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HDC1050 데이터시트(PDF) 5 Page - Texas Instruments

부품명 HDC1050
상세설명  HDC1050 Low Power, High Accuracy Digital Humidity Sensor with Temperature Sensor
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HDC1050 데이터시트(HTML) 5 Page - Texas Instruments

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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
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