MAX31851RATB+

MAXIM INTEGRATED PRODUCTS  MAX31851RATB+  温度传感器芯片, 数字式, ± 7°C, -270 °C, 1768 °C, TDFN, 10 引脚

The 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.

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Supply voltage range is 3V to 3.7V

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"R" type thermocouple

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Integration reduces design time and lowers system cost

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14bit, 0.25°C resolution

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Measured temperature range from -270°C to +1768°C

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Accuracy range of ±7°C

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Detects thermocouple shorts to GND or VDD

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Detects open thermocouple

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1-wire multiddrop capability simplifies multisensor systems