Answers are grounded in this paper and cite their sources.
A sharedμ 255PCM codec has been developed for the D4 channel bank which was introduced in 1976. The codec consists of two hybrid IC's that utilize a common LSI D/A converter chip. Operating over the temperature range of 0-75°C, the codec economically provides near theoretical S/D perfornance, gain tracking of better than±0.25 dB, gain stability better than±0.15 dB, and average system performance of 14.5-dBrnCO idle channel noise and 83-dB cross-talk coupling loss. A description of this codec and the derivation of its design objectives are presented.
No takes yet. Share an insight, caveat, or question.
D.A. Spires (1978) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: