Talk:Bandgap voltage reference

The schematic has resistors labelled R1 and R2 but these are not the first and second resistor mentioned in the text and it is therefore totally confused. — Preceding unsigned comment added by 2001:630:212:238:62A4:4CFF:FED0:3B32 (talk) 14:52, 29 January 2015 (UTC)

"The resulting voltage is about 1.2–1.3 V, depending on the particular technology and circuit design, and is close to the theoretical 1.22 eV bandgap of silicon at 0 K." Can someone explain in what way it makes sense to compare Voltage and Energy (eV) ? Intellec7 (talk) 18:45, 7 November 2016 (UTC)


 * see Electronvolt article intro: "a measure of an amount of kinetic energy gained by a single electron accelerating from rest through an electric potential difference of one volt in vacuum." Em3rgent0rdr (talk) 00:28, 20 January 2024 (UTC)

Should add a graph of the circuit's linear extrapolation of bandgap to reach its determination of 0K reference.
For now I've written as: "the resulting voltage is about 1.2–1.3V for silicon (Si). Although silicon's band gap at 0K is technically 1.165eV, the circuit essentially linearly extrapolates the curve to reach its reference voltage, ..."

I quickly cited two university slides showing this extrapolation. A picture is worth a thousand words, so maybe someone can find or create a creative-commons/public domain graph showing this extrapolation, to help clarify why the bandgap reference circuit calculates a slightly higher voltage than the actual corresponding bandgap. Em3rgent0rdr (talk) 00:32, 20 January 2024 (UTC)