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TCXO temperature compensated crystal oscillator: born for high precision
In various electronic devices, the crystal oscillator is the core component of the clock signal, and its accuracy directly determines the stability of the system. Since the quartz crystal and the surrounding circuit components will undergo thermal expansion and parameter drift due to temperature changes, the frequency of the crystal oscillator often shifts with temperature fluctuations, thus affecting the overall performance.
For applications such as 5G communications, GPS positioning, and industrial and military equipment that require extremely high frequency stability, the frequency drift caused by temperature changes is a major challenge. For this reason, TCXO came into being.
TCXO: Temperature Compensated Crystal Oscillator
The temperature compensated crystal oscillator (TCXO) is a quartz crystal oscillator that uses a built-in temperature compensation circuit to reduce the impact of ambient temperature changes on the oscillation frequency.
The internal thermistor 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.
YXC high-precision temperature-compensated oscillator: YSO510TP
Advantages of TCXO temperature-compensated crystal oscillator
Dynamic temperature perception, ultra-high frequency stability
TCXO builds a "dynamic frequency calibration system" through a built-in temperature compensation network (integrated temperature sensor and compensation circuit), so that TCXO maintains extremely high frequency stability within the operating temperature range.
In the temperature range of -40℃ ~ +85℃:
The frequency stability of ordinary crystal oscillators is usually ±30PPM ~ ±50PPM
The frequency stability of TCXO can reach ±0.1PPM~ ±2.5PPM, which greatly improves the stability of the clock signal
YXC TCXO product measured data
(Frequency stability ≤±2.5PPM@-40~85℃)
Typical applications of TCXO temperature-compensated crystal oscillators
Communication base stations (5G/4G)
The synchronization requirements for clock signals between base stations are strict, and the error must reach the nanosecond level; TCXO's ±0.1ppm high stability ensures accurate signal synchronization to avoid call disconnection or data transmission conflicts.
Satellite navigation (GPS/Beidou)
Satellite navigation has extremely high accuracy requirements and a small acceptable error range. The temperature drift resistance of TCXO can ensure that positioning does not drift in extreme environments, thereby meeting the requirements of accurate 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 robot arm collision and reduce operation errors.
High-end consumer electronics (smartphones/drones)
Smartphones/drones and other devices rely on the temperature compensation function and high frequency accuracy of TCXO to ensure the stable transmission of GPS/5G signals, thereby improving overall performance.
TCXO temperature-compensated crystal oscillator selection guide
YXC temperature-compensated crystal oscillator selection table
YXC provides a portfolio of TCXO products with ultra-high frequency stability, miniaturization, low phase noise, low power consumption, and ultra-high frequency.
1. Single-ended TCXO vs. Differential TCXO
Single-ended TCXO: YXC provides two types of output modes: CMOS and Clipped sine wave; the normal temperature stability is ±2.5PPM (YSO510TP), and the temperature stability can reach up to ±0.1PPM (YSO512ET)
Differential TCXO: YXC provides temperature-compensated crystal oscillators including LVDS, LVPECL, HCSL, CML and other output modes, such as YSO250PT series and YSO251PJ series.
2. Conventional frequency-controlled TCXO V.S. Programmable TCXO
Conventional frequency-controlled TCXO: high frequency stability; YXC conventional frequency-controlled TCXO frequency temperature stability can reach ±0.1PPM (YSO512ET)
Programmable TCXO: wide frequency range; YXC programmable TCXO supports arbitrary frequency burning in 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-compensated crystal oscillator (VCTCXO), such as YSV350TP, YSV531PT, etc.
In this world of pursuit of precision, temperature should not be a reason for compromise. YXC's TCXO not only knows cold and heat, but also understands the desire of each chip for a stable clock signal~
If you need a high-precision temperature-compensated crystal oscillator (TCXO), please contact YXC Yangxing Technology~
