Nonuniform Pulse Code Modulation Encoder using Double Polysilicon Technology

A new monolithic PCM-encoder is presented. It essentially consists of a single eleven bit double polysilicon capacitor array and an improved multiple access comparator. No unity gain amplifier is required. The circuit meets the CCIT specifications.

[1]  M. Tompsett,et al.  Sensing technique for self-contained charge-coupled split-electrode filters , 1977, 1977 IEEE International Solid-State Circuits Conference. Digest of Technical Papers.

[2]  H. Kaneko.  A unified formulation of segment companding laws and synthesis of codecs and digital compandors , 1970 .

[3]  L. G. Heller,et al.  High sensitivity charge-transfer sense amplifier , 1975 .

[4]  I.A. Young,et al.  MOS switched-capacitor analog sampled-data direct-form recursive filters , 1979, IEEE Journal of Solid-State Circuits.

[5]  D. Hodges,et al.  Analog NMOS sampled-data recursive filter , 1977, 1977 IEEE International Solid-State Circuits Conference. Digest of Technical Papers.

[6]  P. R. Gray,et al.  Companded pulse-code modulation voice codec using monolithic weighted capacitor arrays , 1975 .

[7]  Robert W. Brodersen,et al.  Potential of MOS Technologies for Analog Integrated Circuits , 1977, ESSCIRC '77: 3rd European Solid State Circuits Conference.

[8]  D.A. Hodges,et al.  High-performance NMOS operational amplifier , 1978, IEEE Journal of Solid-State Circuits.