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HTU31D Datasheet Preview

HTU31D Datasheet

Digital Relative Humidity sensor

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Key Features
High reliability and environmental
robustness
Full interchangeability with no
calibration required in standard
conditions
Quick recovery after long periods in
saturation phase
Compatible with automatic assembly
processes
Reflow solderable
Individual marking for compliance to
stringent traceability requirements
Lead free sensor
Low power consumption
Applications
Home Appliance
Medical
Printers
Humidifier
Automotive
Meteorology
Environmental Monitoring
HTU31D RH/T SENSOR IC
Digital Relative Humidity sensor with
Temperature output
Characteristics
Fully calibrated, temperature compensated
Voltage supply range from 3V to 5.5V
Typical accuracy ±2%RH and ±0.2°C
Fast response time
Compact 6-Pin DFN package
Fast I²C interface with 2 configurable addresses
Qualified according to AEC Q100 grade 1 standard
Typical power consumption down to 3.78µW
General description
Today’s demand for energy efficient sensors in appliance, consumer, industrial,
and medical applications require optimal system performance to meet
environmental and end user expectations.
The HTU31 is one of the smallest and most accurate humidity sensors on the
market. Our precision engineering and 20+ years of experience in humidity and
temperature combination sensors, enables us to provide fast response time,
precision measurement, low hysteresis and sustained performance even when
exposed to extreme temperature (-40° to 125°C) and humidity environments (0%-
100%).
The HTU31 humidity sensor includes both digital (D) and analog (V) versions,
and combines multiple functions and various interfaces (I2C, analog, voltage
output) with an application-friendly operating voltage range (3.3-5.5V with 5V
typical). The HTU31 humidity and temperature sensor is available in small and
large volumes to meet the ever-changing demands of our customers.
TE CONNECTIVITY SENSORS /// HTU31D RH/T SENSOR IC
05/2020
Page 1




TE

HTU31D Datasheet Preview

HTU31D Datasheet

Digital Relative Humidity sensor

No Preview Available !

HTU31D RH/T SENSOR IC
Digital Relative Humidity sensor with Temperature output
PERFORMANCE SPECIFICATION
Performance Specifications (Humidity)
@25°C, Vdd=5V
Characteristics
Condition
Value
Humidity Operating Range
Max1
0 to 100
Relative Humidity Accuracy
Typical
±2
Resolution
Typical
0.01
Units
%RH
%RH
%RH
Hysteresis
Response Time2
Recovery time after condensation3
Long term drift4
@25°C
±0.7

5
Typical
10
Typical
0.5
Table 1 Humidity sensor specification
Performance Specifications (Temperature)
%RH
s
s
%RH/yr
Characteristics
Temperature Operating Range
Temperature Accuracy
Resolution
Condition
Typical
Typical
Value
-40 to 125
±0.2
0.016
Units
°C
°C
°C
Response Time2
Long term drift4

10
s
Typical
0.04
°C/yr
Table 2 Temperature sensor specification
Notes / Conditions
Figure 1 Humidity sensor
rating @25°C
Table 11 Humidity and
Temperature conversion
parameters
Notes / Conditions
Figure 2 Temperature
sensor rating
Table 11 Humidity and
Temperature conversion
parameters
1 See Figure 3 Humidity and Temperature operating range
2 Under 1 m.s-1 air flow
3 Measured according to AFNOR standard NFX 15-113, under 3m.s-1 air flow
4 Typical application mean that see regular environmental variation within optimum measurement range.
TE CONNECTIVITY SENSORS /// HTU31D RH/T SENSOR IC
05/2020
Page 2


Part Number HTU31D
Description Digital Relative Humidity sensor
Maker TE
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