Jim Williams’ Analog IQ #14

This week’s analog IQ test leads us down the road of BJT temperature sensors, delta Vbe’s, and diode theory! But how well does the theory hold up in the real world?

Description Reference
PN junction temperature curves The Effect of Temperature on Diode Characteristics, Concepts Electronics
Accurate Temperature Sensing with an External P-N Junction Linear Technologies Application Note 137, Michael Jones
The Brokaw band-gap circuit, explained by Paul Brokaw himself! A Transistor Voltage Reference and What the Band-Gap Has To Do With it, A. Paul Brokaw
Measured temperature vs Vbe characteristics What’s All This VBE Stuff, Anyhow?, Bob Pease