Datasheet SGP40 (Sensirion) - 2

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Table of Contents 1 Sensor Performance .. 3 2 Specifications .. 5
2.1 Electrical Specifications ... 5 2.2 Timing Specifications ... 5 2.3 Recommended Operating and Storage Conditions ... 5 2.4 Absolute Minimum and Maximum Ratings ... 6 2.5 Hardware Interface Specifications ... 7 2.6 Environmental Stability .. 8 2.7 Material Contents ... 8
3 Sensor Output Signal Description ... 9
3.1 Raw Signal Measurement .. 9 3.2 VOC Index Measurement .. 9 3.3 Built-in Self-Test ... 10 3.4 Reading out The Sensor Serial Number .. 10 3.5 Sensor Start-up Behavior ... 10
4 Digital Interface Description ... 11
4.1 General Considerations ... 11 4.2 I2C Address .. 11 4.3 I2C Voltage Levels .. 11 4.4 I2C Protocol Speed ... 11 4.5 I2C Sequences ... 11 4.6 Checksum Calculation ... 12 4.7 I2C Commands ... 12
5 Mechanical Specifications .. 15
5.1 Traceability ... 15 5.2 Package Outline ... 15 5.3 Land Pattern .. 16 5.4 Soldering Instructions .. 16
6 Ordering Information ... 17
6.1 Packaging Information ... 17 www.sensirion.com Version 1.1 – September 2021 2/19