SHT21 SENSIRION, SHT21 Datasheet
SHT21
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SHT21 Summary of contents
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... SDA NC For more information please contact Sensirion via info@sensirion.com. For SHT21 two Evaluation Kits are available: EK-H4, a four-channel device with Viewer Software, that also serves for data-logging, and a simple EK-H5 directly connecting one sensor via USB port to a computer. Version 1.1 – May 2010 ...
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... Relative Humidity (%RH) Figure 3 Maximal tolerance for temperature sensor in °C. Packaging Information Sensor Type typ max Units 3.0 3.6 V SHT21 0.15 0.4 µA 300 330 µA 0.5 1.2 µW 0.9 1.0 mW 3.2 - µ protocol This datasheet is subject to change and may be amended without prior notice ...
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... Datasheet SHT21 Users Guide SHT2x 1 Extended Specification For details on how Sensirion is specifying and testing accuracy performance please consult Application Note “Statement on Sensor Specification”. 1.1 Operating Range The sensor works stable within recommended Normal Range – see Figure 4. Long term exposure to conditions outside Normal Range, especially at humidity > ...
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... Datasheet SHT21 2 Application Information 2.1 Soldering Instructions The DFN’s die pad (centre pad) and perimeter I/O pads are fabricated from a planar copper lead-frame by over- molding leaving the die pad and I/O pads exposed for mechanical and electrical connection. Both the I/O pads and die pad should be soldered to the PCB ...
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... Datasheet SHT21 2.2 Storage Conditions and Handling Instructions Moisture Sensitivity Level (MSL according to IPC/JEDEC J-STD-020D.1; hence storage time is limited to one year after date of delivery great importance to understand that a humidity sensor is not a normal electronic component and needs to be handled with care. Chemical vapors at high concentration in combination with long exposure times may offset the sensor reading ...
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... Datasheet SHT21 3 Interface Specifications Pin Name Comment 1 SDA Serial Data, bidirectional 2 VSS Ground 5 VDD Supply Voltage 6 SCL Serial Clock, bidirectional 3,4 NC Not Connected Table 2 SHT2x pin assignment, NC remain floating (top view) 3.1 Power Pins (VDD, VSS) The supply voltage of SHT2x must be in the range of 2.1 – ...
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... Table 5 Timing specifications of digital input/output pads for I fast mode. Entities are displayed in Figure 12. VDD = 2.1V to 3.6V -40°C to 125°C, unless otherwise noted. 5 Communication with Sensor SHT21 communicates with true I information beyond the information in the following Sections please refer to the following website: http://www ...
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... Datasheet SHT21 5.4 Hold / No Hold Master Mode There are two different operation modes to communicate with the sensor: Hold Master mode or No Hold Master mode. In the first case the SCL line is blocked (controlled by sensor) during measurement process while in the latter case the SCL line remains open for other communication while the sensor is processing the measurement ...
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... Wikipedia. 12 bit 13 bit 5.8 11 bit SHT21 provides an electronic identification code. For ‘0’ instructions on how to read the identification code please 15 refer to the Application Note “Electronic Identification Code” – downloaded from the web page www.sensirion.com/SHT21. ...
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... The marking on the sensor consists of two lines with five specifications digits each. The first line denotes the sensor type Within (SHT21). The first digit of the second line defines the specifications output mode (D = digital, Sensibus and I Qualified SDM). The second digit defines the manufacturing year (0 = 2010 2011, etc ...
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... XXO-NN-YRRRTTTTT Quantity: RRRR RoHS: Compliant Lot No. Figure 20: First label on reel Sensor Type (21 for SHT21 Output mode (D = Digital PWM SDM Chip Version last digit of year, RRR = number of sensors on reel divided by 10 (200 for 2000 units), TTTTT = Traceability Code. Device Type: 1-100PPP-NN Description: Humidity & ...
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... Datasheet SHT21 Revision History Date Version 6 May 2009 0.3 21 January 2010 1.0 5 May 2010 1.1 Important Notices Warning, Personal Injury Do not use this product as safety or emergency stop devices or in any other application where failure of the product could result in personal injury. Do not use this product for applications other than its intended and authorized use ...