XinaBox VOC & eCO2 Module for CCS811

This xChip is a gas sensor module, based on the CCS811 by AMS. The CCS811 is an ultra-low power digital gas sensor solution which integrates a metal oxide (MOX) gas sensor that is equipped to sense a wide variety of Volatile Organic Compounds (VOCs) for indoor air quality monitoring with a microcontroller unit (MCU), which includes an Analog-to-Digital converter (ADC), and an I2C interface.

The CCS811 is based on AMS’s unique micro-hotplate technology which enables a highly reliable solution for gas sensors, very fast cycle times and a significant reduction in average power consumption.

The integrated MCU manages the sensor drive modes and raw sensor data measured while detecting VOCs. The I2C digital interface significantly simplifies the hardware and software design, enabling a faster time to market.

The CCS811 supports intelligent algorithms to process raw sensor measurements to output a TVOC value or equivalent CO2 (eCO2) levels, where the main cause of VOCs is from humans.

The CCS811 supports multiple measurement modes that have been optimised for low-power consumption during an active sensor measurement and idle mode extending battery life in portable applications.

● Integrated MCU
● On-board processing
● Standard I2C digital interface
● Optimised low-power modes
● Low component count
● Proven technology platform

● Smart phones
● Wearables
● Home and building automation

● Based on the CCS811 from AMS
● eCO2 The equivalent C02 (eCO2) output range for CCS811 is from 400 ppm to 8192 ppm.
● TVOC The Total Volatile Organic Compound (TVOC) output range for CCS811 is from 0 ppb to 1187 ppb.
● Temperature and humidity compensation
● Interrupt and Interrupt on Threshold
● Automatic baseline correction
● Manual baseline correction

● Mode 0: Idle, low current mode
● Mode 1: Constant power mode, IAQ measurement every second
● Mode 2: Pulse heating mode, IAQ measurement every 10 seconds
● Mode 3: Low power pulse heating mode, IAQ measurement every 60 seconds.
● Mode 4: Constant power mode, sensor measurement every 250 ms.