Temperature compensation circuit

摘要

A temperature compensation circuit is disclosed. A temperature compensation circuit may include a temperature coefficient generator configured to generate a first signal and a second signal, wherein the first signal is proportional-to-absolute-temperature (ptat) and the second signal is negatively-proportional-to-absolute-temperature (ntat), a first programmable element configured to multiply at a first programmable ratio an amplitude of a third signal having a negative temperature coefficient from a first temperature to a second temperature, and a second programmable element configured to multiply at a second programmable ratio an amplitude of a fourth signal having a positive temperature coefficient from the second temperature to a third temperature.

主权项

1. A temperature compensation circuit, comprising:
a temperature coefficient generator configured to generate a proportional-to-absolute-temperature (ptat) signal and a negatively-proportional-to-absolute-temperature (ntat) signal; and a programmable temperature-coefficient combiner configured to output a temperature compensation signal having combined temperature coefficient based on a first programmable temperature coefficient across a first temperature range and a second programmable temperature coefficient across a second temperature range, the first and second programmable temperature coefficients each based on the ptat signal and the ntat signal.