Gas Sensor Module for ZMOD4410 TVOC and Indoor Air Quality Datasheet Description Features The ZMOD4410 Gas Sensor Module is designed for detecting total Measurement of total organic compounds (TVOC) volatile organic compounds (TVOC) and monitoring indoor air concentrations and indoor air quality (IAQ) quality (IAQ) in different use cases. It is a 12-pin LGA assembly Module algorithm estimates carbon dioxide level (eCO ) 2 (3.0 3.0 0.7 mm) that consists of a gas sense element and a Algorithm to set a control signal to trigger an external action CMOS signal conditioning IC. The modules sense element con- based on IAQ and odor change sists of heater element on a Si-based MEMS structure and a metal Heater driver and regulation loop for constant heater voltage oxide (MOx) chemiresistor. The signal conditioner controls the or constant heater resistance sensor temperature and measures the MOx conductivity, which is Internal auto-compensated temperature sensor not stress a function of the gas concentration. sensitive The measurement results can be read via an I2C interface with the I2C interface: up to 400kHz users microprocessor, which processes the data to determine the TVOC concentration, IAQ rating, and estimated carbon dioxide Configurable alarm/interrupt output with static and adaptive (eCO ) level. Alternatively, depending on the operation mode, the 2 levels ZMOD4410 software can generate a control signal, which can Adjustable ADC resolution for optimal speed versus trigger actions based on odor levels. With its low operating current resolution: 16-bit maximum consumption in Low-Power Operation Mode, the ZMOD4410 is an Built-in nonvolatile memory (NVM) for user data excellent choice for low-voltage and low-power battery appli- Very low average power consumption down to 1mW cations. Built-in nonvolatile memory (NVM) stores the configuration and provides space for arbitrary user data. Excellent for low-voltage and low-power battery applications No external trimming components required External reset pin (active-LOW) Typical Applications Customization for mobile and consumer applications Indoor air monitoring Siloxane resistant Monitor home, office, and personal environments for healthy Supply voltage: 1.7V to 3.6V conditions and comfort Package: 12-LGA Detect hazardous materials and unhealthy conditions (e.g., fumes from construction materials) Assembly size: 3.0 3.0 0.7 mm Automation based on indoor ambient air quality (HVAC, air purifiers, thermostats, etc.) ZMOD4410 Application Circuit Available Support V VSS SUPPLY VSS ZMOD4410 Evaluation Kit Power Manuals, application notes, blog, and white papers VDDIO Supply Instructional videos VDDH Programming libraries, example codes, and VDD algorithm support to optimize performance Third-party certification for compliance with ZMOD4410 well-accepted international IAQ standards SDA Gas Sensor Module SCL Algorithms Post-Processing INT RES N 2019 Integrated Device Technology, Inc. 1 July 30, 2019 ZMOD4410 Datasheet Contents 1. Pin Assignments ...........................................................................................................................................................................................4 2. Pin Descriptions ............................................................................................................................................................................................4 3. Absolute Maximum Ratings ..........................................................................................................................................................................5 4. Operating Conditions ....................................................................................................................................................................................5 5. Electrical Characteristics ..............................................................................................................................................................................6 6. Block Diagram ..............................................................................................................................................................................................7 7. Sensor Module Characteristics .....................................................................................................................................................................8 7.1 Gas Sensor Module .............................................................................................................................................................................8 7.2 Internal Temperature Sensor ...............................................................................................................................................................8 8. Gas Sensor Module Operation Modes and Characteristics ..........................................................................................................................9 8.1 Operation Mode 1: Standard IAQ and eCO2 and Operation Mode 2: Low Power IAQ and eCO2 ................................................9 8.1.1 Air Quality UBA Levels .........................................................................................................................................................9 8.1.2 Air Quality Estimated Carbon Dioxide Correlation (eCO ) ..................................................................................................11 2 8.2 Operation Mode 3: Odor ....................................................................................................................................................................11 8.3 Conditioning and Stability ..................................................................................................................................................................12 8.4 Environmental Temperature and Humidity ........................................................................................................................................14 8.5 Accuracy ............................................................................................................................................................................................14 9. Assembly Restrictions, Operation, Integration Notes and Storage .............................................................................................................15 10. Test and Calibration ...................................................................................................................................................................................16 11. I2C Interface and Data Transmission Protocol ...........................................................................................................................................16 12. Related Websites and Software .................................................................................................................................................................18 13. Glossary .....................................................................................................................................................................................................18 14. Package Outline Drawings .........................................................................................................................................................................19 15. Ordering Information ...................................................................................................................................................................................19 16. Revision History ..........................................................................................................................................................................................20 List of Figures Figure 1. ZMOD4410 Pin Assignments for 12-LGA Module Top View ............................................................................................................4 Figure 2. Block Diagram .....................................................................................................................................................................................7 Figure 3. Typical ZMOD4410 Response to Levels of TVOC Described by the UBA using an EPA Standard Mixture .....................................10 Figure 4. Typical Graph of CO Correlation ......................................................................................................................................................11 2 Figure 5. ZMOD4410 Typical Response Time and Signal Stability for TVOC Exposure ..................................................................................12 Figure 6. Sensor Module Response to Exposures at Different TVOC Concentrations for 2 Hours Each .........................................................13 Figure 7. Humidity Influence at Three Different VOC Concentrations ..............................................................................................................14 Figure 8. Typical Solder Profile .........................................................................................................................................................................15 Figure 9. I2C Data Transmission Protocol ........................................................................................................................................................17 Figure 10. Bus Timing .........................................................................................................................................................................................17 2019 Integrated Device Technology, Inc. 2 July 30, 2019