A 14-bit, 5-MHz digital-to-analog converter using multi-bit /spl Sigma//spl Delta/ modulation

A 14-bit D/A converter based on a pipelined fourth-order multi-bit sigma-delta modulator is presented. The 6-bit digital output of this modulator is converted to analog using current calibration. The converter achieves 85-dB dynamic range at 5-MHz signal bandwidth, using a single 2.5-V supply in 0.5-/spl mu/m CMOS process.