Body biasing for analog design: Practical experiences in 22 nm FD-SOI

This paper presents the practical application of body biasing control of ultra-deep submicron FD-SOI technologies for analog and mixed-signal designs. The body biasing control is dedicated for dynamic control of the tradeoff between speed vs. power consumption for advanced digital circuits. However, in this work we focus on trading-off and improvement of analog circuit performances. Three different circuits were explored and designed: an all CMOS bandgap reference, a 500 MSps current-steering DAC, and a 12-bit sigma-delta modulator. All designs were verified and realized in Globalfoundries 22 nm FD-SOI technology.