MAX6646 Datasheet (Maxim) - +145C Precision SMBus-Compatible Remote/ Local Sensors

MAX6646, +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

MAX6646 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 Progra