Datasheet SGP30 (Sensirion) - 6

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Figure 9
Typical application circuit (for better clarity in the image, the positioning of the pins does not reflect the positions on the real sensor). The electrical specifications of the SGP30 are shown in
Table 3
. The power supply pins must be decoupled with a 100 nF capacitor that shall be placed as close as possible to pin VDD – see
Figure 9
. The required decoupling depends on the power supply network connected to the sensor. We also recommend VDD and VDDH pins to be shorted7. SCL is used to synchronize the communication between the microcontroller and the sensor. The SDA pin is used to transfer data to and from the sensor. For safe communication, the timing specifications defined in the I2C manual8 must be met. Both SCL and SDA lines are open-drain I/Os with diodes to VDD and VSS. They should be connected to external pull-up resistors. To avoid signal contention, the microcontroller must only drive SDA and SCL low. The external pull-up resistors (e.g. Rp = 10 kΩ) are required to pull the signal high. For dimensioning resistor sizes please take bus capacity and communication frequency into account (see for example Section 7.1 of NXPs I2C Manual for more details8). It should be noted that pull-up resistors may be included in I/O circuits of microcontrollers. The die pad or center pad is electrically connected to GND. Hence, electrical considerations do not impose constraints on the wiring of the die pad. However, for mechanical stability it is recommended to solder the center pad to the PCB.
4 Absolute Minimum and Maximum Ratings
Stress levels beyond those listed in
Table 5
may cause permanent damage to the device. These are stress ratings for the electrical components only and functional operation of the device at these conditions cannot be guaranteed. Exposure to the absolute maximum rating conditions for extended periods may affect the reliability of the device.
Parameter Rating
Supply voltage VDD -0.3 V to +2.16 V Supply voltage VDDH -0.3 V to +2.16 V Storage temperature range -40 to +125°C Operating temperature range -40 to +85°C Humidity Range 10% - 95% (non-condensing) ESD HBM 2 kV ESD CDM 500 V Latch up, JESD78 Class II, 125°C 100 mA
Table 5
Absolute minimum and maximum ratings. Please refer to Handling Instructions for Sensirion Gas Sensors on Sensirion webpage for full documentation. 7 If VDD and VDDH are not shorted, it is required that VDD is always powered when VDDH is powered. Otherwise, the sensor might be damaged. 8 http://www.nxp.com/documents/user_manual/UM10204.pdf www.sensirion.com Version 1.0 – May 2020 – D1 6/19 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