MAX31850EATB+T

Sensor And Detector Interfaces Overview

The MAX31850EATB+T is a cold-junction compensated, 1-Wire thermocouple-to-digital converter optimized for E-type thermocouples. It digitizes signals with 14-bit resolution (0.25°C) and supports readings from -270°C to +1000°C. The device features integrated cold-junction compensation with an internal temperature error of ±2°C over the -40°C to +100°C range. Communication occurs via a single-wire 1-Wire bus, allowing parasite power operation directly from the data line. Key specifications include a supply voltage range of 3.0V to 3.7V, active current of up to 1.75mA, and a conversion time of approximately 100ms.

Sensor And Detector Interfaces Feature Summary

• Integrated cold-junction compensation eliminates external reference components
• Single-wire 1-Wire interface enables multidrop system configurations
• Parasite power capability allows operation without a local external supply
• Built-in fault detection identifies open circuits and shorts to VDD or GND

Sensor And Detector Interfaces Applications

• Industrial process control systems
• HVAC temperature monitoring
• Medical equipment thermal management
• Appliance safety thermostats

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'EA' corresponds to the E-type thermocouple variant during sourcing. Confirm the 'TB+' designation indicates the TDFN-EP package and lead-free status. Ensure the supplier provides documentation confirming RoHS3 compliance and REACH status as specified in the manufacturer's ordering information.

Sensor And Detector Interfaces Selection Notes

Select this component when a single-wire interface is required to minimize wiring complexity in distributed sensor networks. The E-type variant is appropriate for applications requiring high sensitivity within the -270°C to +1000°C range. Consider parasite power requirements carefully, as strong pullup circuitry is necessary during conversion cycles to maintain signal integrity.

Sensor And Detector Interfaces Part Context

This part belongs to the MAX31850/MAX31851 family of thermocouple converters. The MAX31850 series supports K, J, N, T, and E types, while the MAX31851 supports S and R types. The MAX31850EATB+T specifically targets E-type sensors, offering distinct sensitivity characteristics compared to other variants in the same package.

Sensor And Detector Interfaces Replacement Considerations

Publicly confirmed substitutes include other suffixes within the MAX31850 family (e.g., MAX31850KATB+T for K-type) if the thermocouple type can be changed. Direct pin-compatible replacements for other thermocouple types are available within the same product line.