CCS gas sensor platforms incorporate a proprietary micro hotplate architected into a highly reliable thermally isolating structure. When combined with CCS, advanced MOX materials provide a family of ultra-small MOX gas sensors. To maximize the MOX gas sensitivity the material is heated to a stable elevated temperature. The internal heating element brings the MOX material to temperature (150°C to 450°C) within milliseconds. The sensitivity of the MOX material at these temperatures combined with advanced algorithms give an indication of the gas concentration present.
An overview of the CCS’s Ultra-low power MOX gas sensors is available to download here
The following table indicates the key product parameters for the CCS8xx product family of ultra-low power gas sensors
- Based on a sensor measurement duty cycle of 2.5%
- Based on a 20s warm-up period and a 10s measurement window performed once in a 2 min period for alcohol breath analysis
CCS801 is an ultra-low power MOX multi-gas sensor for monitoring indoor air quality including Carbon Monoxide (CO) and a wide range of Volatile Organic Compounds (VOCs). CCS801 is supported in a compact 2x3mm DFN package and can be used as an equivalent carbon dioxide (eCO2) sensor to represent eCO2 levels in real world environments, where the main cause of VOCs is from humans.
The features and benefits of CCS801 are summarised below.
| Features | Benefits |
|---|---|
| 2x3mm DFN Package | Small form-factor designs |
| Optimised low-power modes | Extended battery life in portable applications |
| Reduced Cross-Sensitivity | Enhanced selectivity to target gases |
| Fast heating time | Quick response to target gases |
The sensitivity of CCS801 to a target gas is optimised by adapting the supply voltage (VH) of the integrated micro-heater, and the gas concentration can be correlated to the change in resistance of the MOX sensing layer (RS).
| Icon | App | Description |
|---|---|---|
 | Indoor Air Quality | Allows users to evaluate CCS801 for detecting VOCs for indoor air quality monitoring |
 | Alcohol breathalyzer | Allows users to evaluate CCS801 for detecting Ethanol on human breath for Alcohol breathalyser applications. |
Target applications for CCS801 includes:
- Indoor air quality monitoring in Smarthome, Smartphone and Smart accessories
- Alcohol breath analysis in consumer devices
Additional information for CCS801 is available to download as follows:
| Description | Download |
|---|---|
| Datasheet for CCS801 | Click Here |
| Application note on CCS80x hardware design guidelines | Click Here |
| Application note on CCS80x assembly guidelines | Click Here |
| CCS MOX library considerations for software integration | Contact Us |
| Evaluation and demo kit options | Evaluation Kits |
The CCS803 is an ultra-low power MOX gas sensor for monitoring Ethanol and is supported in a compact 2 x 3mm DFN package as standard.
The features and bene ts of CCS803 are summarized below.
| Features | Benefits |
|---|---|
| 2x3mm DFN Package | Small form-factor designs |
| Optimised low-power modes | Extended battery life in portable applications |
| Reduced Cross-Sensitivity | Enhanced selectivity to target gases |
| Fast heating time | Quick response to target gases |
| Icon | App | Description |
|---|---|---|
| Alcohol breathalyzer | Allows users to evaluate CCS801 for detecting Ethanol on human breath for Alcohol breathalyser applications. |
The target use case for CCS803 is Alcohol breath analysis in accessories and consumer devices.
Additional information for CCS803 is available to download as follows:
| Description | Download |
|---|---|
| Datasheet for CCS803 | Click Here |
| Application note on CCS80x hardware design guidelines | Click Here |
| Application note on CCS80x assembly guidelines | Click Here |
| CCS MOX library considerations for software integration | Contact Us |
| Application note on using CCS803 for Alcohol breathalyser application | Click Here |
| Evaluation and demo kit options | Evaluation Kits |
The CCS811 is an ultra-low power digital gas sensor solution for monitoring indoor air quality (IAQ) in consumer and industrial applications.
