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Datasheet SHT1x (SHT10, SHT11, SHT15)

Humidity and Temperature Sensor Fully calibrated Digital output Low power consumption Excellent long term stability SMD type package – reflow solderable

Product Summary SHT1x (including SHT10, SHT11 and SHT15) is Sensirion’s family of surface mountable relative humidity and temperature sensors. The sensors integrate sensor elements plus signal processing on a tiny foot print 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 SHT1x 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 tiny size and low power consumption makes SHT1x the ultimate choice for even the most demanding applications. SHT1x is supplied in a surface-mountable LCC (Leadless Chip Carrier) which is approved for standard reflow soldering processes. The same sensor is also available with p ins ( SHT7x ) or on flex p rint ( SHTA1 ) . Dimensions Sensor Chip SHT1x V4 – for which this datasheet applies – features a version 4 Silicon sensor chip. Besides a humidity and a temperature sensor the chip contains an amplifier, A/D converter, OTP memory and a digital interface. V4 sensors can be identified by the alpha-numeric traceability code on the sensor cap – see example “A5Z” code on Figure 1.
±0.1 1.5 ±0.2 2.0 ±0.1 1.5 ±0.1 sensor opening 2.5 ±0.1 0.95 NC ±0.1 Material Contents
1.27 1 While the sensor is made of a CMOS chip the sensor housing consists of an LCP cap with epoxy glob top on an FR4 substrate. The device is fully RoHS and WEEE compliant, thus it is free of Pb, Cd, Hg, Cr(6+), PBB and PBDE.
±0.05 ±0.1 ±0.05 2 NCNCNCNCNC 0.6 4.2

A5Z

3 MAX

Flyer Humidity Sensors SHT1x (RH&T) - 15453 11

±0.2 7.47 2.2 4 5.2 ±0.05 Evaluation Kits
1.83 For sensor trial measurements, for qualification of the sensor or even experimental application of the sensor there is an evaluation kit
3.3 ±0.1 2.6 MAX EK-H2 available including sensor, hard and software to interface with a computer. For more sophisticated and demanding measurements a multi port evaluation kit
4.93 ±0.05 0.8 ±0.1 EK-H3 is available which allows for parallel application of up to 20 sensors.
Figure 1: Drawing of SHT1x sensor packaging, dimensions in mm (1mm = 0.039inch). Sensor label gives “11” for SHT11 as an example. Contacts are assigned as follows: 1:GND, 2:DATA, 3:SCK, 4:VDD. www.sensirion.com Version 4.1 – September 2008