SHT21S

SENSIRION AG
Цифровой датчик влажности, SDM
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Технические характеристики

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Диапазон измеряемой влажности
Точность при 25°C
Время отклика
Напряжение питания
Особенности
Рабочая температура
Примечания цифровой датчик влажности. SDM
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Datasheet SHT21S Humidity and Temperature Sensor IC      Fully calibrated SDM interface convertible to analog output Low power consumption Excellent long term stability DFN type package – reflow solderable 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 analog Sigma Delta Modulated (SDM) format. SDM signal is a pulse sequence that with a low pass filter may be converted into analog voltage output. The data signal is provided on SDA line. Pulling SCL high or low allows for switching between humidity and temperature, respectively. The sensor measures the physical values twice per second. 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. Dimensions Sensor Chip 3.0 SHT21S feature 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. 3.0 SHT21 D0AC4 0.3 typ 2.4 max 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. 1.4 max 1.1 2.2 0.2 0.3 NC VDD SCL 0.75 0.4 Bottom View 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 fully RoHS and WEEE compliant, e.g. free of Pb, Cd and Hg. 0.4 1.5 2.4 1.0 Additional Information 1.0 NC VSS SDA Figure 1: Drawing of SHT21S 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). www.sensirion.com Additional information such as Application Notes is available from the web page www.sensirion.com/sht21. For more information please contact Sensirion via info@sensirion.com. Version 4 – May 2014 1/10 PDF
Документация на 1-100718-01 

Datasheet SHT10, SHT11, SHT15

Дата модификации: 06.06.2014

Размер: 417.3 Кб

10 стр.

Datasheet SHT21S Humidity and Temperature Sensor IC Fully calibrated SDM interface convertible to analog output Low power consumption Excellent long term stability DFN type package – reflow solderable Product Summary SHT21S, the new humidity and temperature sensor of Sensirion is about to set new standards in terms of size 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 signals in analog Sigma Delta Modulated (SDM) format. SDM signal is a pulse sequence that with a low pass filter may be converted into analog voltage output. The data signal is provided on SDA line. Pulling SCL high or low allows for switching between humidity and temperature, respectively. The sensor measures the physical values twice per second. With a completely new designed CMOSens® chip, a reworked capacitive type humidity sensor and an improved band gap temperature sensor the performance level has been lifted even beyond the outstanding reliability level of the previous sensor generation (SHT1x and SHT7x). For example, measures have been taken to stabilize the behavior at high humidity levels. Every sensor is individually calibrated and tested. Lot identification is printed on the sensor. Dimensions Sensor Chip 3.0 SHT21S feature 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. 3.0 SHT21 S0AC4 0.3 typ 2.0 typ 1.4 typ With made improvements and the miniaturization of the sensor the performance-to-price ratio has been improved. SHT21 is also available with digital I2C or PWM interface. 0.8 typ 1.1 2.2 0.2 0.3 Bottom View NC VDD SCL 0.75 0.4 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 fully RoHS and WEEE compliant, e.g. free of Pb, Cd and Hg. 0.4 1.5 2.4 1.0 Additional Information 1.0 NC VSS SDA Figure 1: Drawing of SHT21S 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). www.sensirion.com Additional information such as Application Notes is available from the web page www.sensirion.com/sht21. For more information please contact Sensirion via info@sensirion.com. Version 3 – December 2011 1/10 PDF
Документация на SHT21S 

Datasheet SHT10, SHT11, SHT15

Дата модификации: 09.01.2012

Размер: 472.8 Кб

10 стр.

    Публикации 1

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