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This application report describes how to implement a direct thermocouple interface without using the signal conditioning circuitry normally required for thermocouples. The thermocouple interfaces directly to the ADS1240 24-bit analog-to-digital converter (ADC). An MSP430F413 ultra-low-power microcontroller (MCU) is used to communicate with the ADC, read the conversion values, convert them to temperature, and display them on an LCD. Although an MSP430F413 is used for this application report, any MSP430 MCU could be used to implement this application.