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PL560-08 Datasheet, PDF (5/15 Pages) PhaseLink Corporation – Analog Frequency Multiplier | |||
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Analog Frequency Multiplier
VCXO Family of Products
VOLTAGE CONTROL SPECIFICATION
PARAMETERS
VCXO Stabilization Time
VCXO Tuning Range
CLK output pullability
Linearity
VCON input impedance
VCON modulation BW
SYMBOL
CONDITIONS
MIN.
TVCXOSTB From power valid
XTAL C0 /C1 <300
200
VCON= 1.65V ± 1.65V
±100
XTAL C0 /C1 <300
130
0V < VCON < 3.3V, -3dB
25
TYP.
±120
5
MAX.
10
10
UNITS
ms
ppm
ppm
%
kâ¦
kHz
EXTERNAL COMPONENT VALUES
INDUCTOR VALUE OPTIMIZATION
The required inductor value(s) for the best performance depends on the operating frequency, and the board
layout specifications. The listed values in this datasheet are based on the calculated parasitic values from
PhaseLinkâs evaluation board design (Gerber file available upon request). These inductor values provide the user
with a starting point to determine the optimum inductor values. Additional fine-tuning may be required to
determine the optimal solution.
To assist with the inductor value optimization, PhaseLink has developed the âAFM Tuning Assistantâ software.
You can download this software from PhaseLinkâs web site (www.phaselink.com). The software consists of two
worksheets. The first worksheet (named L2) is used to fine-tune the âL2â inductor value, and the second
worksheet (named L4) is used for fine tuning of the âL4â (used in 4x AFMs only) inductor value.
For those designs using PhaseLinkâs recommended board layout, you can use the âAFM Tuning Assistantâ to
determine the optimum values for the required inductors. This software is developed based on the parasitic
information from PhaseLinkâs board layout and can be used to determine the required inductor and parallel
capacitor (see LWB1 and Cstray parameters) values. For those employing a different board layout in their
design, we recommend to use the parasitic information of their board layout to calculate the optimized inductor
values. Please use the following fine tuning procedure:
47745 Fremont Blvd., Fremont, CA 94538 TEL (510) 492-0990, FAX (510) 492-0991 www.phaselink.com Rev.:03-22-05 Page 5
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