The IDT83PN15639I is a programmable LVPECL synthesizer that is "forward" footprint compatible with standard 5mm x 7mm oscillators. The device uses IDT 's fourth generation FemtoClock® NG technology for an optimum of high clock frequency and low phase noise performance. Forward footprint compatibility means that a board 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 4th Generation FemtoClock® NG PLL technology, which delivers sub 0.2ps rms phase jitter. The IDT83PN15639I defaults to 156.25MHz using a 25MHz crystal but can also be set to one of four different frequency multiplier settings to support a wide variety of applications. The table below shows some of the more common application settings.
| Integrated Device Technology | |
|---|---|
| Product Category | IC Phase-locked Loops (PLL) |
| Product Number | 83PN15639ANRGI |
| Product Name | Programmable FemtoClock NG 3.3V,2.5V LVPECL Oscillator Replacement |
| Bus Interface | LVPECL; LVPECL |
| Package Type | Surface Mount; VFQFPN |
| Supply Voltage | 2.5 to 3.3 volts |
