ZMOD4450AI1V

ZMOD4450AI1V is a gas sensor module. It is designed for detecting gases associated with food ripening or rotting and is targeted for use in refrigeration air quality (RAQ) applications (e.g., food storage and shipping, including humid and dusty applications with the possibility of water spray, condensation, or immersion). It is an assembly (3.0 × 3.0 × 0.7 mm) that consists of a gas sense element and a CMOS signal conditioning IC. Its sense element consists of a heater element on a Si-based MEMS structure and a metal oxide (MOx) chemiresistor. The signal conditioner controls the sensor temperatures and 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. Typical application includes refrigerator systems control, measurement of meat, fruit, and vegetable quality, monitors for shipping and storage conditions, and odor remediation systems.

• Measurement of gases associated with food ripening and storage
• Configurable methods of operation based on application and use case
• Heater driver and regulation loop for constant resistance
• Built-in nonvolatile memory (NVM) for module-specific data
• Low average power consumption in the mW range
• Firmware upgradable platform for application optimizations
• No external trimming components required, external reset pin (active-LOW)
• Customization for mobile, industrial, and consumer applications, siloxane resistant
• Supply voltage range from 1.7V to 3.6V
• 12-LGA package, target operation temperature range from 0°C to 25°C