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SiT6081EB Evaluation Board User Manual
Contents
1 Introduction ............................................................................................................................................. 1
2 I/O Descriptions ....................................................................................................................................... 2
3 EVB Usage Descriptions ........................................................................................................................... 3
3.1 EVB Configurations........................................................................................................................ 3
3.2 Waveform Capturing Using Active Probe ..................................................................................... 3
3.3 Measuring Jitter and Phase Noise ................................................................................................. 4
3.4 Current Measurement .................................................................................................................. 4
Appendix A .................................................................................................................................................... 5
1
Introduction
The SiT6081EB evaluation board (EVB) is designed for use with SiTime's XO in the 4-pin, 2.5 x 2.0 mm
packages and LVCMOS output type.
The SiT6081EB supports the following products:
Base Part Number
SiT1602
SiT8008
SiT8009
SiT8918
SiT1602
SiT8920
SiT8921
SiT8924
SiT8925
SiT8944
SiT8945
SiT8208
SiT8209
SiT1618
SiT1625
SiT3807
SiT3808
SiT6081EB User Manual | Rev 3.01
Type
XO
XO
XO
Automotive & High Temp XO
Automotive & High Temp XO
Automotive & High Temp XO
Automotive & High Temp XO
Automotive & High Temp XO
Automotive & High Temp XO
Endura Automotive &
High Temp XO
Endura Automotive &
High Temp XO
XO
XO
XO
XO
VCXO
VCXO
Page 1 of 8
Output frequency
3.57 MHz - 77.76 MHz
1 MHz - 110 MHz
115 MHz - 137 MHz
1 MHz - 110 MHz
115 MHz - 137 MHz
1 MHz - 110 MHz
115 MHz - 137 MHz
1 MHz - 110 MHz
115 MHz - 137 MHz
1 MHz - 110 MHz
115 MHz - 137 MHz
1 MHz - 80 MHz
80 MHz - 220 MHz
7.3728 MHz - 48 MHz
4 MHz - 125 MHz
1.544 - 49.152 MHz
1 MHz - 80 MHz
Package
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
2.5 x 2.0 QFN
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Table of Contents
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Summary of Contents for SiTime SiT6081EB
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Page 1: Table Of Contents
3.4 Current Measurement ........................4 Appendix A ..............................5 Introduction The SiT6081EB evaluation board (EVB) is designed for use with SiTime’s XO in the 4-pin, 2.5 x 2.0 mm packages and LVCMOS output type. The SiT6081EB supports the following products:... -
Page 2: O Descriptions
SMA output for direct connection to measurement equipment Probing points for accurate waveform measurement SiTime typically ships the EVB with the XO/SSXO/TCXO mounted using SiTime recommended reflow profile. The device should only be evaluated in its original soldered down state for best signal integrity and frequency stability. -
Page 3: Evb Usage Descriptions
Figure A1 Appendix Waveform Capturing Using Active Probe SiTime XO/TCXO is a high-speed logic output device. It is critical that the proper logic and high frequency measurement techniques are used along with the high-quality active probe to ensure best measurement results. -
Page 4: Measuring Jitter And Phase Noise
For waveform measurement, it's recommended to remove resistor R7. Please refer to Figure A2 for test point locations on the SiT6081EB. If the soldering probe is used, it is recommended to use C7 capacitor pads or solder it over it if necessary (Figure 1). - Page 5 SiT6081EB Evaluation Board User Manual Appendix A 10uH 10uF Sense 0.1uF 0.01uF 0.1uF PIN1 J1 SMA edge mount PIN1 Pin1 NL R7 0.1uF SiTime_4pin PIN1 SMA edge mount Figure A1: SiT6081EB electrical schematics Page 5 of 8 www.sitime.com...
- Page 6 Digi-Key Digi-Key part number for part number for Connectors part number mating connector associated products WM2011-ND Current measurement WM2744-ND WM1114TR-ND Power Supply A30787-ND A31018-ND Pin 1 access A30787-ND A31018-ND SiT6081EB User Manual | Rev 3.01 Page 6 of 8 www.sitime.com...
- Page 7 SiT6081EB Evaluation Board User Manual Probe test points Signal VDD sense Figure A2: SiT6081EB layout SiT6081EB User Manual | Rev 3.01 Page 7 of 8 www.sitime.com...
- Page 8 © SiTime Corporation, January 2024. The information contained herein is subject to change at any time without notice. SiTime assumes no responsibility or liabi lity for any loss, damage or defect of a Product which is caused in whole or in part by (i) use of any circuitry other than circuitry embodied in a SiTime product, (ii) misuse or abuse including static discharge, neglect or accident, (iii) unauthorized modification or repairs which have been soldered or altered during assembly and are not capable of being tested by SiTime under its normal test conditions, or (iv) improper installation, storage, handling, warehousing or transportation, or (v) being subjected to unusual physical, thermal, or electrical stress.
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