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UG123: SiOCXO1-EVB Evaluation Board
User's Guide

The Silicon Labs SiOCXO1-EVB (kit) is used to help evaluate Silicon Labs Jitter
Attenuator and Network Synchronization products for Stratum 3/3E, IEEE 1588 and
G.8262 SyncE applications.

EVB FEATURES:

• Flexible Output Termination
• Power Supply Filtering
• Optional Output Buffer
• Optional OCXO Voltage Control Adjust

Figure .1. SiOCXO1-EB

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com

Rev. 1.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • July 26, 2021

Summary of Contents for SiOCXO1-EVB

Page 1: ...and G 8262 SyncE applications EVB FEATURES Flexible Output Termination Power Supply Filtering Optional Output Buffer Optional OCXO Voltage Control Adjust Figure 1 SiOCXO1 EB Skyworks Solutions Inc Phone 781 376 3000 Fax 781 376 3100 sales skyworksinc com www skyworksinc com 1 Rev 1 1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 26 2021...

Page 2: ...rrent could be on the order of 1 amp Check the manufacturers warm up time 2 Connect SiOCXO1 EB output J2 to the Si5348 REF clock input using the short SMA cable provided with the EVB kit UG123 SiOCXO1 EVB Evaluation Board User s Guide Quick Start Skyworks Solutions Inc Phone 781 376 3000 Fax 781 376 3100 sales skyworksinc com www skyworksinc com 2 Rev 1 1 Skyworks Proprietary Information Products ...

Page 3: ...valuation Board User s Guide Top Layer View of Board Skyworks Solutions Inc Phone 781 376 3000 Fax 781 376 3100 sales skyworksinc com www skyworksinc com 3 Rev 1 1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 26 2021 3 ...

Page 4: ...age size such as the Rakon P N STP3158 12 8 MHz pictured below See Section 6 Schematic 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 O...

Page 5: ... Some OCXO s have an optional control voltage to adjust the output frequency usually by a small amount such as 1 or 2 ppm One example would be to discipline the OCXO to reduce the effects of OCXO aging In this case J3 and R4 must be populated as a minimum C6 can be used for filtering or BW frequency limiting Alternatively R5 and C6 could be fixed or adjustable resistors to set a DC bias voltage UG...

Page 6: ... recommended to use a UPS Power Supply back up for long term testing UG123 SiOCXO1 EVB Evaluation Board User s Guide Configuring the SiOCXO EB Skyworks Solutions Inc Phone 781 376 3000 Fax 781 376 3100 sales skyworksinc com www skyworksinc com 6 Rev 1 1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 26 2021 6 ...

Page 7: ...by 0 02 0 04A warm up time Around the minute mark the current decreased rapidly to 0 32 0 37A Then the system decreased slightly to its consistent steady state current of 0 30 A within 20 minutes 2 The LED draws around 10 mA so subtract this from the power supply system current to get the current draw of the OCXO alone These are the values reflected in the table above Steady State Output Waveform ...

Page 8: ...aluation Board User s Guide Schematic Skyworks Solutions Inc Phone 781 376 3000 Fax 781 376 3100 sales skyworksinc com www skyworksinc com 8 Rev 1 1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 26 2021 8 ...

Page 9: ...it ch 10 1 J2 SMA_ED GE Johnson 142 070 1 801 J502 ND SMA_EDGE_p 062 12 2 J4 J5 Jmpr_1pin 1pin_p1pitch 13 1 L1 Ferrite Steward HI1612X 560R 10 1612 14 1 R1 37 4 Venkel CR0603 16W 37 R4FT 603 15 1 R2 0 ohm Venkel CR0603 16W 00 0T 603 18 1 R6 150 Venkel CR0603 16W 15 00FT 603 21 1 U1 12 8 MHz Rakon STP315 8 Alternate Connor Winfield OH300 50503CF 0 12 8M or AVX OO12 8000000M1 4070AT 5 1 C6 1UF Venke...

Page 10: ...R10 0 ohm Venkel CR0603 16W 00 0T NO POP 603 20 1 R9 37 4 Venkel CR0603 16W 37 R4FT NO POP 603 22 1 U2 NC7SV34 Fairchild NC7SV3 4P5X NO POP NC7SV34P5X ND SC 70 5 Alternate Fairchild NC7SZ126M5X Note The OCXO must be populated if it is not UG123 SiOCXO1 EVB Evaluation Board User s Guide Bill of Materials Skyworks Solutions Inc Phone 781 376 3000 Fax 781 376 3100 sales skyworksinc com www skyworksin...

Page 11: ...OCXO1 EVB Evaluation Board User s Guide Layout Skyworks Solutions Inc Phone 781 376 3000 Fax 781 376 3100 sales skyworksinc com www skyworksinc com 11 Rev 1 1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 26 2021 11 ...

Page 12: ...1 EVB Evaluation Board User s Guide Layout Skyworks Solutions Inc Phone 781 376 3000 Fax 781 376 3100 sales skyworksinc com www skyworksinc com 12 Rev 1 1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 26 2021 12 ...

Page 13: ...RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE Skyworks products are not intended for use in medical lifesaving or life sustaining applications or other equipment in which the failure of the Skyworks products could lead to personal injury death physical or environmental damage Skyworks customers using or selling Skyworks products for use in such applications do so at the...

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