CLC012 Datasheet | National Semiconductor

Description National’s CLC012 adaptive cable equalizer is a low-cost monolithic solution for equalizing data transmitted over cable (or any media with similar dispersive loss characteristics). The CLC012 simplifies the task of high-speed data recovery with a one-chip solution and a minimal number of external ponents. The equalizer automatically adapts to equalize any cable length from zero meters to lengths that attenuate the signal by 40 d B at 200 MHz. This corresponds to 300 meters of Belden 8281 or 120 meters of Category 5 UTP (unshielded twisted pair). The CLC012 provides superior jitter performance: 180pspp for 270 Mbps data that has passed through 200 meters of Belden 8281 cable. This exceptional performance provides wide error margin in digital data links. The equalizer operates on a single supply with a power consumption of only 290 m W. The small 14-pin SOIC package allows for high-density placement of ponents for multi-channel applications such as routers. The equalizer operates over a wide range of data rates from less than 50 Mbps to rates in excess of 650 Mbps. The equalizer is flexible in allowing either single-ended or differential input drive. Its high mon mode rejection provides excellent immunity to interference from noise sources. On-chip quantized feedback eliminates baseline wander. Additional features include a Loss of Signal output and an output mute pin which, when tied together, mute the output when no signal is present. A buffered eye monitor output is provided, for viewing the equalized signal prior to the parator. Differential AEC pins allow the user to set the internal adaptive loop time constant with one external capacitor. Features n n n n n n Automatic equalization of coaxial and twisted pair cables Loss of Signal detect and output mute Output eye monitor Single supply operation: +5V or - 5.2V Single-ended or differential input Low cost Applications n n n n ITU-T G.703 serial data recovery Serial digital data routing and distribution...