link to page 12 link to page 12 MAX31856 Precision Thermocouple to Digital Converter with Linearization Pin Configuration TOP VIEW + AGND 1 14 DGND BIAS 2 13 FAULT T- 3 12 SDI MAX31856 T+ 4 11 SDO AVDD 5 10 SCK DNC 6 9 CS DRDY 7 8 DVDD TSSOPPin DescriptionPINNAMEFUNCTION 1 AGND Analog Ground 2 BIAS Bias Voltage Source. Nominally 0.735V. This pin is floating when no conversions are taking place. 3 T- Thermocouple Negative Input. See Table 1. 4 T+ Thermocouple Positive Input. See Table 1. 5 AVDD Analog Positive Supply. Bypass with a 0.1µF capacitor to AGND. 6 DNC Do Not Connect 7 DRDY Data Ready Output 8 DVDD Digital Positive Supply. Bypass with a 0.1µF capacitor to DGND. 9 CS Chip Select. Set CS low to enable the serial interface. 10 SCK Serial Clock Input 11 SDO Serial Data Output 12 SDI Serial Data Input 13 FAULT Cable, thermocouple, or temperature fault output 14 DGND Digital Ground www.maximintegrated.com Maxim Integrated │
