MAX31732ATG+

MAX31732ATG+ is a multi-channel temperature sensor that monitors its own temperature and the temperatures of up to four external diode-connected transistors. A resistance cancellation feature compensates for up to 300 ohm of series resistance between the external thermal diode and the MAX31732, while beta compensation corrects for temperature-measurement errors due to low-beta sensing transistors. The sensor also allows ideality factors between 0.9844 and 1.311. A 512-bit non-volatile memory (NVM) allows the MAX31732 to program the configuration registers during power-up without software/firmware intervention. The NVM also captures the fault temperature for each remote and local channel for further analysis at a later time. Applications include temperature measurement of on-chip CPU, ASIC, SOC, or FPGA diodes or remote discrete diodes, industrial-thermal management.

• One local and four remote temperature-sensing channels
• Up to 300 ohm resistance cancellation for remote channels
• Compensation for low beta transistors, two programmable alarm temperature thresholds
• Flexible I²C/SMBus interfaces to a variety of microcontrollers
• NVM facilitates configuration and fault logging
• Supply voltage range from 3V to 3.6V
• Shutdown supply current is 175µA typ at (shutdown: EN = 0V)
• Temperature resolution is 0.0625°C typ at (TA = -40°C to +125°C)
• Temperature range from -40°C to +125°C
• 24-pin TQFN-EP package