IDT8N4DV85 Datasheet, PDF (1/18 Pages) Integrated Device Technology – Fourth generation FemtoClock

LVDS Dual-Frequency Programmable VCXO IDT8N4DV85
DATASHEET
General Description
The IDT8N4DV85 is a LVDS 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 1300 MHz
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.
Features
• Fourth generation FemtoClock® NG technology
• Programmable clock output frequency from 15.476MHz to
866.67MHz and from 975MHz to 1300MHz
• Two factory-programmed output frequencies
• Frequency programming resolution is 218Hz and better
• Absolute pull range (APR) programmable from ±4.5 to ±754.5ppm
• One 2.5V or 3.3V LVDS clock output
• Output enable control input, LVCMOS/LVTTL compatible
• RMS phase jitter @ 156.25MHz (12kHz - 20MHz): 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
Block Diagram
OSC ^÷P
114.285 MHz
PFD
&
LPF
FemtoClock® NG
VCO
÷N
1950-2600MHz
2
÷MINT, MFRAC
VC
FSEL
Pulldown
A/D
9
23
7
Configuration Register (ROM)
(Frequency, Pull range, Polarity)
Pin Assignment
Q
nQ
VC 1
6 V_CC
FSEL 2
5 nQ
GND 3
4Q
IDT8N4DV85
6-lead ceramic 5mm x 7mm x 1.55mm
package body
CD Package
Top View
IDT8N4DV85CCD REVISION B NOVEMBER 20, 2013
1
©2013 Integrated Device Technology, Inc.