Features and bene ts of CCS811 include:
| Features | Benefits |
|---|---|
| Integrated MCU | Managing the sensor drive modes and measurements while detecting VOCs |
| On-board processing | Provides indication of IAQ levels with no host intervention |
| Standard digital interface | Simple development for faster time to market |
| Optimised low-power modes | Extend battery life in portable applications |
| IAQ threshold alarms | No need for continuous monitoring in software, reduces host power/processing |
| Programmable baseline | Stable and predictable behaviour regardless of air quality at power up |
| 2.7 x 4.0mm LGA package | Small form-factor designs |
| Low component count | Saves up to 60% in PCB footprint |
| Proven technology platform | Designed for high volume and reliability (> 5 year lifetime) |
CCS811 functions include; a metal oxide (MOX) gas sensor, a microcontroller, a Analog-to-Digital converter (ADC) and a I2C digital interface, all inside a compact 2.7 x 4.0 mm, 0.6mm LGA package suitable for low cost PCB technology.
Detecting Ethanol and Hazardous Gases
CCS811 can be used for detecting Ethanol (Alcohol) and hazardous gases such as Carbon Monoxide (CO) and a wide range of Volatile Organic Compounds (VOCs), based on its Micro-hotplate technology. This unique technology signi cantly reduces power consumption through very fast cycle and measurement times.
Optimised Low-Power Modes
CCS811 supports multiple measurement modes which have been optimised for low-power consuming <1.2mW on average during active sensor measurement per minute and <6uW in idle mode.
Integrated MCU
CCS811 supports an integrated MCU that manages the sensor drive modes, ADC measurements and processes raw sensor data during gas detection using intelligent detection algorithms to represent equivalent CO2 (eCO2) level or TVOC measurement in real world environments, where the main cause of VOCs is from humans. This on-boarding processing reduces the overall system power consumption and processing required on the host system.
Digital Interface
CCS811 supports a standard I2C digital interface compatible with application processors, and provides a highly integrated solution. Compared to using separate gas sensor and microcontroller chips, which typically require two or more additional components, the CCS811 can save on the device’s bill of materials (BOM) and up to 60 percent on the board footprint.
Target application for CCS811 is Indoor air quality monitoring in Smarthome, Smartphone and accessory devices.
Additional information for CCS811 is available to download as follows:
| Description | Download |
|---|---|
| CCS811 Product Flyer | Click Here |
| Datasheet for CCS811 | Contact Us |
| Application note on Assembly guidelines for CCS811 | Click Here |
| Application note on Mechanical Considerations for CCS811 | Click Here |
| Application note on CCS Programming and Interface guide | Contact Us |
| Application note on Performing an Application code binary file download | Contact Us |
| Application note on Connecting an NTC Thermistor to the CCS811 | Contact Us |
| Application note on CCS811 Clean Air Baseline Save and Restore | Contact Us |
| Product brief for CCS_EVK04 evaluation kit | Click Here |
| Evaluation and demo kit options | Evaluation Kits |
IR Components
The micro-hotplate of the IR source is formed from a dielectric membrane, supported on a silicon substrate, with a central Tungsten heater, produced by a Deep Reactive Ion Etch (DRIE) MEMS process. The inherently low thermal mass allows for rapid heating to high temperature (up to 500 °C), allowing pulsed mode operation at high frequencies and low power consumption. A patented plasmonic emitter structure is used to enhance optical emission.
Sources are designed for use in the 2.5 – 15 μm mid IR waveband, for applications including CO2 and alcohol detection.
