• Digital Temperature and Humidity Sensor
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Digital Temperature and Humidity Sensor

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  • Price

    Price on request   ≥1piece

  • Model Number

    SHT71

  • Data Sheet

  • Package

    Original packaging

  • Specs

    SHT71

  • Quantity

    - +

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Product Description

SHT71 Digital Temperature and Humidity Sensor Product Summary
SHT7x (including SHT71 and SHT75) is Sensirion’s family of relative humidity and temperature sensors with pins. The sensors integrate sensor elements plus signal processing in compact format and provide a fully calibrated digital output. A unique capacitive sensor element is used for measuring relative humidity while temperature is measured by a band-gap sensor. The applied CMOSens® technology guarantees excellent reliability and long term stability. Both sensors are seamlessly coupled to a 14bit analog to digital converter and a serial interface circuit. This results in superior signal quality, a fast response time and insensitivity to external disturbances (EMC).

Each SHT7x is individually calibrated in a precision humidity chamber. The calibration coefficients are programmed into an OTP memory on the chip. These coefficients are used to internally calibrate the signals
from the sensors. The 2-wire serial interface and internal voltage regulation allows for easy and fast system integration. The small size and low power consumption makes SHT7x the ultimate choice for even the most demanding applications.

SHT7x is supplied on FR4 with pins which allows for easy integration or replacement. The same sensor is also available as surface mountable packaging (SHT1x) or on flex print (SHTA1).

SHT71 Digital Temperature and Humidity Sensor FEATURES
• Fully calibrated
• Digital output
• Low power consumption
• Excellent long term stability
• Pin type package – easy integration

SHT71 Digital Temperature and Humidity Sensor PERFORMANCE
Relative Humidity

Parameter
 Condition
 min
 typ
 max
 Units
Resolution
0.4
 0.05 0.05 %RH
8
 12 12 bit
Accuracy
 typical
±3.0 
%RH
maximal
 see Figure 2
Repeatability

±0.1
%RH
Hysteresis

±1
%RH
Non-linearity
 raw data
±3
%RH
linearized
<<1
%RH
Response time
 tau 63%
8
s
Operating Range
0
100 %RH
Long term drift
 normal
< 0.5
%RH/yr


Temperature
Parameter
 Condition
 min
 typ
 max
 Units
Resolution
0.04 0.01 0.01 °C
12 14 14 bit
Accuracy
 typical
±0.4
°C
maximal
 see Figure 3
Repeatability

±0.1 
°C
Operating Range
-40
123.8 °C
-40
254.9 
 °F
Response Time
 tau 63%
 5
30 s
Long term drift

< 0.04
°C/yr


Electrical and General Items
Parameter
 Condition
 min
 typ
 max
 Units
Source Voltage
2.4 3.3 5.5 V
Power Consumption
 sleep
2 5 µW
measuring
3
mW
average
90
µW
Communication
 digital 2-wire interface, see Communication
Storage
 10 - 50°C (0 - 80°C peak), 20 - 60%RH



Other Series:

Series

Typ. Humidity 

Accuracy %RH

Typ. Temperature

Accuracy °C

Supply Voltage Range V

Interface

Package Size

(L x W x H) mm

SHT30 ±2 ±0.2 2.4 to 5.5 I2C, analog voltage 2.5 x 2.5 x 0.9
SHT31 ±2 ±0.2 2.4 to 5.5 I2C, analog voltage 2.5 x 2.5 x 0.9
SHT35 ±1.5 ±0.1 2.4 to 5.5 I2C 2.5 x 2.5 x 0.9
SHTW1
 ±3
 ±0.4
 1.62 to 1.98
 I2C
 1.3 x 0.7 x 0.5
SHTW2 ±3 ±0.4 1.62 to 1.98 I2C 1.3 x 0.7 x 0.5
SHTC1 ±3 ±0.3 1.62 to 1.98 I2C 2 x 2 x 0.8
SHT20 ±3 ±0.3 2.1 to 3.6 I2C, PWM, SDM 3 x 3 x 1.1
SHT21 ±2 ±0.3 2.1 to 3.6 I2C, PWM, SDM 3 x 3 x 1.1
SHT25 ±1.8 ±0.2 2.1 to 3.6 I2C 3 x 3 x 1.1
SHT10* ±4.5 ±0.5 2.4 to 5.5 Digital Sbus 7.5 x 4.9 x 2.6
SHT11*

±3

±0.4 2.4 to 5.5 Digital Sbus 7.5 x 4.9 x 2.6
SHT15* ±2 ±0.3 2.4 to 5.5 Digital Sbus 7.5 x 4.9 x 2.6
SHT71 ±3 ±0.4 2.4 to 5.5 Digital Sbus 19.5 x 5.08 x 3.1
SHT75 ±1.8 ±0.3 2.4 to 5.5 Digital Sbus 19.5 x 5.08 x 3.1
*Not recommended for new design (NRND); newer products available