What the ADM1031ARQ-REEL brings to a thermal management loop
The ADM1031ARQ-REEL is an intelligent temperature monitor with fan control, integrating an ADC, comparator, multiplexer, and register bank in a 16-QSOP package.
Accuracy and sensing — what the numbers mean for your BOM
The ±1°C local accuracy and ±0.5°C remote accuracy are the specs that determine whether this part holds your thermal budget. The tighter remote channel (±0.5°C) is the one that matters when you are tracking a processor die or a hot spot on a power stage — a 0.5°C window keeps the fan response from hunting. The local sensor (±1°C) is adequate for ambient or board-temperature monitoring. If your design needs better than ±0.5°C on the remote channel, you step up to a dedicated remote-diode temperature sensor; if you only need ambient monitoring, a simpler SMBus temp sensor without fan control costs less.
Package and mounting — the 16-QSOP footprint
The ADM1031ARQ-REEL is supplied in a 16-QSOP package (3.90 mm body width) for surface-mount assembly.
Sourcing this part
The ADM1031ARQ-REEL is sourced to order through independent distribution. Because the part is Active, there is no urgency to stockpile — but the Bulk shipping medium and RoHS-non-compliant status mean you should confirm the packaging and compliance match your BOM requirements before committing the line.