Description
The 83PR226I-01 is a programmable LVPECL synthesizer that is
“forward” footprint compatible with standard 5mm x 7mm oscillators.
Forward footprint compatibility means, a board is designed to
accommodate the crystal oscillator interface, and the optional
control pins are also fully compatible with a canned oscillator
footprint (the canned oscillator will drop onto the 10-VFQFN footprint
for second sourcing purposes). This capability provides designers
with programability and lead time advantages of silicon/crystal based
solutions, while maintaining compatibility with industry standard
5mm x 7mm oscillator footprints for ease of supply chain
management. Oscillator-level performance is maintained with IDT’s
3rd generation FemtoClock® PLL technology, which delivers sub 1ps
RMS phase jitter.
The 83PR226I-01 defaults to 125MHz using a 25MHz crystal with all
4 of the programming pins floating (pulled HIGH with internal pullup
resistors), but can be also be set to 15 different frequency multiplier
settings to support a wide variety of applications. The table below
shows some of the more common application settings.

Features
• Footprint compatible with 5mm x 7mm differential oscillators
• One differential LVPECL output pair
• Crystal oscillator interface which can also be overdriven a
single-ended or differential reference clock
• Output frequency range: 83.33MHz – 213.33MHz
• Crystal/Input frequency range: 15.625MHz – 32MHz
• VCO range: 500MHz – 640MHz
• PCI Express (2.5Gb/s) and Gen 2 (5 Gb/s) jitter compliant
• Cycle-to-cycle jitter: 45ps (maximum)
• RMS phase jitter @ 125MHz, 1.875MHz – 20MHz:
0.47ps (typical)
• Full 3.3V or 2.5V operating supply
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) packages