What the accuracy numbers mean on the bench
The MAX6664AEE+: For a fan-control loop that triggers at 85°C, the local sensor will trip between 83°C and 87°C worst-case; the remote diode channel has a wider band but still keeps the system out of thermal runaway without a secondary thermistor.
Analog Devices lists the MAX6664AEE+ as Active with ROHS3 compliance.
