ADM1032ARMZ-2

Product Summary

The ADM1032ARMZ-2 is a dual-channel digital thermometer and under/overtemperature alarm intended for use in PCs and thermal management systems. The device can measure the temperature of a remote thermal diode, which can be located on the processor die or can be a discrete device (2N3904/06), accurate to 1℃. A novel measurement technique cancels out the absolute value of the transistors base emitter voltage so that no calibration is required. The ADM1032ARMZ-2 also measures its ambient temperature. The ADM1032ARMZ-2 communicates over a 2-wire serial interface compatible with System Management Bus (SMBus) standards. Under/overtemperature limits can be programmed into the device over the SMBus, and an ALERT output signals when the on-chip or remote temperature measurement is out of range. This output can be used as an interrupt or as a SMBus alert. The THERM output is a comparator output that allows CPU clock throttling or on/off control of a cooling fan.

Parametrics

ADM1032ARMZ-2 absolute maximum ratings: (1)Positive Supply Voltage (VDD)to GND: -0.3, +5.5 V; (2)D+: -0.3 to VDD + 0.3 V; (3)D- to GND: -0.3 to +0.6 V; (4)SCLK, SDATA, ALERT: -0.3 to +5.5 V; (5)THERM: -0.3 to VDD + 0.3 V; (6)Input Current, SDATA, THERM: -1, +50 mA; (7)Input Current, D-: ±1 mA; (8)ESD Rating, All Pins (Human Body Model): >1000 V; (9)Maximum Junction Temperature (TJ Max): 150 ℃; (10)Storage Temperature Range -65 to +150 ℃; (11)IR Reflow Peak Temperature 220 ℃; (12)IR Reflow Peak Temperature for Pb-Free 260 ℃; (13)Lead Temperature (Soldering 10 sec)300 ℃.

Features

ADM1032ARMZ-2 features: (1)On−Chip and Remote Temperature Sensing; (2)Offset Registers for System Calibration; (3)0.125℃ Resolution/1℃ Accuracy on Remote Channel; (4)1℃ Resolution/3℃ Accuracy on Local Channel; (5)Fast (Up to 64 Measurements Per Second); (6)2-Wire SMBus Serial Interface; (7)Supports SMBus Alert; (8)Programmable Under/Overtemperature Limits; (9)Programmable Fault Queue; (10)Overtemperature Fail-Safe THERM Output; (11)Programmable THERM Limits; (12)Programmable THERM Hysteresis; (13)170 μA Operating Current; (14)5.5 μA Standby Current; (15)3.0 V to 5.5 V Supply; (16)Small 8-Lead SOIC and MSOP Packages; (17)These are Pb-Free Devices.

Diagrams