Programmable universal frequency translator from IDT

The IDT 8T49N28x UFT family of timing devices offers eight independently-programmable clocking outputs with the flexibility to apply virtually any input frequency and select virtually any output frequency. The devices’ high level of integration and low jitter eliminates the need for separate frequency translation, redundancy management, and jitter attenuation devices – empowering system designers to save cost and board area by consolidating those functions into a single device. In addition, the devices offer significant flexibility in configuration and ease-of-programmability with IDT’s Timing Commander software, making it useful in a variety of sockets and modes of operation with minimal design effort.

Christian Kermarrec, vice president and general manager of the Timing and Synchronization Division at IDT, comments: “Our latest generation of UFT devices demonstrates IDT’s leadership in providing flexible and powerful timing solutions that are easy to use. 100 GbE applications require robust timing devices to ensure reliable system operation with low bit error rates. With RMS phase jitter of only 300 femtoseconds, IDT’s UFT family not only meets the technical requirements as a compact single-chip solution, but offers a multitude of additional benefits in flexibility and programmability that make it far superior to fixed-frequency discrete solutions.”

The IDT 8T49N28x devices are available with one or two PLLs in a single package, depending on the needs of the application. When configured as a frequency synthesizer, the device can utilize a low-cost, readily-available 10 MHz to 40 MHz crystal to produce any frequency from 8 kHz to 1.0 GHz, regardless of the crystal frequency used. In a frequency translator configuration, the devices accept up to four input reference clocks per PLL from 8 kHz to 875 MHz, switching between them as necessary to generate any output frequency from 8 kHz to 1.0 GHz. Each output is individually programmable as LVPECL, LVDS, or as a pair of LVCMOS signals.

Fully supported by IDT’s Timing Commander GUI, the 8T49N28x family can be easily programmed to meet the system’s requirements without sifting through register tables in the datasheet. Additional GUI-based controls, calculations, and status monitors allow the user to experiment with and fine-tune the configuration. IDT’s Timing Commander software and 8T49N28x product configuration files can be downloaded online at www.idt.com/go/TimingCommander.

Availability

The IDT 8T49N281i, 8T49N282i and 8T49N283i are currently sampling to qualified customers. The 8T49N281i and 8T49N 283i are available in a 56-lead 8 x 8 mm VFQFPN package, and the 8T49N282i is available in a 72-lead 10 x 10 mm VFQFPN package.