MAX6647 - Maxim

MAX6647 +145C Precision SMBus-Compatible Remote/ Local Sensors

The MAX6646/MAX6647/MAX6649 are precise, twochannel digital temperature sensors. The devices accurately measure the temperature of their own die and a remote PN junction, and report the temperature in digital form using a 2-wire serial interface. The remote PN junction is typically the emitter-base junction of a commoncollector PNP on a CPU, FPGA, or ASIC. T.

Features

o Dual Channel: Measures Remote and Local Temperature o 0.125°C Resolution o High Accuracy ±1°C (max) from +60°C to +145°C (Remote), and ±2°C (max) from +60°C to +100°C (Local) o Measures High-Ideality Thermal Diodes Up to +170°C (Apparent) +145°C (Real) o Two Alarm Outputs: ALERT and OVERT o Programmable Under/Overtemperature Alarm Temperature Thresholds o Programmable Conversion Rate o SMBus-Compatible Interface o SMBus Timeout MAX6646/MAX6647/MAX6649 Ordering Information PART TEMP RANGE PINMEASURED PACKAGE TEMP RANGE 0°C to +145°C 0°C to +145°C 0°C to +145°C MAX6646MUA -55°C to +125°C 8 .