CMOS pulse-code-modulation voice codec
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A standard CMOS technology has been employed in LSI realization of a pulse-code-modulation (PCM) encoder and decoder for per-channel applications in telephony. Innovations in the design of an operational amplifier, a comparator, and precision-ratioed capacitor arrays, all in standard CMOS, are reported.
Published in:
Solid-State Circuits, IEEE Journal of
(Volume:13
,
Issue:
4
)
Date of Publication: Aug 1978