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Gigabit equalizer touts low jitter performance

Posted: 18 Dec 2007 ?? ?Print Version ?Bookmark and Share

Keywords:high-speed equalizer? SATA? active copper cables? board interconnect?


Texas Instruments Inc. has introduced the TLK1101E, a flexible high-speed equalizer to extend the reach of PCB signal channels, such as backplanes or active copper cables.

With multirate operation up to 11.3Gbit/s, the TLK1101E equalizer supports all 10G/8G interface standards. The device's two-wire serial interface, pin control and PC-based GUI enable quick prototyping, which reduces the development cycle for high-performance computers, storage subsystems, telecommunications equipment and automatic test equipment (ATE).

The TLK1101E equalizer provides 30dB of loss compensation to support up to 20m of 24AWG cable or up to 40-inches of FR-4 PCB trace at data transmission rates up to 11.3Gbit/s, with 0.13 unit intervals of deterministic jitter at the equalizer output. The device also provides up to 7dB transmitter de-emphasis to further compensate for loss of up to 12-inches of FR-4 board interconnect.

The TLK1101E is highly programmable and allows one single device to be configured for optimum performance under various data rates and various channel lengths. The output differential voltage swing can be set to 300mVp-p, 600mVp-p, or 900 mVp-p. The interconnect length can be set from 0-20m of 24AWG twinaxial cable. The input threshold voltage and the loss of signal assert level can also be adjusted. Those settings can be made either through control pins or the two-wire serial control interface. The low-frequency cut-off is low enough to support low-frequency control signals such as SAS and Serial ATA out-of-band signals.

Pricing starts at $12.35 in 100-unit quantities. The device is now avaialble in a 20-pin QFN package.

- Ismini Scouras

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