Digital Humidity and Temperature Sensor - SHT21

Size: 3 x 3 x 1.1 mm
Output: I2C digital, PWM, SDM
Supply voltage range: 2.1 to 3.6 V
Energy consumption: 3.2μW (at 8 bit, 1 measurement / s)
RH operating range: 0 - 100% RH
T operating range: -40 to +125°C (-40 to +257°F)
RH response time: 8 sec (tau63%)

  • Model Number: SHT21
  • Data Sheet: Date Sheet File
Quantity:
- +
  • Digital Humidity and Temperature Sensor
Mouse over image to zoom
Share:

Product Specification

SHT21 Digital Humidity and Temperature Sensor Product Summary
The SHT21 humidity and temperature sensor of Sensirion has become an industry standard in terms of form factor and intelligence: Embedded in a reflow solderable Dual Flat No leads (DFN) package of 3 x 3mm foot print and 1.1mm height it provides calibrated, linearized sensor signals in digital, I2C format.

The SHT2x sensors contain a capacitive type humidity sensor, a band gap temperature sensor and specialized analog and digital integrated circuit – all on a single CMOSens ? chip. This yields in an unmatched sensor performance in terms of accuracy and stability as well as minimal power consumption.

Every sensor is individually calibrated and tested. Lot identification is printed on the sensor and an electronic identification code is stored on the chip – which can be read out by command. Furthermore, the resolution of SHT2x can be changed by command (8/12bit up to 12/14bit for RH/T) and a checksum helps to improve communication reliability.

With this set of features and the proven reliability and long-term stability, the SHT2x sensors offer an outstanding performance-to-price ratio. For testing SHT2x two evaluation kits EK-H4 and EK-H5 are available.

SHT21 Digital Humidity and Temperature Sensor FEATURES
? Fully calibrated
? Digital output, I2C interface
? Low power consumption
? Excellent long term stability
? DFN type package – reflow solderable

SHT21 Digital Humidity and Temperature Sensor Performance
Relative Humidity

Parameter
Condition
Value
Units
Resolution
12 bit
0.04
%RH
8 bit
0.7 %RH
Accuracy tolerance
typ
±2
%RH
max
see Figure 2
%RH
Repeatability

±0.1
%RH
Hysteresis

±1
%RH
Nonlinearity

<0.1
%RH
Response time
τ63%
8 s
Operating Range
extended
0 to 100
%RH
Long Term Drift
Typ.
< 0.25
%RH/yr


Temperature
Parameter
Condition
Value
Units
Resolution
14 bit
0.01 °C
12 bit
0.04 °C
Accuracy tolerance
typ
±0.3
°C
max
see Figure 3

Repeatability

±0.1
°C
Operating Range
extended
-40 to 125
°C
Response Time
τ63%
5 to 30
s
Long Term Drift
Typ.
< 0.02
°C/yr


Electrical Specification
Parameter
Conditions
min
typ
max
Units
Supply Voltage, VDD

2.1 3.0 3.6 V
Supply Current, IDD
sleep mode
- 0.15 0.4 μA
measuring
200 300 330 μA
Power Dissipation
sleep mode
- 0.5 1.2 μW
measuring
0.6 0.9 1.0 mW
average 8bit
- 3.2
- μW
Heater
VDD = 3.0 V
5.5mW, ΔT = + 0.5-1.5°C
Communication
digital 2-wire interface, I2C protocol


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

If you cannot find what you want, you can entrust ISweek to source for you. Just click:

Sourcing Service
久久亚洲精品成人777大小说| 亚洲精品色播一区二区| 精品国产免费观看一区| 日韩一级精品视频在线观看| 精品久久洲久久久久护士 | 亚洲AV无码精品国产成人| 中文国产成人精品久久96| 2020天堂在线亚洲精品专区| AV无码精品一区二区三区宅噜噜| 国产精品成人免费一区二区| 99久在线精品99re6视频| 国内精品久久久久久不卡影院| 人妻熟妇乱又伦精品视频APP| 久久99精品视免费看| 久久狠狠一本精品综合网| 精品国产福利在线观看91啪| 亚洲一区二区三区国产精品无码| 亚洲精品国产精品乱码不99| 亚洲国产精品自产在线播放 | 国产在线精品一区二区在线观看| 国产四虎精品8848hh| 国产精品久久久久无码av| 亚洲精品私拍国产福利在线| 中国精品18videosex性中国| 亚洲国产精品毛片av不卡在线| 日韩精品亚洲专区在线影视| 免费精品国产日韩热久久| 久久亚洲AV无码精品色午夜麻豆| 国产精品久久久久AV福利动漫| 惠民福利中文字幕人妻无码乱精品 | 国产精品视频全国免费观看| 国产精品情侣自拍| 国产精品久久久久久精品三级| 国产精品真实对白精彩久久| 久久久免费精品re6| 无码aⅴ精品一区二区三区浪潮| 国产亚洲精品美女久久久| 自拍偷在线精品自拍偷| 久久久久国产精品嫩草影院 | 亚洲国产成人一区二区精品区| 国产精品一级毛片无码视频|