 12 of 0x02 160 185 µA register = 0(5) Sleep Mode 100 200 nA Average @ 1 measurement/second, RH (11 710 nA bit), bit 12 of 0x02 register = 0(5)(6) Average @ 1 measurement/second, Temp 590 nA (11 bit), bit 12 of 0x02 register = 0(5)(6) Average @ 1 measurement/second, RH 1.3 µA (11bit) +temperature (11 bit), bit 12 of 0x02 register = 1(5)(6) Startup (average on Start-up time) 300 µA IHEAT Heater Current(7) Peak current 7.2 mA Average @ 1 measurement/second, RH 50 µA (11bit) +temperature (11 bit), bit 12 of 0x02 register = 1(5)(6) RELATIVE HUMIDITY SENSOR RHACC Accuracy Refer to Figure 2 in Typical Characteristics ±3 %RH section. RHREP Repeatability(7) 14 bit resolution ±0.1 %RH RHHYS Hysteresis (8) 20% ≤ RH ≤ 60% ±1 %RH RHRT Response Time(9) t 63% (10) 30 s RHCT Conversion Time(7) 8 bit resolution 2.50 ms 11 bit resolution 3.85 ms 14 bit resolution 6.50 ms RHOR Operating Range(11) Non-condensing 0 100 %RH RHLTD Long Term Drift ±0.5 %RH/yr TEMPERATURE SENSOR TEMPACC Accuracy(7) 5°C < TA< 60°C ±0.2 ±0.4 °C TEMPREP Repeatability(7) 14 bit resolution ±0.1 °C TEMPCT Conversion Time(7) 11 bit accuracy 3.65 ms 14 bit accuracy 6.35 ms (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 guarantee 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) Register values are represented as either binary (b is the prefix to the digits), or hexadecimal (0x is the prefix to the digits). Decimal values have no prefix. (3) Limits are ensured by testing, design, or statistical analysis at 30°C. Limits over the operating temperature range are ensured 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 guaranteed on shipped production material. (5) I2C read/write communication and pull-up resistors current through SCL and SDA not included. (6) Average current consumption while conversion is in progress. (7) This parameter is specified by design and/or characterization and it is not tested in production. (8) The hysteresis value is the difference between an RH measurement in a rising and falling RH environment, at a specific RH point. (9) Actual response times will vary dependent on system thermal mass and air-flow. (10) Time for the RH output to change by 63% of the total RH change after a step change in environmental humidity. (11) Recommended humidity operating range is 20% to 60% RH. Prolonged operation outside this range may result in a measurement offset. The measurement offset will decrease after operating the sensor in this recommended operating range. Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: HDC1050 |
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