What this part is and what it does
The MAX6697UP34+ from Analog Devices is a digital temperature sensor that reads both its own local die temperature and up to one remote diode-junction over an SMBus interface. Local resolution is 11 bits; the remote channel resolves at 8 bits, which is coarser but sufficient for tracking a processor die or power-stage hotspot without flooding the bus with data. The part includes a programmable limit register that can trigger an alert when either channel exceeds a set threshold, plus a one-shot mode for on-demand reads that saves bus traffic in a polling loop.
Accuracy — what the numbers mean for your BOM
Local accuracy is rated ±2°C (maximum) across the full -40°C to 125°C operating range; the remote channel is ±3°C. That ±2°C local figure is tight enough for thermal-throttling decisions in a server or industrial controller — a CPU or FPGA will hit its thermal ceiling before the sensor error becomes the dominant term. The ±3°C remote tolerance means this sensor is a good fit for monitoring a hot spot (MOSFET bank, VRM inductor) where the absolute temperature matters less than the trend and the trip point has a few degrees of margin.
Supply, temperature grade, and package
Supply range is 3 V to 5.5 V. The -40°C to 125°C operating temperature and the 20-TSSOP surface-mount package put it in the industrial and automotive under-hood class — it will survive a motor-drive cabinet or an engine bay as long as the board is conformal-coated against condensation. Package is a 20-TSSOP (4.40 mm width), shipped in Tube form per the listing.
Lifecycle and sourcing posture
The MAX6697UP34+ carries an Active lifecycle status and is ROHS3 compliant.