Key Features & Specifications

• Adjustable de-emphasis for one pre- and 2 post-cursors of 0 to 12 dB

• Supports data rates from 660 Mb/s to 14.2 Gb/s

• Tolerates non-balanced patterns

• Transparent to jitter

• Flexible usage as front-end for J-BERT N4903B, ParBERT 81250A or other pattern generators

• Small sizeProgrammable via J-BERT N4903B or stand-alone

Description

The de-emphasis technique is used in the transmission of digital electrical signals at gigabit data rates. De-emphasis is a signal pre-distortion to compensate for signal degradations that occur when transmitting electrical signals with gigabit rates over PC board traces, backplanes, or long cables. With the next generation of serial bus standards operating above 5 Gb/s, sophisticated de-emphasis with multi-tap Finite Impulse Response (FIR) filtering will be needed.