Mixed-signal considerations when integrating systems

Companies such as Lucent Technologies, which was involved in pioneering efforts such as the AT&T DSP16C in 1989, have been integrating mixed-signal and DSP for close to ten years. New techniques and expertise support integration earlier in the product life-cycle with minimal risk. In fact, many mixed-signal integrated solutions implemented by Lucent´s technical staff achieved fully functional first silicon. Techniques such as those described in this paper are necessary steps along the way to achieving fully integrated digital communication ultrachips