The ADM1032ARZ-REEL is a ±1C° remote and ±3C° local system temperature monitor in 8 pin SOIC package. This 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°C. A novel measurement technique cancels out the absolute value of the transistor's base emitter voltage so that no calibration is required. The IC also measures its ambient temperature. It communicates over a 2-wire serial interface compatible with system management bus (SMBus) standards. It is used in desktop and notebook computers, smart batteries, industrial controllers, telecommunications equipment, instrumentation and embedded systems.
Feature
- Supply voltage range from 3V to 5.5V
- Operating current of 170µA and standby current of 5.5µA
- Offset registers for system calibration
- 0.125°C resolution/1°C accuracy on remote channel
- Fast (up to 64 measurements per second)
- Supports SMBus alert, 4C SMBus address
- Programmable under/overtemperature limits, programmable fault queue
- 0.125°C resolution on remote channel and 1°C resolution on local channel
- Overtemperature fail-safe THERM (complementary) output, Programmable THERM (complementary) limits
- Programmable THERM (complementary) hysteresis
