TCXO temperature compensated crystal oscillator: designed for high precision
In various electronic devices, crystal oscillators are the core components of clock signals, and their accuracy directly determines the stability of the system. Due to the thermal expansion and parameter drift of quartz crystals and surrounding circuit components affected by temperature changes, the frequency of the crystal oscillator often shifts with temperature fluctuations, thereby affecting overall performance.

For applications such as 5G communication, GPS positioning, and industrial and military equipment that require extremely high frequency stability, frequency drift caused by temperature changes is a major challenge. As a result, TCXO emerged.

TCXO: Temperature compensated crystal oscillator
Temperature compensated crystal oscillator (TCXO) is a quartz crystal oscillator that reduces the impact of environmental temperature changes on oscillation frequency by incorporating a temperature compensation circuit.

The internal thermal compensation network can sense changes in ambient temperature and adjust the voltage applied to the crystal to offset the frequency drift caused by temperature changes, thereby improving the frequency stability of the oscillator.

The advantages of TCXO temperature compensated crystal oscillator
Dynamic temperature sensing, ultra-high frequency stability TCXO constructs a "dynamic frequency calibration system" through a built-in temperature compensation network (integrating temperature sensors and compensation circuits), thereby maintaining extremely high frequency stability of TCXO within the operating temperature range.

Within the temperature range of -40 ℃ to 85 ℃:
The frequency stability of ordinary crystal oscillators is usually within ± 30PPM~± 50PPM
The frequency stability of TCXO can reach ± 0.1PPM~± 2.5PPM, greatly improving the stability of clock signals

TCXO product actual test data

(Frequency stability ≤± 2.5PPM@-40 ~85℃）

Typical applications of TCXO temperature compensated crystal oscillator
Communication base station (5G/4G)
The synchronization requirements for clock signals between base stations are strict, with errors reaching the nanosecond level; The ± 0.1ppm high stability of TCXO ensures precise signal synchronization, avoiding call disconnections or data transmission conflicts.

Satellite navigation (GPS/Beidou)
Satellite navigation requires extremely high accuracy and a small acceptable error range. The TCXO's ability to resist temperature drift can ensure accurate positioning in extreme environments without drifting, thus meeting the requirements of precise navigation and positioning.

Industrial Automation (Industrial Robots)
Multi device collaborative operation requires precise clock synchronization. The high reliability and precise frequency of TCXO ensure accurate signal synchronization, reduce the risk of robotic arm collision, and minimize operational errors.

High end consumer electronics (smartphones/drones)
Smartphones/drones and other devices rely on TCXO's temperature compensation function and high frequency accuracy to ensure stable transmission of GPS/5G signals, thereby improving overall performance.

TCXO Temperature compensated Crystal Oscillator Selection Guide
Xintu provides a TCXO product portfolio with ultra-high frequency stability, miniaturization, low phase noise, low power consumption, and ultra-high frequency.
1. Single ended TCXO V.S differential TCXO
Single ended TCXO: Provides two types of output modes: CMOS and Clipped sine wave; The conventional temperature stability is ± 2.5PPM (YSO510TP), and the highest temperature stability can reach ± 0.1PPM (YSO512ET)

Differential TCXO: Provides temperature compensated crystal oscillators with output modes including LVDS, LVPECL, HCSL, CML, etc., such as YSO250PT series and YSO251PJ series.

2. Conventional fixed frequency TCXO V.S programmable TCXO
Conventional fixed frequency TCXO: high frequency stability; The optimal frequency temperature stability of conventional fixed frequency TCXO can reach ± 0.1PPM (YSO512ET)

Programmable TCXO: Wide frequency range; Programmable TCXO supports arbitrary programming of frequencies within the range of 10~2100MHz

3. Temperature compensated crystal oscillator V.S voltage controlled temperature compensated crystal oscillator
If a crystal oscillator with both temperature compensation and voltage control functions is required, it is recommended to choose a voltage controlled temperature compensation crystal oscillator (VCTCXO), such as YSV350TP, YSV531PT, etc.

In this world that pursues precision, temperature should not be a reason for compromise. TCXO not only knows the cold and hot, but also understands the desire of each chip for stable clock signals~
If you have high-precision temperature compensated crystal oscillator (TCXO) requirements, please feel free to contact Xintu~