Datasheet SGP30 (Sensirion) - 3

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Accuracy ethanol signal Accuracy H2 signal Figure 2
Typical and maximum accuracy tolerance in % of
Figure 3
Typical and maximum accuracy tolerance in % of measured value at 25°C, 50% RH and typical VDD. The sensors measured value at 25°C, 50% RH and typical VDD. The sensors have been operated for at least 24h before the characterization. have been operated for at least 60h before the characterization.
Long-term drift Ethanol signal Long-term drift H2 signal Figure 4
Typical and maximum long-term drift in % of measured
Figure 5
Typical and maximum long-term drift in % of measured value at 25°C, 50% RH and typical VDD. The sensors have been value at 25°C, 50% RH and typical VDD. The sensors have been operated for at least 24h before the first characterization. operated for at least 60h before the first characterization.
1.2 Air Quality Signals
Air quality signals TVOC and CO2eq are calculated from Ethanol and H2 measurements using internal conversion and baseline compensation algorithms (see
Figure 6
).
Baseline compensation & Signal conversion Signal Processing Figure 6
Simplified version of the functional block diagram (compare
Figure 1
) showing the signal paths of the SGP30. www.sensirion.com Version 1.0 – May 2020 – D1 3/19 Document Outline 1 Sensor Performance 1.1 Gas Sensing Performance 1.2 Air Quality Signals 1.3 Recommended Operating and Storage Conditions 2 Electrical Specifications 3 Interface Specifications The SGP30 comes in a 6-pin DFN package, see Table 4. 4 Absolute Minimum and Maximum Ratings 5 Timing Specifications 5.1 Sensor System Timings 5.2 Communication Timings 6 Operation and Communication 6.1 Power-Up and Communication Start 6.2 Measurement Communication Sequence 6.3 Measurement Commands 6.4 Soft Reset 6.5 Get Serial ID 6.6 Checksum Calculation 6.7 Communication Data Sequences 7 Quality 7.1 Environmental Stability 7.2 Material Contents 8 Device Package 8.1 Moisture Sensitivity Level 8.2 Traceability 8.3 Package Outline 8.4 Landing Pattern 8.5 Soldering Instructions 9 Tape & Reel Package 10 Ordering Information Revision History Important Notices Warning, Personal Injury ESD Precautions Warranty Headquarters and Subsidiaries