Low voltage low power current mode analog to digital converter flash

摘要

This paper presents a new CMOS low voltage low power current-mode analog to digital converter (ADC) flash 4 bits. The ADC circuit employs track-and-hold circuit, current comparators, encoder and D-latches synchronized. ELDO simulators using 0.18 μm CMOS TSMC parameters are performed to confirm the workability of this circuit. The proposed ADC circuit is powered with a 1 V supply voltage. It is characterized by wide conversion frequency (3.33 GHz) and low power consumption to about 1.3 mW.