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SHT20P Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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SHT20P Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers |
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www.sensirion.com Version 4 – May 2014 1/10 Datasheet SHT20P Humidity and Temperature Sensor IC Fully calibrated Analog output, PWM interface Low power consumption Excellent long term stability DFN type package – reflow solderable Dimensions Figure 1: Drawing of SHT20P sensor package, dimensions are given in mm (1mm = 0.039inch), tolerances are ±0.1mm. The die pad (center pad) is internally connected to VSS. The NC pads must be left floating. Numbering of E/O pads starts at lower right corner (indicated by notch in die pad) and goes clockwise (compare Table 2). Sensor Chip SHT20P features a generation 4C CMOSens® chip. Besides the capacitive relative humidity sensor and the band gap temperature sensor, the chip contains an amplifier, A/D converter, OTP memory and a digital processing unit. Material Contents While the sensor itself is made of Silicon the sensors’ housing consists of a plated Cu lead-frame and green epoxy-based mold compound. The device is free of Pb, Cd and Hg – hence it is fully RoHS and WEEE compliant. Additional Information Additional information such as Application Notes is available from the web page www.sensirion.com/SHT20 . For more information please contact Sensirion via info@sensirion.com. 1.0 1.0 2.4 0.3 0.4 1.1 SCL SDA NC NC VSS VDD Bottom View 3.0 2.2 1.4 max 0.3 typ Product Summary The SHT20P 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 analog Pulse Width Modulated (PWM) 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. The PWM signal runs on a base frequency of 120Hz, the data signal is provided on SDA line. Pulling SCL high or low allows for switching between humidity and temperature, respectively. The sensor measures twice per second. The PWM signal may be converted to an analog ratiometric interface by adding a low pass filter. Every sensor is individually calibrated and tested. Lot identification is printed on the sensor. 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. |
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