Temperature monitors

Maxim has introduced the MAX6622/MAX6636 ±1°C accurate, 5-/7-channel temperature sensors.

The 6622 accurately measures its own temperature and the temperature of up to four external locations — such as CPUs, memory, GPUs and other heat-sensitive components — while the 6636 accurately measures its own temperature and up to six external locations.

In both, one remote channel is optimised to provide accurate temperature measurements, even when used with thermal diodes on ICs operating from power supply voltages of 0.3.

The devices increase flexibility by allowing the user to program the temperature threshold of alarm outputs. These outputs can serve as interrupts, they can be connected to a system fan, or they can be used for other thermal management circuitry. Additionally, these devices offer a hardware-standby function that eliminates false alerts at system boot.

They communicate through a 2-wire SMBus-compatible interface.

They operate from a +3.0 to +5.5 V supply and they consume 500 µA current and 30 µA in standby.