Maxim Launches MAX6581 Temperature Sensor with Advanced Features

Maxim has launched an eight-channeled MAX6581 temperature sensing device with a ±1°C precision capacity. The sensor features seven remote sensing passages to check FPGAs, CPUs, ASICs and boards with various thermal points.

Most of the remote channels carry out beta compensation and series resistance cancellation for high-precision. The eight-channeled thermal sensor needs only single I²C address.

The unique MAX6581 monitors die temperatures of the external IC’s that have incorporated thermal diodes. This sensor counterbalances the parasitical series resistance. All the temperature channels feature adjustable warning systems and extreme temperature limits. A status-bit logs in a status recorder when the channel temperature surmounts. Two open-drain outputs with alarm warnings (active-low OVERT and active-low ALERT) get activated with reference to these bits in the status recorder. The dual-wire connection interface uses SMBus protocols (read byte, write byte, send byte, and receive byte) for monitoring the temperature information and for programming the alarm system limits.

The device is enclosed in a 24-pin TQFN package which is about 4mm x 4mm size with an uncovered pad and the working temperature of the device is in the range of -40°C to +125°C.