ZMOD4450 Datasheet | IDT

Gas Sensor Module for Refrigeration Air Quality Description The ZMOD4450 Gas Sensor Module is designed for detecting gases associated with food ripening or rotting and is targeted for use in refrigeration air quality (RAQ) applications; for example, food storage and shipping. The sensor is a 12-pin LGA assembly (3.0  3.0  0.7 mm) that consists of a gas sense element and a CMOS signal conditioning IC. The module’s sense element consists of a heater element on a silicon-based MEMS structure and a metal temperature sensor. It measures the MOx conductivity, which is a function of the gas concentration. The measurement results can be read via an I2C interface with the user’s microprocessor, which processes the data to determine the levels of gases present and to indicate the likelihood of food spoilage. With the ZMOD4450’s low operating current consumption, the sensor is an excellent choice for low-voltage and low-power battery applications. Built-in nonvolatile memory (NVM) stores the configuration and provides space for arbitrary user data. Typical Applications - Refrigerator systems control - Measurement of fruit and vegetable quality - Monitors for fruit and vegetable shipping and storage conditions for fruit and vegetable quality Physical Characteristics - Target operation temperature: 0°C to 25°C - Supply voltage: 1.7V to 3.6V - Package: 12-LGA - Assembly size: 3.0  3.0  0.7 mm Available Support - ZMOD4450 Evaluation Kit - Manuals, application notes, and white papers - Instructional videos - Programming libraries, example codes, and algorithm support to optimize performance Features - Measurement of gases associated with food ripening and storage: ethylene, amines, volatile sulfur pounds - Configurable methods of operation based on application and use case - Heater driver and regulation loop for constant heater voltage or constant heater resistance - Internal auto-pensated temperature sensor; not stress sensitive - I2C interface:...