83PN15639I中文资料Programmable FemtoClock® NG 3.3V,2.5V LVPECL Oscillator Replacement数据手册Renesas规格书

描述 Description

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.

特性 Features

Fourth Generation FemtoClock® NG technology
Footprint compatible with 5mm x 7mm differential oscillators
One differential LVPECL output pair
Crystal oscillator interface which can also be overdriven using a single-ended reference clock
Output frequency: 156.25MHz
Crystal/input frequency: 25MHz, 12pF parallel resonant crystal
VCO range: 2GHz – 2.5GHz
RMS phase jitter @ 156.25MHz, 10kHz – 1MHz: 0.187ps (typical)
Full 3.3V or 2.5V operating supply
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) package