Application Notes

Application Notes PDF Download

DTQ-100 Application Note: Achieving Atomic-Level Timing Without GPS

In mission-critical environments such as ocean bottom nodes, underwater networks, and remote sensor systems, maintaining accurate time without GPS is vital.
Taitien’s DTQ-100 Disciplined Oscillator Series delivers exceptional holdover stability — ±1 ms for up to 130 days — through intelligent disciplining and calibration algorithms.
This application note explains the warm-up behavior, 1 PPS accuracy requirements, and calibration process that ensure long-term reliability even after power interruptions.

User’s Guide

The Taitien DTQ-100 ultra-low power disciplined oscillator is designed for battery-powered timekeeping applications. Featuring a dual-oven structure and consuming only 65mW, it ensures exceptional stability. The 1PPS (pulse per second) input/output enables synchronization with 1ns accuracy, while built-in phase measurement ensures stability. The DTQ-100’s patented thermal control predicts and corrects time drift, ideal for demanding environments such as ocean bottom nodes, mining, and oil exploration. This guide provides installation, testing, and operation instructions and includes a professional development kit to help users master DTQ-100’s operation and testing.

Ultra Low Jitter Crystal Oscillators for High Speed Optical Modules

Rapid adoption of 5G technology and IoT devices which drive the demand of high data rate optical modules, especially from data center for inter and intra communication purpose. Increase the optical module data rate from current 100Gbps to 400Gbps/800Gbps is an efficient way to upgrade the network infrastructure, where PAM4 signal modulation and coherent technology are the key for the new high data rate optical module design. …more

Application Guidelines for crystal oscillators

How to use quartz oscillator correctly? What are some issues to be aware of when using the product?

PECL and LVDS

PECL stands for “Positive Emitter Coupled Logic”. PECL are differential logic outputs commonly used in high-speed clock distribution circuits. Low Voltage PECL (LVPECL) denotes PECL circuits designed for use with 3.3V or 2.5V supply, the same supply voltage as for low voltage CMOS devices….

Side Pads on Crystal Oscillators

Side pads are metal pads on the side of crystal oscillator packages. Pads are generally on the short side of the package. Side pads are used to measure electrical characteristics of crystal blanks after assembly in order to further assure quality of the blanks before shipment….

Utilize Clipped Sine Waveform in Circuit Design

Clipped sine waveform is the most popular output option for TCXOs. Low power consumption for improved thermal characteristics :Better aging and frequency stability performance. Better phase noise performance than CMOS output….more

Tri-State Function in Crystal Oscillators

In oscillator with Tri-state function, oscillator output can be controlled by the Tri-state pin as follows: Logic High : Output Enable ; Logic Low : Output Disable. The Tri-state function would allow output pin to assume high-impedance state, effectively removing the oscillator output from the circuit. Oscillator circuits can remain on or be turned off while output is disabled in Tri-State….more

Inverted MESA Blank

Oscillator frequency is inversely proportional to the thickness of the crystal blank. The higher the frequency, the thinner the crystal blanks. Inverted Mesa technology creates a region on the crystal blank much thinner than polished blanks for resonating. Thicker crystal material surrounding the “well” provides robust structural support for better reliability. Inverted Mesa blanks can be used in crystals, crystal oscillators and VCXOs for high fundamental frequency applications. …more

How to Minimize EMI effect on Crystal Oscillators

For TATIEN crystal oscillators, top metal covers are electrically connected to GND terminals. The metal covers provide effective shielding against EMI from ASIC inside the oscillator. …more