THIS PAPER WILL DESCRIBE a Transversal Canceler and Equalizer (TCE) chip that integrates an adaptive 24th-order echo canceler with a user-programmable eighth order gain and slope equalizer. The chip is fabricated in a two-level polysilicon, 3.5p CMOS technology. An additional non-critical implant allows for both enhancement and depletion mode N-channel devices. Both analog sampled-data and digital techniques are used in the implementation of the two transversal filters. All necessary digital timing and contro…
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