Summary of SGP40-D-R4 INDOOR AIR QUALITY SENSOR
The SGP40 is a digital VOC sensor by Sensirion, utilizing CMOSens® technology for air purifiers and ventilation systems. It integrates a micro-hotplate and humidity compensation on a single chip with an I²C interface. Powered by a dedicated algorithm, it provides accurate indoor air quality signals to control fans or monitor environments. Its multi-pixel design ensures low power consumption suitable for battery operation, while advanced manufacturing guarantees high reliability and reproducibility over time.
Parts used in the SGP40 Sensor Project:
- Sensor chip
- I²C interface
- Temperature-controlled micro-hotplate
- VOC algorithm
- Mult-pixel sensing elements
- Digital 16-bit raw signal output
- Processed digital VOC index signal
Sensirion’s SGP40 VOC sensor is designed for air purifiers or demand-controlled ventilation
The SGP40 is Sensirion’s digital volatile organic compounds (VOC) sensor designed for easy integration into air treatment devices and air quality monitors. Based on Sensirion’s CMOSens® technology, the SGP40 offers a complete sensor system on a single chip and features a digital I²C interface, a temperature-controlled micro-hotplate, and a humidity-compensated indoor air quality signal. In combination with Sensirion’s powerful VOC algorithm, the sensor signal can be directly used to evaluate indoor air quality for applications such as triggering the gradual fan control of an air treatment device. Both the SGP40 chip and VOC algorithm feature unrivaled robustness in the final application over their lifetimes. Pushing the multi-pixel and multi-hotplate approach to the next level of individual control of each sensing element, the SGP40 enables a drastic reduction in power consumption, making it suitable for battery-driven applications as well. Sensirion’s state-of-the-art production process guarantees high reproducibility and reliability.
Features
- Interface: I²C
- Supply voltage range: 1.7 V to 3.6 V
- Current consumption: 2.6 mA to 3.5 mA (at 3.3 V or 1.8 V, respectively)
- Measurement range: 0 ppm to 1,000 ppm of ethanol equivalents
- Sensor output: digital 16-bit raw signal
- Processed output: digital VOC index signal
- Response time: <10 s (tau 63%)
- Limit of detection: <0.05 ppm of ethanol equivalents or <10% of concentration setpoint (whichever is larger)
- Switch-on time: <60 s
- On-chip humidity compensation: yes
Read more: SGP40-D-R4 INDOOR AIR QUALITY SENSOR
- What is the primary application of the SGP40 sensor?
The SGP40 is designed for air purifiers or demand-controlled ventilation. - How does the SGP40 reduce power consumption?
It pushes the multi-pixel and multi-hotplate approach to enable individual control of each sensing element. - Can the SGP40 be used in battery-driven applications?
Yes, its drastic reduction in power consumption makes it suitable for battery-driven applications. - What type of interface does the SGP40 feature?
The sensor features a digital I²C interface. - Does the SGP40 include humidity compensation?
Yes, the sensor includes on-chip humidity compensation. - What is the response time of the SGP40?
The response time is less than 10 seconds for tau 63%. - How is the sensor signal utilized in air treatment devices?
The signal can directly evaluate indoor air quality to trigger gradual fan control. - What technology is the SGP40 based on?
The sensor is based on Sensirion's CMOSens® technology.
