CO2 Sensor
-
Price
Price on request ≥1piece
-
Model Number
STC31 -
Data Sheet
-
Package
Original packaging -
Specs
STC31 -
Quantity
- +Send Inquiry
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Product Description
Product Summary：
The STC3x sensor family is Sensirion’s series of Gas Concentration sensors designed for high-volume applications. The STC3x utilizes a revolutionized thermal conductivity measurement principle, which results in superior repeatability and long-term stability.
This make the STC31 a perfect choice for applications where reliability is key.
The sensor features a digital I2C interface, which makes it easy to connect directly to a microprocessor.
The outstanding performance of these sensors is based on Sensirion’s patented CMOSens® sensor technology, which combines the sensor element, signal processing and digital calibration on a small CMOS chip. The well-proven CMOS technology is perfectly suited for high-quality mass production and is the ideal choice for demanding and cost-sensitive OEM applications.
Benefits of Sensirion’s CMOSens® Technology：
• High reliability and long-term stability
• Best signal-to-noise ratio
• Industry-proven technology with a track record of more than 15 years
• Designed for mass production
• High process capability
Specifications：
1.Electrical Specifications
|
Parameter |
Symbol |
Condition |
Min. |
Typ. |
Max. |
Units |
Comments |
|
Supply Voltage |
VDD |
|
2.7 |
3.3 |
5.5 |
V |
Sensor is calibrated at 3.3V |
|
Power-up/down level |
VPOR |
|
2.3 |
2.5 |
2.7 |
V |
|
|
Supply current |
IDD |
Measuring |
|
3 |
5 |
mA |
|
|
Idle state |
|
50 |
|
uA |
|
||
|
Sleep mode |
|
|
1 |
uA |
|
2.Timings
|
Parameter |
Symbol |
Condition |
Min. |
Typ. |
Max. |
Units |
Comments |
|
Power-up time |
tPU |
|
|
|
14 |
ms |
Time to sensor ready |
|
Soft reset time |
tSR |
|
|
|
12 |
ms |
Time between soft reset command or exit sleep mode and sensor ready |
|
I2C SCL frequency |
fI2C |
|
|
400 |
1000 |
kHz |
|
|
Measurement time concentration |
|
|
|
|
66 |
ms |
Measurement result is returned together with temperature value |
3.Mechanical Specifications
|
Parameter |
Symbol |
Condition |
Min. |
Typ. |
Max. |
Units |
Comments |
|
Weight |
W |
|
|
|
0.025 |
g |
|
4.Materials
|
Parameter |
|
|
REACH, RoHS |
REACH and RoHS compliant |
5.Absolute Minimum and Maximum Ratings（1）
|
Parameter |
Rating |
Units |
|
Supply Voltage VDD |
-0.3 to 5.5 |
V |
|
Max Voltage on pins (SDA, SCL) |
-0.3 to VDD+0.3 |
V |
|
Input current on any pin |
±70 |
mA |
|
Operating temperature range |
-20 to +85 |
℃ |
|
Storage temperature range |
-20 to +85 |
℃ |
|
Operating absolute pressure range |
600 to 1200 |
mbar |
|
Max. humidity for long term exposure |
40℃ dew point |
|
|
ESD HBM (human body model) |
2 |
kV |
|
Media Compatibility |
Non corrosive gases |
|