Dual Channel Temperature Sensor and Over Temperature Alarm

The ADT7483A is a three-channel digital thermometer and under/over temperature alarm, intended for use in PCs and thermal management systems. It can measure the temperature in two remote locations, for example, the remote thermal diode in a CPU or GPU, or a discrete diode connected transistor. It can also measure its own ambient temperature. The temperature of the remote thermal diode and ambient temperature can be accurately measured to ±1°C. The temperature measurement range defaults to 0°C to 127°C, compatible with ADM1032, but can be switched to a wider measurement range, from −64°C to +191°C.

FEATUREs
• 1 Local and 2 Remote Temperature Sensors
• 0.25°C Resolution/1°C Accuracy on Remote Channels
• 1°C Resolution/1°C Accuracy on Local Channel
• Extended, Switchable Temperature Measurement Range 0°C to 127°C (Default) or –64°C to +191°C
• 2-wire SMBus Serial Interface with SMBus Alert Support
• Programmable Over/Under Temperature Limits
• Offset Registers for System Calibration
• Up to 2 Overtemperature Fail-safe THERM Outputs
• Small 16-lead QSOP Package
• 240 μA Operating Current, 5 μA Standby Current
• This Device is Pb-Free, Halogen Free and is RoHS Compliant

APPLICATIONs
• Desktop and Notebook Computers
• Industrial Controllers
• Smart Batteries
• Automotive
• Embedded Systems
• Burn-in Applications
• Instrumentation