EVAL-ADT7483AEB [Onsemi]

The ADT7483A is a three-channel digital thermometer and under/over temperature alarm that measures temperature in two remote locations (e.g., CPU/GPU thermal diodes or discrete transistors) and its own ambient temperature. It features ±1°C accuracy for both remote and ambient measurements, with a default temperature measurement range of 0°C to 127°C (compatible with ADM1032) that can be switched to an extended range of -64°C to +191°C. The device communicates via a 2-wire SMBus serial interface with up to 9 programmable addresses. It includes ALERT and THERM outputs for temperature limit warnings and fan control, with the ALERT output reconfigurable as a second THERM output. Key features include programmable over/under temperature limits, offset registers for system calibration, low power consumption (240μA operating, 5μA standby), and a small 16-lead QSOP package. The device is Pb-Free, Halogen Free, and RoHS compliant.