<p>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.</p>
Name | Description | Series | Category |
---|---|---|---|
SHT40 | ±1.8% / max. ±3.5% RH Digital humidity and temperature sensor | SHT4x | Humidity |
Humidity | |||
---|---|---|---|
Typ. relative humidity accuracy
3
| 3 | %RH | |
Operating relative humidity range
0 - 100
| 0 - 100 | %RH | |
Response time (τ63%)
8
| 8 | s | |
Calibration certificate
Factory calibration
| Factory calibration |
Temperature | |||
---|---|---|---|
Typ. temperature accuracy
0.3
| 0.3 | °C | |
Response time (τ63%)
5
| 5 | s |
Generic | |||
---|---|---|---|
Supply voltage
1.62 - 1.98
| 1.62 - 1.98 | V | |
Average supply current
4.8
| 4.8 | uA | |
Max. supply current
465
| 465 | uA | |
Operating temperature range [°C]
-40 - 125
| -40 - 125 | °C | |
Interfaces
I²C
| I²C | ||
Size (LxWxH)
1.3 x 0.7 x 0.5
| 1.3 x 0.7 x 0.5 | mm³ | |
Packaging size
500(Sampling), 1000, 10000
| 500(Sampling), 1000, 10000 | pcs (T&R) |
Sensirion's sensor solutions are used in a wide range of applications and markets. Our reliable environmental and flow sensors improve energy efficiency, increase health and ensure safety and comfort.