Principle Introduction:
MEMS VOC gas sensor is using MEMS micro-fabrication hot plate on a Si substrate base, gas-sensitive materials used in the clean air with low conductivity metal oxide semiconductor material. When the sensor exposed to gas atmosphere, the conductivity is changing as the detected gas concentration in the air. The higher the concentration of the gas, the higher the conductivity. The sensor has high sensitivity and small size, and adopts I2C digital signal output mode to facilitate the observation of multiple sensor networks. It can be widely used in many fields such as environmental safety and portable instruments.

Applications :
*Environmental monitoring
*Portable device
*Health care
*Site control

Technical parameters :

Tips:For more parameter information, please refer to the latest manual provided by salesman.

Parameters

Working voltage	2.5±0.1V	Working current	≤25mA
Max heating power	80mW	Detection range	5ppm（alcohol）
Output mode	I2C slave mode	Default address	0x55
I2C rate	10-100kbps	Pull-up resister	Need external pull-up resistor
Pre-heat time	≤3min	Response time	≤ 60s

Chip limit value

Parameter	Min	Typ	Max	Unit
Storage temperature	-25	-	60	℃
Working temperature	-10	-	50	℃
Limit voltage (VCC & GND)	-0.3	-	VCC+0.3	V
Limit voltage (Other pins)	-0.3	-	VCC+0.3	V
Limit current	-	-	100	mA

Reference Circuit :

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