Bandgap Reference Design
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 design (https://github.com/vsdip/avsdbgp_3v3_sky130_v1).
Bandgap Performance Characteristics
| Parameter | Description | Min | Type | Max | Unit | Condition |
|---|
| Technology | 130 nm CMOS Process | | | | | |
| RL | Load resistance at Vbgp terminal | 100 | | | Mohm | VDD=3.3V, T=27C |
| Vbgp | Output Reference voltage | 1.197642 | 1.201057 | 1.212476 | V | T=-40 to 140C, VDD=3.3V |
| Vbgp | Output Reference voltage | 1.178285 | 1.201057 | 1.211677 | V | VDD=2.7V to VDD=3.6V, T=27C |
| TC_vbgp | Temperature Coefficient of Vbgp | | 6.8717 | | ppm/C | T=-40 to 140C, VDD=3.3V |
| VC_vbgp | Voltage Coefficient of Vbgp | | 2.7802 | | %/V | VDD=2.7V to 3.6, T=27C |
| VDD | Supply Voltage | 3.2 | 3.3 | 3.6 | V | T=-40C to 140C |
| IDD | Supply Current | | 3.954 | | uA | EN=1 |
| IDD | Supply Current | | 607.836 | | nA | EN=0 |
