A Novel 1.2-V 4.5-ppm/°C Curvature-Compensated CMOS Bandgap Reference. - Bill Ma; Fengqi Yu (IEEE Trans. Circuits Syst. I Regul. Pap., 2014)

A 12-bit 1.74-mW 20-MS/s DAC with resistor-string and current-steering hybrid architecture. - Bill Ma; Qinjin Huang; Fengqi Yu (SoCC, 2015)