Digital Humidity Sensor SHTW2 (RH/T) (NRND)
Not Recommended for New Designs (NRND)
The SHTW2 will reach end of life and is not recommended for new designs anymore.
Last Time Buy/Delivery: 31.05.2021/31.12.2021
SHTW2 will be replaced by products from the SHT4x family (see transition guide). For more information, please contact supportsensirioncom.
Highest Performance At Smallest Power Budgets
The SHTW2 is Sensirion's 2nd generation WLCSP (wafer-level chip-scale package) humidity sensor, offering a complete digital humidity and temperature sensor system in a package so tiny that it fits into virtually any application. The SHTW2 comes in a flip chip package, which is an established technology and represents one of the simplest and smallest possible ways of packaging for a semiconductor chip. With a footprint of 1.3 x 0.7 x 0.5 mm3 the SHTW2 is only one-seventh of the size of a comparable DFN humidity sensor, which opens up a new category of ultra-small humidity sensors and enables countless new opportunities for the Internet of Things, wearable and mobile markets.
The SHTW2 is based on Sensirion’s CMOSens® Technology, which offers a complete sensor system on a single chip, consisting of a capacitive humidity sensor, a band-gap temperature sensor, analog and digital signal processing, A/D converter, calibration data memory, and a digital communication interface supporting I2C fast mode.
The humidity sensor covers a humidity measurement range of 0 to 100 %RH and a temperature measurement range of –30°C to 100°C with a typical accuracy of ±3 % RH and ±0.3 °C. The operating voltage of 1.8 V and the low power consumption make the SHTW2 humidity sensor suitable for wearable applications running on the tightest power budgets. With the industry-proven quality and reliability of Sensirion’s humidity and temperature sensors and constant accuracy over a large measurement range, the SHTW2 humidity sensor offers an unprecedented price-performance ratio. Tape and reel packaging together with its suitability for standard SMD assembly processes make the SHTW2 predestined for high-volume applications.
NOverview Specifications
| Name | Typ. Humidity Accuracy %RH | Typ. Temperature °C | Supply Voltage V | Interface | Package Size (L x W x H) mm | Datasheet | Buy |
|---|---|---|---|---|---|---|---|
| SHTW2 | ±3.0% | ±0.3 | 1.62 to 1.98 V | I2C | WLCSP, 1.3 x 0.7 x 0.5 | Download |  |
Features
| Interface | I²C |
| Supply voltage | 1.8 V |
| Power consumption | 2µW (at 1 reading per second in low power mode) |
| Measuring range (RH) | 0 - 100 % relative humidity |
| Measuring range (T) | -30 to +100°C (-22 to +212°F) |
| Response time (RH) | 8s (tau63%) |
| Package type | Wafer-Level-Chip-Scale-Package (WLCSP) |
Accuracy Limits for Relative Humidity and Temperature
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