特性
- 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
描述
The 83PR226I-01 is a programmable LVPECL synthesizer that is "forward" footprint compatible with standard 5mm x 7mm oscillators. Forward footprint compatibility means that a board designed to accommodate the crystal oscillator interface and the optional control pins is 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 Renesas' 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 below table shows some of the more common application settings.
