SGP41
Indoor Air Quality Sensor for VOC Measurements
- MOx based gas sensor for indoor air quality applications
- Outstanding long-term stability and lifetime
- I2C interface with digital output signal
- Very small 6-pin DFN package: 2.44 x 2.44 x 0.85 mm3
- Low power consumption: 2.6 mA at 3.3 V
- Tape and reel packaged, reflow solderable
Product Description
The SGP41 is a digital gas sensor designed for easy integration into air purifiers or ventilation systems for demand controlled. Sensirion’s CMOSens ® technology offers a complete and easy to use sensor system on a single chip. Which is featuring a digital I2C interface and temperature controlled micro hotplates, providing VOC and NO x based indoor air quality signal. Both sensing element and Gas Index algorithm feature an unmatched robustness against contaminating gases present in real world applications enabling a unique long-term stability as well as low drift. This is very small (2.44 x 2.44 x 0.85mm 3 DFN) package enables applications in limited spaces. Sensirion’s state of the art production process guarantees high reproducibility and reliability. Tape and reel packaging together with suitability for standard SMD assembly processes make the SGP41 predestined for high volume applications.
Gas Sensor Specifications
| Parameter | Conditions | Value |
|---|---|---|
| Output signals | Digital processed value (VOC Index) | Min: 0 VOC Index points, Max: 550 VOC Index points |
| Digital raw value (SRAW) | Min: 0 ticks, Max: 65’535 ticks | |
| Measurement range | Ethanol in clean air | Min: 0ppm, Max: 1’000ppm |
| Specified range | Ethanol in clear air | Min: 0.3ppm, Max: 30ppm |
| Device-to-device variation | VOC Index |
< ±15 VOC Index points or < ±15% VOC Index m.v. (the larger) |
| Repeatability | VOC Index |
< ±5 VOC Index points or < ±5% VOC Index m.v. (the larger) |
| Limit of detection | Ethanol in specified range |
< 50ppb or < 10% of concentration setpoint(the larger) |
| Response time |
Changing concentration from 5 to 10 ppm of ethanol, at sampling
interval of 1 s τ63 τ90 |
< 10s, Typ. < 30s, Typ. |
| Switch-on behavior | Time until reliably detecting VOC events | < 60s, Typ. |
| Time until specifications in this table are met | < 1h, Typ. | |
| Sensitivity |
SRAW, doubling VOC concentration Ethanol in specified range 5 to 10 ppm of ethanol |
−870ticks, Typ. Min:-710ticks, Typ:-870ticks, Max:−1’030ticks |
| Recommended sampling interval | VOC Index | 1s, Typ. |
| SRAW | Min:10s, Typ:1s, Max:0.5s |
