A 52MHz -158.2dBc/Hz PN @ 100kHz Digitally Controlled Crystal Oscillator Utilizing a Capacitive-Load-Dependent Dynamic Feedback Resistor in 28nm CMOS. - Jaehong Jung; Seungjin Kim; Wonkang Kim; Jae-Yeol Han; Euiyoung Park; Seongwook Hwang; Seunghyun Oh; Sangwook Han; Kyungsoo Lee; Junho Huh; Jongwoo Lee (ISSCC, 2022)