Application Notes
Application Notes are articles and technical notes that provide extra information about NEL oscillator products. These notes should assist the designer in usage of these products.
| Title | Description | File Name |
| Crystal Oscillator Based Clean-Up Modules | NEL Frequency Controls offers a family of clean-up Modules from very compact VCXO-based SMD units, to TCVCXO based units with good holdover performance, to Ultra Low Phase Noise (ULPN) OCVCXO based metal can modules and rack mountable appliances. | Cleanup Whitepaper |
| Acceleration Sensitivity of Crystal Oscillators | Acceleration sensitivity, also known as "g sensitivity", is a crystal oscillator's sensitivity to external forces applied in any direction. The sensitivity is influenced by the resonator's mounting structure, orientation, material properties, and isolation. Applications like aircraft, communications, GPS, and metrology all require oscillators with low acceleration sensitivity. To test the sensitivity, NEL applies a random vibration testing method. | Crystal Oscillators |
| Distinguishing Between APR and Pullability When Specifying a VCXO | Describes the differences between APR and Pullability specifications in a VCXO | 1314a.pdf |
| Testing Phase Noise of Ultra Low Phase Noise OCXO | Challenges and solutions for modern instrumentation equipment, commercial & defense communication systems, and radar equipment | PID2382573_E.pdf |
| Jitter comparison of various crystal technologies | Three technologies selected for comparison | 0603a.pdf |
| Pb-Free Assembly Reflow Profile-Osc | Table and charts for Pb-Free Assembly Reflow | 0501b.pdf |
| Pb-Free SMD Xtal Assembly Reflow Profile | Pb-Free SMD Xtal Assembly Reflow Profile Chart | 0502a.pdf |
| SMD Xtal Reflow Profile | SMD Xtal Reflow Profile Chart | 0501a.pdf |
| 4-Gbit Fibre Channel Frequency Control Design | Design Packet filled with specs, charts White Paper, "Low Jitter, Low Emission Timing Solutions for High Speed Digital Systems" | 4gbit.pdf |
| Redundant Clock Module | Design Packet filled with specs and White Paper, "Monitor, Detect, Action" | NEL-RCM_package.pdf |
| 3.0 Volt TTL | TTL oscillators running on 3.0Vdc input. CMOS versus TTL running at 3.0Vdc is discussed | 9734a.pdf |
| DEC "Alpha" Microprocessor | NEL's HK-2900 crystal clock oscillator provides a low cost frequency source for Digital Equipment Corporation's Alpha microprocessor. | 9337a.pdf |
| ECL Usage | ECL oscillator applications note that discusses frequencies, loading, trace widths as they apply to the usage of ECL output devices. | 9339a.pdf |
| Intel Pentium | Specifications required for the oscillator that drives the Intel Pentium microprocessor IC. | 9320a.pdf |
| Tri-State Inputs | Enable/Disable - Threestate Control Input Iil & Iih Ap-Note. Requirements and definitions of threestate controls. | 9342a.pdf |
| Thermal Analysis | Thermal Analysis of the SJ-XXX SMD package. Thermal measurements were made on an SJ-100 oscillator. IC size was 0.050" X 0.050". Areas measured were the top of the substrate, bottom of the package, and the IC. | 9738a.pdf |
| Oscillator Tutorial | Tutorial for crystals and oscillators. Theories of crystal operations and fundamental oscillator design is addressed. Tutorial also discusses package considerations and design limitations. | 9113.pdf |
| Complementary Output ECL (PECL) | Application Note for Complimentary (Differential) Output ECL (PECL) With Enable/Disable Feature | 9944a.pdf |