ADT7461A

www.DataSheet4U.com ±1°C Temperature Monitor with Series Resistance Cancellation ADT7461A FEATURES On-chip and remote temperature sensor 0.25°C resolution/1°C accuracy on remote channel 1°C resolution/1°C accuracy on local channel Automatically cancels up to 1.5 kΩ (typical) of resistance in series with remote diode to allow noise filtering Extended, switchable temperature measurement range 0°C to +127°C (default) or –64°C to +191°C Pin- and register-compatible with ADM1032 and ADT7461 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 THERM outputs Small 8-lead MSOP 240 μA operating current, 5 μA standby current APPLICATIONS Desktop and notebook computers Industrial controllers Smart batteries Automotive Embedded systems Burn-in applications Instrumentation FUNCTIONAL BLOCK DIAGRAM ADDRESS POINTER REGISTER ON-CHIP TEMPERATURE SENSOR CONVERSION RATE REGISTER LOCAL TEMPERATURE VALUE REGISTER LOCAL TEMPERATURE LOW-LIMIT REGISTER LOCAL TEMPERATURE HIGH-LIMIT REGISTER REMOTE TEMPERATURE LOW-LIMIT REGISTER REMOTE TEMPERATURE HIGH-LIMIT REGISTER LOCAL THERM LIMIT REGISTERS EXTERNAL THERM LIMIT REGISTERS CONFIGURATION REGISTERS INTERRUPT MASKING 6 4 DIGITAL MUX LIMIT COMPARATOR D+ 2 D– 3 ANALOG MUX A-TO-D CONVERTER BUSY RUN/STANDBY REMOTE TEMPERATURE VALUE REGISTER REMOTE OFFSET REGISTER EXTERNAL DIODE OPEN-CIRCUIT STATUS REGISTER DIGITAL MUX ALERT/TH...