A dual-channel Sigma Delta voiceband PCM codec
V. Friedman, D.M. Brinthaupt, D.-P. Chen, T.W. Deppa, J.P. Elward, E.M. Fields, Jeff W. Scott, T.R. Viswanathan · 2003
A dual-channel Sigma Delta voiceband codec meeting AT&T/CCITT specifications is described. The active area per channel is 13 mm/sup 2/ in a 1.5- mu m CMOS process. It has only one power supply, and the maximum power dissipation is 90 mW per channel. The crosstalk between channels is less than 71 dB.>