TY - GEN
T1 - A 2.1-μW 0.3V-1.0V wide locking range multiphase DLL using self-estimated SAR algorithm
AU - Chang, Yi Ming
AU - Chang, Ming Hung
AU - Hwang, Wei
PY - 2009/12/1
Y1 - 2009/12/1
N2 - This paper presents an all-digital multiphase delay-locked loop (ADMDLL) for wide-locking range and micro-power applications. To enhance locking range of the ADMDLL, we proposed the self-estimated successive approximation register-controlled (SESAR) algorithm, which uses the frequency-estimation selector (FES) to avoid harmonic lock issue. In addition, the FES can reuse the delay line to reduce circuit area and power dissipation significantly. By using the stack effect, the proposed leakage-reduced delay unit can save 12% leakage power consumption. After locking, the dynamic frequency monitor window is proposed to compensation phase error caused by PVT variations. The proposed ADMDLL is capable of operating in wide supply voltage range from 0.3V to 1.0V. The power dissipation is only 520μW at 1.25GHz/1.0V, and 2.1μW at 13MHz/0.3V, respectively. This work is based on UMC 90nm standard CMOS technology.
AB - This paper presents an all-digital multiphase delay-locked loop (ADMDLL) for wide-locking range and micro-power applications. To enhance locking range of the ADMDLL, we proposed the self-estimated successive approximation register-controlled (SESAR) algorithm, which uses the frequency-estimation selector (FES) to avoid harmonic lock issue. In addition, the FES can reuse the delay line to reduce circuit area and power dissipation significantly. By using the stack effect, the proposed leakage-reduced delay unit can save 12% leakage power consumption. After locking, the dynamic frequency monitor window is proposed to compensation phase error caused by PVT variations. The proposed ADMDLL is capable of operating in wide supply voltage range from 0.3V to 1.0V. The power dissipation is only 520μW at 1.25GHz/1.0V, and 2.1μW at 13MHz/0.3V, respectively. This work is based on UMC 90nm standard CMOS technology.
UR - http://www.scopus.com/inward/record.url?scp=77949605969&partnerID=8YFLogxK
U2 - 10.1109/SOCCON.2009.5398082
DO - 10.1109/SOCCON.2009.5398082
M3 - Conference contribution
AN - SCOPUS:77949605969
SN - 9781424452200
T3 - Proceedings - IEEE International SOC Conference, SOCC 2009
SP - 115
EP - 118
BT - Proceedings - IEEE International SOC Conference, SOCC 2009
Y2 - 9 September 2009 through 11 September 2009
ER -