The MAX6627/MAX6628 precise digital temperature sensors report the temperature of a remote sensor. The remote sensor is a diode-connected transistor, typically a low-cost, easily mounted 2N3904 NPN type that replaces conventional thermistors or thermocouples. The MAX6627/MAX6628 can also measure the die temperature of other ICs, such as microprocessors (Ps) or microcontrollers (Cs) that contain an on-chip, diodeconnected transistor. Remote accuracy is 1C when the temperature of the remote diode is between 0C and +125C and the temperature of the MAX6627/MAX6628 is +30C. The temperature is converted to a 12-bit + sign word with 0.0625C resolution. The architecture of the device is capable of interpreting data as high as +145C from the remote sensor. The MAX6627/MAX6628 temperature should never exceed +125C.