ADM1023 ACPICompliant, High Accuracy Microprocessor System Temperature Monitor The ADM1023 is a 2-channel digital thermometer and under/overtemperature alarm for use in personal computers and other ADM1023 ADDRESS POINTER REGISTER ONESHOT REGISTER CONVERSION RATE REGISTER OFFSET ONCHIP REGISTERS TEMPERATURE SENSOR LOCAL TEMPERATURE LOCAL TEMPERATURE LOCAL TEMPERATURE LOWLIMIT REGISTER VALUE REGISTER LOWLIMIT COMPARATOR LOCAL TEMPERATURE LOCAL TEMPERATURE 3 HIGHLIMIT COMPARATOR D+ HIGHLIMIT REGISTER A TOD ANALOG CONVERTER MUX D 4 REMOTE TEMPERATURE REMOTE TEMPERATURE LOWLIMIT COMPARATOR BUSY RUN/STANDBY LOWLIMIT REGISTERS REMOTE TEMPERATURE REMOTE TEMPERATURE REMOTE TEMPERATURE VALUE REGISTERS HIGHLIMIT COMPARATOR HIGHLIMIT REGISTERS CONFIGURATION 15 REGISTER STBY EXTERNAL DIODE OPENCIRCUIT INTERRUPT 11 ALERT STATUS REGISTER MASKING ADM1023 SMBus INTERFACE 1 2 5 7 8 9 13 16 12 14 10 6 NC V NC GND GND NC NC NC SDATA SCLK ADD0 ADD1 DD NC = NO CONNECT Figure 1. Functional Block Diagram Table 1. ABSOLUTE MAXIMUM RATINGS Parameter Rating Unit Positive Supply Voltage (V ) to GND 0.3 to +6.0 V DD D+, ADD0, ADD1 0.3 to V + 0.3 V DD D to GND 0.3 to +0.6 SCLK, SDATA, ALERT, STBY 0.3 to +6.0 V Input Current 50 mA Input Current, D 10 mA ESD Rating, All Pins (Human Body Model) 2000 V Continuous Power Dissipation Up to 70C 650 mW Derating Above 70C 6.7 mW/C Operating Temperature Range 55 to +125 C Maximum Junction Temperature (T max) 150 C J Storage Temperature Range 65 to +150 C Lead Temperature, Soldering (10 s) 300 C IR Reflow Peak Temperature 220 C IR Reflow Peak Temperature for Pb-Free 260 C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. NOTE: This device is ESD sensitive. Use standard ESD precautions when handling. Table 2. THERMAL CHARACTERISTICS Parameter Rating 16-Lead QSOP Package = 105C/W, = 39C/W JA JC