Title :
A monolithic analog compandor
Abstract :
Describes a bipolar IC analog dynamic range compandor. The approach taken to implement the compressor and expandor functions is discussed, and the active full wave rectifier and variable gain cell are described in detail. Performance easily exceeds telecommunications requirements and is suitable for use in high quality audio systems. The full wave rectifier has excellent accuracy over a 60-dB dynamic range. The variable gain element offers low distortion (<0.1 percent) attenuation with high signal to noise ratio (90 dB). Ion-implanted resistors have been used for lower temperature sensitivity.
Keywords :
Bipolar integrated circuits; Compandors; Linear integrated circuits; bipolar integrated circuits; compandors; linear integrated circuits; Analog integrated circuits; Attenuation; Audio systems; Bipolar integrated circuits; Distortion; Dynamic range; Gain; Rectifiers; Resistors; Signal to noise ratio;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1976.1050814
