ADT7481ARMZ-REEL

ADT7481ARMZ-REEL is a 3-channel digital thermometer and under/ over temperature alarm, intended for use in PCs and thermal management systems. It can measure its own ambient temperature or the temperature of two remote thermal diodes. This thermal diode can be located in a CPU or GPU, or they can be discrete diode connected transistors. The ADT7481 communicates over a 2-wire serial interface compatible with system management bus (SMBus) standards. An active-low ALERT output signals when the on-chip or remote temperature is outside the programmed limits. Applications include desktop and notebook computers, industrial controllers, smart batteries, automotive, embedded systems, burn-in applications, instrumentation.

• 0.25°C resolution/1°C accuracy on remote channels
• 1°C resolution/1°C accuracy on local channel
• 2-wire SMBus serial interface with SMBus active-low ALERT support
• Programmable over/under temperature limits
• Offset registers for system calibration
• Up to 2 overtemperature fail-safe active-low THERM outputs
• 3.3V typ VDD supply voltage
• 3mA typ average operating supply current at (0.0625 conversions/sec rate)
• Storage temperature range from -65 to 150°C
• 10-lead MSOP package