• 简体中文
• English

MAX6581：±1°C Accurate 8-Channel Temperature Sensor

Saves Cost and Space (Monitors Up to Seven External Temperatures, as Well as Its Own Die Temperature)

The MAX6581 precision multichannel temperature sensor monitors its own temperature and the temperatures of up to seven external diode-connected transistors. All temperature channels have programmable alert and overtemperature thresholds. When the measured temperature of a channel crosses the respective threshold, a status bit is set in one of the status registers. Two open-drain alarm outputs (active-low ALERT and active-low OVERT) assert corresponding to these bits in the status register(s). Resistance cancellation is available for all channels and compensates for high series resistance in circuit-board traces and thermal diodes. The 2-wire serial interface accepts SMBus protocols (write byte, read byte, send byte, and receive byte) for reading the temperature data and programming the alarm thresholds. The MAX6581 is specified for an operating temperature range of -40°C to +125°C and is available in a 24-pin, 4mm × 4mm thin QFN package with an exposed pad.

Key Features Eight Channels to Measure Seven Remote and One Local Temperature 11-Bit, 0.125°C Resolution High Accuracy of ±1°C (max) from +60°C to +100°C (Remote Channels) -64°C to +150°C Remote Temperature Range Programmable Undertemperature/Overtemperature Alerts SMBus/I²C-Compatible Interface Two Open-Drain Alarm Outputs (Active-Low ALERT and Active-Low OVERT) Resistance Cancellation on All Remote Channels

MAX6581: Typical Application Circuit Applications/Uses Data Communications Desktop Computers Notebook Computers Servers Workstations

DataSheet

Parametrics

Design kits & evaluation modules

• MAX6581EVKIT

Quality and Environmental Data

• MAX6581.pdf

Ordering Information