Offset Error Reduction Using a Gate-Bulk-Driven Error Correction Amplifier for a Low-Voltage Subbandgap Reference

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Presented is a gain-boosted gate-bulk-driven error correction amplifier with reduced offset errors for low-voltage sub-bandgap reference designs. The method can be applied to sub-bandgap circuits with BJT diodes, subthreshold MOSFETs or Schottky barrier diodes. Detailed analysis and circuit implementation are presented. Low voltage operation has been verified over − 55 to 125 °C. Simulation and measurement results demonstrate the minimised offset error and improved supply sensitivity, which indicates the effectiveness of the proposed gain boosting mechanism.
Original languageEnglish
Pages (from-to)694-696
JournalElectronics Letters
StatePublished - May 23 2013


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