MAX31850KATB+

The MAX31850KATB+ is a cold-junction compensated, 1-wire thermocouple to digital converter in 10 pin TDFN package. This sophisticated thermocouple to digital converter includes a built-in 14bit analogue to digital converter (ADC), cold-junction compensation sensing and correction, a digital controller, a 1-wire data interface and associated control logic. The 1-wire bus by definition requires only one data line and ground connection for communication with a central microcontroller. The data line requires a weak pull-up resistor since device is linked to the bus through a three-state or open-drain port. Four location address inputs simplify mapping of device to specific locations. This device has a unique 64bit serial code which allows multiple units to function on the same 1-wire bus. Hence it is simple to use one microcontroller (the master device) to monitor temperature from many thermocouples distributed over a large area.

• Supply voltage range is 3V to 3.7V
• Integration reduces design time and lowers system cost
• 14bit, 0.25°C resolution
• Measured temperature range from -270°C to +1372°C
• Accuracy range of ±6°C
• Detects thermocouple shorts to GND or VDD
• Detects open thermocouple
• 1-wire multiddrop capability simplifies multisensor systems

Applications

Sensing & Instrumentation, Industrial, Medical

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party