Reference circuitry and method of operating the same

摘要

A circuit for maintaining a generated reference voltage at a substantially constant level for a range of temperatures. The circuitry comprising: a first circuit arranged to generate a first voltage having a first temperature characteristic, and a second circuit arranged to generate a second voltage having a second temperature characteristic. The second voltage compensates for the first voltage to maintain the reference voltage at a substantially constant level over a first temperature range. The circuit also having a third circuit arranged to act in a second temperature range to compensate for the first voltage to maintain the reference voltage at a substantially constant level in the second temperature range.