Application Notes - General

Disciplined OCXOs

This application note introduces our range of advanced clock modules which provide electrical timing functionality for distributed network systems. These units primarily revolve around the 1PPS (pulse per second) timing synchronisation signal produced by a GPS receiver which is derived from transmitted timing information received from GPS satellite systems ......


Jitter and Phase Noise

An introduction to noise and jitter. A measurement of the performance of a frequency system is its stability, i.e. the level of fluctuations in frequency over a suitable measurement. The goal is to keep these fluctuations to a minimum; however noise and jitter are unavoidable within a system and can negatively affect the performance ......


Jitter from Phase Noise Calculation

This excel spreadsheet contains the formulas to perform a quick calculation of RMS Phase Jitter from a phase noise data set.


Quartz Based Frequency Products Shelf Life

The purpose of this brief is to detail what can happen to a quartz based timing device while stored on the shelf and when this could cause a problem. Any products that are MSL Level 2-6 (JDEC-STD-020) rated are stored in packaging that conforms to JDEC-STD-033 ensuring that levels of moisture and hence corrosion are further reduced ......


Quartz Crystal Ageing

Ageing of a quartz crystal results in a small change of frequency overtime and this effect may have to be taken into account by the customer when designing their circuit depending upon the overall specification that needs to be achieved. There are two main causes of ageing in quartz crystals, one due to mass-transfer and the other due to stress ......


Quartz Crystal Handling Precautions

A quartz crystal unit includes a small strip or disk of quartz that is processed to an exact size and thickness dependent on the customer specified resonating frequency. The quartz is plated with conducting electrodes and mounted in a hermetically sealed protective enclosure ......


Quartz Crystal Resonators

The importance of quartz crystal resonators in electronics results from their extremely high Q, relatively small size and excellent temperature stability. A quartz crystal resonator uses the piezoelectric properties of quartz. The direct piezoelectric effect refers to the electric polarisation of certain materials brought about by the application of mechanical stress ......


Tape & Reel Details

Here you can find information about IQD Tape and Reel information and Statek Tape and Reel packaging information. All dimensions are based on international standard EIA-481-D ......


Tape Splicing

IQD have recently begun offering a tape splicing service. This means that the tape used to hold components can be joined. It can be done either to add components to a reel, or to create smaller reel sizes by adding the leader and follower to the tape ......


Timekeeping with Quartz Crystals

Since its introduction the 32.768kHz miniature watch crystal has become the most popular time keeping reference ever. This application note is intended to give some guidance as to the use of quartz crystals in time keeping applications ......


Ultrasonic Cleaning of PCB’s with Quartz Based Products

A discussion about the effects of ultrasonic cleaning on quartz crystal products and recommendations as to mitigate said effects ……