MAX31850JATB+

Sensor And Detector Interfaces Overview

The MAX31850JATB+ is a cold-junction compensated, 1-Wire thermocouple-to-digital converter designed for J-type thermocouples. It integrates a 14-bit ADC and performs internal compensation to digitize signals from -270°C to +1200°C with 0.25°C resolution. The device operates on a single data line (DQ) and supports parasite power mode. Key electrical parameters include a supply voltage range of 3.0V to 3.7V, an active supply current of up to 1750µA, and an operating temperature range of -40°C to +125°C. It features fault detection for open circuits and shorts.

Sensor And Detector Interfaces Feature Summary

• Integrated cold-junction compensation and 14-bit analog-to-digital conversion
• Single-wire 1-Wire interface supporting parasite power mode
• Built-in fault detection for open thermocouples and shorts to VDD or GND
• Unique 64-bit ROM code enabling multi-drop bus configurations

Sensor And Detector Interfaces Applications

• Industrial process control systems
• HVAC temperature monitoring
• Medical equipment requiring precise thermal sensing
• Appliance safety and temperature regulation

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'J' confirms J-type thermocouple compatibility. Confirm the 'T' indicates tape-and-reel packaging. Ensure the '+'' denotes lead-free/RoHS compliance. Check for any additional manufacturer-specific codes that may affect pinout or electrical characteristics.

Sensor And Detector Interfaces Selection Notes

Select this component when a J-type thermocouple interface is required with minimal wiring complexity. The 1-Wire protocol simplifies PCB layout by reducing pin count. Consider parasite power capabilities if external supply routing is restricted. Verify that the 0.25°C resolution meets system accuracy requirements.

Sensor And Detector Interfaces Part Context

This part belongs to the MAX31850/MAX31851 family of thermocouple converters. The MAX31850 variant supports K, J, N, T, and E types, while the MAX31851 supports S and R types. The JATB+ designation specifies the J-type calibration and TDFN-EP package.

Sensor And Detector Interfaces Replacement Considerations

Direct replacements within the same family include other MAX31850 variants with different thermocouple type suffixes (e.g., MAX31850KATB+, MAX31850NATB+). Cross-family replacements require verifying 1-Wire compatibility and voltage levels.