3. Functional Description
The SiOCXO1-EB is used in conjunction with Silicon Labs precision timing devices to facilitate characterization. The SiOCXO1-EB was
designed to maximize output termination configurations as well as optional control voltage terminations. Resistors and capacitors are
0603, which makes it simple to remove and add various values. The SiOCXO1-EB bill of materials and PCB layouts are in Section
. The block diagram for the board is provided below:
Figure 3.1. Functional Block Diagram
The SiOCXO1-EB is intended to be a general use board for a 7-pin OCXO with 22x25 nominal package size, such as the Rakon P/N
STP3158 12.8 MHz pictured below. See Section
for example measurements carried out using this OCXO.
Figure 3.2. SiOCXO1-EB Shown Populated with an OCXO
3.1 Power Supply
The power supply voltage and current requirements are listed in the manufacturers data sheet. A 3.3 V ±5% supply is required. R6 may
require modification if other voltages are used. Also, note the OCXO initial current can be on the order of 1A. Power supply filtering has
been added to the evaluation board to minimize spurious response.
UG123: SiOCXO1-EVB Evaluation Board User's Guide • Functional Description
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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Rev. 1.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • July 26, 2021
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