General Description

The IDT8N3DV85 is a LVPECL Dual-Frequency Programmable

VCXO with very flexible frequency and pull-range programming

capabilities. The device uses IDT’s fourth generation FemtoClock?

NG technology for an optimum of high clock frequency and low

phase noise performance. The device accepts 2.5V or 3.3V supply

and is packaged in a small, lead-free (RoHS 6) 6-lead ceramic 5mm

x 7mm x 1.55mm package.

The device can be factory-programmed to any two frequencies in the

range of 15.476MHz to 866.67MHz and from 975MHz to 1,300MHz

to the very high degree of frequency precision of 218Hz or better.

The output frequency is selected by the FSEL pin. The extended

temperature range supports wireless infrastructure, telecommunication and networking end equipment requirements.

特性 Features

? Fourth Generation FemtoClock? NG technology

? Programmable clock output frequency from 15.476MHz to

866.67MHz and from 975MHz to 1,300MHz

? Two factory-programmed output frequencies

? VCO frequency programming resolution is 218Hz and better

? Factory-programmable VCXO pull range and control voltage

polarity

? VCXO pull range programmable from typical ±12.5 to ±787.5ppm

? One 2.5V or 3.3V LVPECL clock output

? FSEL control input for frequency selection, LVCMOS/LVTTL

compatible

? RMS phase jitter @ 622.08MHz (12kHz - 20MHz):0.46ps (typical)

? RMS phase jitter @ 622.08MHz (50kHz - 80MHz): 0.47ps (typical)

? 2.5V or 3.3V supply voltage

? -40°C to 85°C ambient operating temperature

? Lead-free (RoHS 6) 6-lead ceramic 5mm x 7mm x 1.55mm

package