sparkfun SGP30 Hook-Up Manual page 5

As we mentioned in the Introduction, the SGP30 gas sensor outputs measurements of total VOCs (TVOC) in parts
per billion (ppb), carbon dioxide (CO ) equivalent in parts per million (ppm) as well as raw gas readings of ethanol
and hydrogen (H ). The ethanol and H readings are primarily intended for the SGP30's on-chip calibration and
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baseline compensation algorithms but they can be useful for rough measurements of both compounds. Refer to
page 8 of the datasheet for more information on these raw signals.
The table below outlines the basic parameters of each sensing output. For a detailed description of these and all
other aspects of the sensor, review the datasheet.
TVOC Output Signal Range
CO eq Output Signal Range
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Ethanol Signal Measurement Range
H Signal Measurement Range
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Power
The SGP30 accepts a supply voltage between 1.62-1.98V so to work with the 3.3V standard for the Qwiic
ecosystem, we added a voltage regulator to, well, regulate that 3.3V down to 1.8V. Power can be provided via the
Qwiic connectors or through the labeled 3.3V and GND pins broken out to 0.1" header pins on this board.
⚡Note: While the voltage regulator on this breakout can accept up to a 6V supply voltage, we strongly
recommend only using 3.3V as all Qwiic devices are designed to work at that voltage.
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Qwiic and I C Interface
The SGP30 communicates via I C so of course we broke out these pins to two Qwiic connectors as well as 0.1"-
spaced header pins if you would prefer to use standard PTH connections. Since the sensor operates at 1.8V we
have added transistors to both the SDA and SCL lines to level shift them from 3.3V so you can use it without issue
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Sensing Parameter
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Value
0 to 60,000 ppb
400 to 60,000 ppm
0 to 1,000 ppm
0 to 1,000 ppm