Title :
A PCM voice codec with on-chip filters
Author :
Caves, J.T. ; Rosenbaum, S.D. ; Sellars, L.P. ; Chan, C.H. ; Terry, J.B.
Abstract :
Describes a monolithic NMOS coder/decoder (codec) with associated CCD transversal minimum phase filters which has been successfully implemented. The codec operates by charge redistribution in a binary-weighted capacitor array, with a resistor chain to define individual steps. The experimental performance compares well with PCM codecs implemented with discrete components.
Keywords :
Active filters; Charge-coupled device circuits; Code convertors; Decoding; Encoding; Field effect integrated circuits; Pulse-code modulation; active filters; charge-coupled device circuits; code convertors; decoding; encoding; field effect integrated circuits; pulse-code modulation; Capacitors; Charge coupled devices; Circuits; Codecs; Crosstalk; Decoding; Gold; Phase change materials; Pulse modulation; Transversal filters;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1979.1051143
