MAX6646MUA+

The MAX6646MUA+ by Analog Devices is a high-precision, two-channel digital temperature sensor designed for accurate temperature monitoring. It measures the temperature of its own die and a remote PN junction, typically from a CPU or FPGA, reporting data via a 2-wire serial SMBus interface. This sensor operates over a wide temperature range of -55°C to +125°C, with the capability to measure temperatures from 0°C to +145°C.

Key features include a resolution of 0.125°C and high accuracy, with a maximum error of ±1°C for remote measurements between +60°C and +145°C, and ±2°C for local measurements between +60°C and +100°C. The device offers two system alarms, ALERT and OVERT, which can be programmed for under/overtemperature conditions, enabling fan control or system shutdown. It supports autonomous measurements at a programmable conversion rate or single-shot mode, allowing optimization of power consumption and update frequency.

The MAX6646MUA+ is available in an 8-pin uMAX package and is designed for surface mount applications. Its SMBus interface, along with features like SMBus timeout and a programmable fault queue, enhances system reliability. This sensor is suitable for applications requiring precise thermal management and monitoring.