Datasheet for the LM50, a single-supply analog temperature sensor whose output includes a fixed DC offset so it can report temperatures below zero without a negative rail, at about 10 mV per degree Celsius. The 169 KB PDF lists pinout, supply range, accuracy and application circuits. Technicians measure the output pin and subtract the offset to get temperature, separating sensor faults from monitoring circuit faults. Confirm the tiny package marking against the document before substituting another temperature sensor.
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