Voltage reference and bandgap circuits
Basic blocks for voltage reference circuits
Characteris8cs of bipolar transistors
Temperature dependence of BJT characteris8cs
Temperature dependence of ΔVBE
Temperature-‐compensa8on of VBE voltage
Temperature-‐constant Reference Voltage: “Bandgap-‐Reference”
Opera8on of Bandgap-‐Reference Circuit
Bandgap-‐Reference Circuit
Gummel plot of BJT
Startup-‐Problem of Bandgap-‐Reference Circuit
Adjustment of bandgap reference voltage
Undervoltage detec8on circuit based on the bandgap reference principle
Undervoltage detec8on circuit
CMOS Compa8ble Bandgap Reference
Bandgap reference with all npn-‐collectors connected to VDD
Bandgap reference in a n-‐well CMOS technology
„Widlar“ Bandgap – Reference
Current -‐ Reference based on ΔVBE
Cross-‐coupled current source based on ΔVBE
Adjustable Z-‐diode
Z-‐diode voltage mul8plier
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