MAX31730ATC+T

MAX31730ATC+T is a 3-channel remote temperature sensor. It monitors its own temperature and the temperatures of three external diode-connected transistors. The operating supply voltage is from 3.0V to 3.6V. Resistance cancellation compensates for high series resistance in circuit-board traces and the external thermal diode, while beta compensation corrects for temperature-measurement errors due to low-beta sensing transistors. All temperature channels have programmable temperature thresholds. When the measured temperature of a channel crosses the respective threshold, a status bit is set in the thermal status registers and the open-drain active-low THERM output asserts. The highest temperature register allows the host to obtain the temperature of the hottest channel. The 2-wire serial interface accepts SMBus protocols (write byte, read byte, send byte, and receive byte) for reading the temperature data and programming the temperature thresholds.

• Highest temperature register simplifies and speeds overtemperature notification
• Accurate temperature measurement helps designers meet error budgets
• Resistance cancellation for remote channels
• Compensation for low beta transistors, programmable temperature thresholds
• Integration reduces cost, board area, power-supply current, and server address usage
• One local and three remote temperature-sensing channels
• Eight selectable server addresses
• Flexible SMBus/I2C bus interfaces to a variety of microcontrollers
• 12 TDFN-EP package
• Temperature range from -40°C to +125°C