Explain use of multiple supply voltages for low powerSolutio

Explain use of multiple supply voltages for low power?

Solution

https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.maximintegrated.com/en/app-notes/index.mvp/id/1133&ved=0ahUKEwjph_-7huLMAhUBIqYKHdp7CxcQFggjMAI&usg=AFQjCNEWInhjHhEOVeCVGLgKI68iwEd0yQ&sig2=c9wsjfb6epZ7L-KRXwe7gg