An 8-Bit Current-Mode Folding ADC with Optimized Active Averaging Network


1 Department of Electronical Engineering,Sharif University of Technology

2 Department of Electrical Engineering and Computer Science,Case Western Reserve University


In this paper, an 8-bit CMOS current-mode folding-interpolating ADC is presented. A new
active averaging-interpolating network is described, which results in a better error correction
factor compared to its resistive counterpart. Using novel circuits for fast settling and careful
transistor sizing, a fast (>160 Msps) and low power (70 mW in 2.5 V supply voltage) 8-bit
ADC, with a total chip area of 1  1:4 mm in a 0.25 micron CMOS process, is demonstrated.