Special Design for Home Gas Detectors - NDIR Gas Sensor Single Channel ASIC AFE Integrated Carbon Dioxide CO2 Gas Detector-SSG11DF42G1 – Sunshine

General Description

The SSG11DF42G1 family of integrated thermopile sensor for NDIR (Infrared gas detection) is a single channel thermopile sensor having an output signal voltage directly proportional to the incident infrared (IR) radiation power. An infrared narrow band pass filter in front of the sensor makes the device sensitive to target gas concentration. The SSG11DF42G1 comprising a new type CMOS compatible thermopile sensor chip features good sensitivity, small temperature coefficient of sensitivity as well as high reproducibility and reliability. An ASIC AFE (Analog Front End) chip is integrated with the thermopile sensor, providing 1000 gain for the small voltage output of thermopile sensor. A input offset voltage is also added in the sensor input. The sensor output voltage can be directly converted by ADC, which elimates the precision Zero-Drift amplifier and DC-DC circuit. A high-precision thermistor reference chip is also integrated for ambient temperature compensation.

SSG11DF42G1 NDIR Infrared CO2 gas sensor is a common type, small size sensor, using non-dispersive infrared (NDIR) principle to detect the existence of CO2 in the air, with good selectivity, non-oxygen dependent and long life. Built-in temperature sensor can do temperature compensation; and it has digital output and analog voltage output. This commons type infrared gas sensor is developed by the tight integration of mature infrared absorbing gas detection technology, Precision optical circuit design and superior circuit design.

It’s widely used for HVAC refrigeration, air monitoring indoor, industrial-process control and safety protection, agriculture and animal husbandry. Portable CO2 Temperature Humidity Monitor Air Quality Monitor Infrared NDIR Detector Indoor Outdoor; air quality monitor that detects Carbon dioxide (CO2),Temperature and many other industry applications.

Features and Benefits

Integrated ASIC AFE with analog outputs, sensor gain preset to 1000

Small size, high reliability, 4-pin metal housing TO-46

Integrated thermistor temperature reference with high-precision

100 μA Low Power and 2.5 V to 5.5 V Wide Supply Voltage Range

Operating Temperature Range: −40℃ to +125℃

1.212V offset voltage for thermopile sensor

Applications

NDIR gas sensing

In door air quality

Greenhouse

Electrical Characteristics

Pin Configurations & Package Outlines