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Bandgap Reference Design

License

A simple bandgap topology is evaluated with a set of simulations and then implemented in open-source EDA tools. Please refer to this git repo for detailed information on the design (https://github.com/vsdip/avsdbgp_3v3_sky130_v1).

Bandgap Performance Characteristics

ParameterDescriptionMinTypeMaxUnitCondition
Technology130 nm CMOS Process
RLLoad resistance at Vbgp terminal100MohmVDD=3.3V, T=27C
VbgpOutput Reference voltage1.1976421.2010571.212476VT=-40 to 140C, VDD=3.3V
VbgpOutput Reference voltage1.1782851.2010571.211677VVDD=2.7V to VDD=3.6V, T=27C
TC_vbgpTemperature Coefficient of Vbgp6.8717ppm/CT=-40 to 140C, VDD=3.3V
VC_vbgpVoltage Coefficient of Vbgp2.7802%/VVDD=2.7V to 3.6, T=27C
VDDSupply Voltage3.23.33.6VT=-40C to 140C
IDDSupply Current3.954uAEN=1
IDDSupply Current607.836nAEN=0

Here are some reference links used to learn to design in open source EDA tools and about bandgap reference circuit design.

  1. https://github.com/nickson-jose/vsdstdcelldesign

  2. https://github.com/praharshapm/vsdmixedsignalflow

  3. https://github.com/sherylcorina/avsdbgp_3v3

  4. https://github.com/an3ol/General-purpose-Bandgap-Reference-avsdbgp_3v3

  5. https://www.udemy.com/course/vlsi-academy-custom-layout/

Acknowledgement