Hi all How to check `PSRR` power supply rejection ratio in B open-source-silicon.dev #sky130

Hi all, How to check `PSRR`(power supply rejection...

ALOK PRATAP SINGH

07/18/2023, 5:40 AM

Hi all, How to check `PSRR`(power supply rejection ratio) in BGR. I have refrence voltage 1.23V

Krzysztof Herman

07/18/2023, 6:21 AM

Hi @ALOK PRATAP SINGH, what about making .tf

Krzysztof Herman

07/18/2023, 6:22 AM

you could also perform an AC sweep using the V1 source as input.

Stefan Schippers

07/19/2023, 6:26 AM

For PSRR as @Krzysztof Herman said, apply an AC signal on supply (magnitude 1, phase 0) and perform a

.ac

analysis. Magnitude and phase of the output is the

VCC -> Vref

transfer function (PSRR)

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