Abstract
A novel low power charge pump (CP) that minimizes the mismatch between the charging and the discharging currents is proposed in this paper. The switching circuit with dynamic current compensation is used to reduce the power consumption of the proposed CP. In addition, precise current replication which makes use of the resistors and the low offset operational amplifiers (OTA) can enable a reduction in current mismatch caused by process mismatch. Meanwhile, the high output impedance can reduce the current mismatch caused by the channel length modulation effect. Based on the 0.18[Formula: see text][Formula: see text]m deep-Nwell CMOS process, the proposed CP can reduce the overall power consumption by 56% compared with the CP without current compensation, reduce the current mismatch caused by process mismatch to less than 0.9% and reduce the current mismatch caused by the channel length modulation effect to less than 0.01% over the output voltage ranging from 0.3 to 1.5[Formula: see text]V with 1.8[Formula: see text]V supply.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.