UG372: Si5372 Evaluation Board User’s
Guide
The Si5372-EVB is used for evaluating the Si5372 Any-Frequency, Any-Output, Jitter
Attenuating Clock Multiplier. The Si5372 combines 4
th
generation DSPLL and Multi-
synth
™
technologies to enable any-frequency clock generation for applications that re-
quire the highest level of jitter performance. There are two different EVBs for the
Si5372. There is an A grade which uses an external XTAL reference and there is a J
grade which has an internal XTAL reference. This user guide is intended for all ver-
sions of the Si5372 EVB. The device grade and revision is distinguished by a white 1
inch x 0.187 inch label installed in the lower left hand corner of the board. In the exam-
ple below, the label "SI5372J-A-EB" indicates the evaluation board has been assem-
bled with an Si5372 device, Grade J, Revision A, installed. (For ordering purposes on-
ly, the terms “EB” and “EVB” refer to the board and the kit respectively. For the purpose
of this document, the terms are synonymous in context.)The device The Si5372-EVB
has two independent input clocks and four independent output clocks. The Si5372-EVB
can be controlled and configured using the ClockBuilderPro
™
(CBPro) software tool.
EVB FEATURES:
• Si5372A-A-EB for evaluating external
XTAL version Si5372A
• Onboard 48 MHz XTAL or Reference
SMA Inputs allow holdover mode of
operation on the Si5372.
• Si5372J-A-EB for evaluating internal XTAL
version Si5372J
• Powered from USB port or external power
supply.
• CBPro
™
GUI-programmable VDD supply
allows the device to operate from 3.3, 2.5,
or 1.8 V.
• CBPro GUI-programmable VDDO supplies
allow each of the ten outputs to have its
own supply voltage, selectable from 3.3,
2.5, or 1.8 V.
• CBPro GUI-controlled voltage, current,
and power measurements of VDD and all
VDDO supplies.
• Status LEDs for power supplies and
control/status signals of Si5372.
• SMA connectors for input clocks, output
clocks, and optional external timing
reference clock.
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