Product category:
Analogue and Mixed Signal ICs
News Release from: National Semiconductor | Subject: DS64EV400
Edited by the Electronicstalk Editorial
Team on 24 October 2007
Signal-conditioning equalisers for the
long run
A new programmable quad equaliser extends the reach of high-speed serial buses up to 10Gbit/s data transmission rates, while consuming only 94mW per channel.
A new programmable quad equaliser extends the reach of high-speed serial buses up to 10Gbit/s data transmission rates, while consuming only 94mW per channel The DS64EV400, from National's PowerWise energy-efficient product family, provides high-speed signal transmission over backplanes and cables used in storage area networking (SAN), communications infrastructure and automated test equipment (ATE)
This article was originally published on Electronicstalk on 5 Jan 2001 at 8.00am (UK)
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The DS64EV400 compensates for transmission medium losses and reduces deterministic jitter for four data transmission channels.
The device provides 20dB of boost to equalise up to 10m of Cat5 cable, up to 40in of FR-4 printed circuit board (PCB) at data transmission rates up to 6.4Gbit/s and up to 30in of FR-4 at datarates up to 10Gbit/s - with only 0.175 units interval (UI) of residual jitter at the equaliser output.
National fabricates this signal-conditioning part on its proprietary silicon-germanium (SiGe) BiCMOS-8 process technology, which provides high performance-to-power ratios for high-speed interface devices.
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Along with featuring the lowest power at this performance level, inactive channels can be automatically shutdown for further power savings of 85% per channel.
The quad equaliser's features make it easy to use with field-programmable gate arrays (FPGAs) and transmission media.
Each equaliser channel has eight equalisation levels simultaneously set by three control pins, or individually programmed through a serial System Management (SM) bus.
The DS64EV400 supports both AC and DC-coupled data paths for long-run-length PRBS-31 data patterns and balanced 8b/10b codes.
It uses differential current-mode logic (CML) inputs and outputs, and features 8 V of electrostatic discharge (ESD) protection.
Additionally, the equaliser includes a loss-of-signal (LOS) detect for each channel, operates over the full -40 to +85C temperature range and is powered from either a 2.5 or 3.3V supply.
National is also introducing the DS32EV400, a programmable quad equaliser optimised for applications up to 3.2Gbit/s that includes many of the same features as the DS64EV400.
These devices are the latest additions to National's growing family of signal-conditioning equalisers, which include the DS38EP100 and DS80EP100 power-saver equalisers, DS16EV5110 video cable equaliser, DS25BR110 LVDS equaliser, DS40MB200 dual mux-buffer, and DS15BA101 and DS15EA101 cable extender chipset.
The DS64EV400 (6.4 to 10Gbit/s) and DS32EV400 (1 to 3.2Gbit/s) are available now in 7 x 7mm 48-pin leadless LLP packages and are priced at US $16 and $13, respectively, both in 1000-unit quantities.
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