An analog background calibration technique for time-interleaved analog-to-digital converters

Abstract

Analog background calibration using adaptive signal processing, an extra channel, and mixed signal integrators matches the offsets and gains of time-interleaved channels in a 10-b 40-Msample/s pipelined analog-to-digital converter. With monolithic background calibration, the peak signal-to-noise-and-distortion ratio is 58 dR, and power dissipation is 650 mW from 5 V. The active area is 47 mm/sup 2/ in 1 /spl mu/m CMOS.