Inphi single-chip differential encoder targets Duobinary, DPSK, NRZ, RZ formats

Inphi Corporation announced its 13750DE/13751DE Differential Encoder, the first commercially available, single-chip solution to deliver up to 12.5Gbps Differential Phase Shift Keying (DPSK) or Duobinary transmission. Targeting telecommunications systems and transponders, the differential encoder enhances signal integrityDesigned to meet the complex demands of telecommunications systems and transponders, the 13750DE/13751DE is qualified and is in compliance with JESD 47 as well as Telcordia GR-357-Core.

In combination with Inphi’s 13700DF/13701DF and 13706RZ/13707RZ, the 13750DE/13751DE can be assembled on a single system to accomplish NRZ, RZ, Duobinary or DPSK transmission formats. This gives customers the flexibility of designing one board, interchanging parts as needed to vary the transmission format.

“The Differential Encoder is a critical step in designing parts flexible enough to meet the complex and continually changing needs of the telecommunications marketplace,” said Kevin Nary, vice president of engineering for Inphi Corporation. “We hear directly from our customers that Inphi’s differential encoders are an example of Inphi's commitment to setting industry standards in integrated circuit performance.”

Features include the ability to incorporate DPSK / Duobinary with the industry's smallest footprint solution. Its 3.3V+/- supply chip enables reliable interfacing to a variety of logic levels. The 13750DE/13751DE can be used from 1 Gbps to 12.5Gbps with extremely low jitter, ensuring flexibility in design and application. Customers have the option of using either single-ended or differential inputs for the clock and data.

The Differential Encoder’s large output swing, at 1.1V, enables it to interface to a variety of drivers. Fast rise and fall times produce a cleaner and wide-open eye with better signal integrity.

Inphi's Differential Encoder parts are available immediately. Pricing is expected to be $145.00 per part in quantities of 1,000. Volume discounts are available.

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