L. Benvenuti, A. Catania, M. Cicalini, A. Ria, M. Piotto and P. Bruschi, "A 0.3 V 15 nW 69 dB SNDR Inverter-Based Δ∑ Modulator in 0.18 μm CMOS," 2019 15th Conference on Ph.D Research in Microelectronics and Electronics (PRIME), Lausanne, Switzerland,