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

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 x 1.4 mm in a 0.25 micron cmos process, is demonstrated.