What this J-type thermocouple digitizer does in a temperature-sensing chain
The MAX31855JASA+T is a thermocouple-to-digital converter that accepts a J-type thermocouple input and outputs a digital temperature reading directly — no external linearization or cold-junction compensation circuit needed. It draws 900 µA from the supply, making it suitable for systems where the temperature-sensing node shares a small power budget with other sensors or a microcontroller.
Package, footprint, and board integration
The surface-mount package supports reflow soldering; the device is ROHS3 compliant, and the tape-and-reel option suits volume pick-and-place assembly.