15602

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

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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.

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