Cambridge CMOS Sensors has developed the CCS112 low power and the CCS114 high power wide band IR sources. Both sources can be powered with low DC drive voltages and in PWM mode, including at 3.3 V. The sources are available in die form or in TO packages, for easy integration with optical assemblies. They can be tted with a broadband optical window on request.
| Product | Temperature °C | Heater Area mm² | Power mW | Heater Resistance Ω | Heater Area mm² | Heater Voltage V | Frequency Hz |
|---|---|---|---|---|---|---|---|
| CCS112 | 500 | 0.28 | 141 +/- 15 | 30.6 +/- 7 | 0.28 | 2.07 | 38 |
| CCS114 | 500 | 3.07 | 477 +/- 48 | 8.1 +/- 7 | 3.07 | 1.95 | 18 |
- Typical values at an ambient temperature of 23 ± 3°C
- Frequency at 50% modulation
- DC power consumption
Additional information for the CCMOSS infrared sources are available to download as follows:
| Description | Download |
|---|---|
| Datasheet for CCS112 | Contact Us |
| Datasheet for CCS114 | Contact Us |
| Application note on NDIR Gas Detection | Contact Us |
| Application note CCS11x PWM Driving | Contact Us |
| Application note CCS11x Optical Flux Estimation | Contact Us |
| Application note CCS11x Spectral Emissivity | Contact Us |
Evaluation Kits
The following table indicates what evaluation kit and demonstrator options are available from CCS.
| Product | Description |
|---|---|
| CCS_EVK02 | CCS80x evaluation kit (Main board)¹ |
| CCS_EVK03 | Micro_USB demonstrator board for CCS80x¹ |
| CCS_EVK04 | CCS811 evaluation kit¹ |
- Includes Windows based software GUI
- Includes example Android app which requires USB host support
The CCS_EVK02 evaluation kit is designed to allow easy test and development with our CCS80x product family of MOX sensors. Key benefits include:
- Direct connection to PC via USB
- Simple software GUI for easy setup and data logging
- Determine effects of temperature and humidity on the gas sensor
- Evaluate pre-de ned and custom sensor drive modes
CCS_EVK02 contains a main developement board and a USB to mini-USB cable.
CCS80x sensor daughter boards for your evaluation can be ordered as follows:
| Product Description | Target Gases | Part Number |
|---|---|---|
| CCS801B Daughter Board | VOCs, CO and Ethanol | CCS_EVK02_801SB |
| CCS803A Daughter Board | Ethanol | CCS_EVK02_803SB |
Windows based software can be used to evaluate different application modes including three pre-defined Indoor Air Quality modes or custom drive settings. Software can also monitor and log the Temperature and Humidity in the test environment.
The CCS_EVK03 demonstrator kit contains a Micro-USB board which can be plugged into any USB on the go device for example a smartphone or tablet with Android version 4.3 or later.
There are two versions of CCS_EVK03 available as follows:
| Part Number | Description | Target Use Cases |
|---|---|---|
| CCS_EVK03_801 | Micro-USB demo kit for CCS801¹ | Indoor Air Quality Monitoring |
| CCS_EVK03_803 | Micro-USB demo kit for CCS803¹² | Alcohol Breath Analysis |
- Includes example android app for target use case
- Supplied with example plastics for demo purposes only
The following shows CCS_EVK03 fitted with CCS803 with and without plastics:
Two example android apps are available to download
| Icon | App | Description |
|---|---|---|
| Indoor Air Quality | Allows users to evaluate CCS801 for detecting VOCs for indoor air quality monitoring |
| Alcohol breathalyzer | Allows users to evaluate CCS803 for detecting Ethanol on human breath for Alcohol breathalyser applications. |
The CCS_EVK04 evaluation kit is designed to allow easy evaluation of the CCS811 an ultra-low power digital gas sensor solution for monitoring indoor air quality. Key benefits of CCS_EVK04 include:
- Direct connection to PC via USB
- Direct connection to host system via I²C
- Simple software GUI for easy setup and data logging
- Determine effects of temperature and humidity on the gas sensor
- Intelligent algorithms to output TVOC / eCO2 levels
CCS_EVK04 evaluation kit contains a USB to I²C bridge board, a CCS811 Sensor board and a USB to micro-USB cable.
Windows based software can be used to evaluate different application modes including three pre-defined Indoor Air Quality modes. Software can also monitor and log the Temperature and Humidity in the test environment
