ADT7461ARZ-REEL

ADT7461ARZ-REEL is a dual-channel digital thermometer and under/over temperature alarm intended for use in PCs and thermal management systems. It is pin- and register-compatible with the ADM1032. The ADT7461 has three additional features: series resistance cancellation (where up to 3k (typical) of resistance in series with the temperature monitoring diode may be automatically cancelled from the temperature result, allowing noise filtering); configurable ALERT output; and an extended, switchable temperature measurement range. The ADT7461 can accurately measure the temperature of a remote thermal diode to ±1°C and the ambient temperature to ±3°C. The ADT7461 communicates over a 2-wire serial interface compatible with system management bus (SMBus) standards. Applications include desktop and notebook computers, industrial controllers, smart batteries, embedded systems, instrumentation.

• On-chip and remote temperature sensor
• 2-wire SMBus serial interface with SMBus alert support
• Programmable over/under temperature limits
• Offset registers for system calibration
• Up to two overtemperature fail-safe active-low THERM outputs
• Average operating supply current is 170µA typ at (0.0625 conversions/sec rate)
• Very high ESD robustness: ±8kV according to IEC61000-4-2
• SMBus clock frequency is 400KHz maximum
• Storage temperature range from -65 to +150°C
• 8-lead SOIC NB package