In high-precision satellite navigation, the performance of the frequency source directly determines system positioning accuracy and stability. As the BeiDou System (BDS) is widely adopted in applications such as vehicle navigation, IoT, and timing synchronization, the demand for high-performance, low-power, miniaturized frequency components continues to grow. The TT53H4-10.000-33NQDTN 10 MHz TCXO from Suzhou Hangjing is a highly stable timing solution developed precisely to meet this demand.
Core Value for BeiDou Applications
Inside a BeiDou receiver, from the RF front end and local oscillator generation to baseband sampling and time synchronization, a highly stable reference clock is essential. The TT53H4 10 MHz TCXO plays a critical role in the following key areas:
Enhanced Signal Acquisition and Tracking Capability
This device delivers outstanding frequency stability:
Frequency Stability: ±0.5 ppm (–40°C to +85°C)
Initial Frequency Tolerance: ±1.0 ppm
In BeiDou signal reception, this translates to:
Reduced frequency offset error
Narrower Doppler search range
Faster satellite signal acquisition speed
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Optimized Positioning Accuracy and Convergence Speed
Frequency errors in a TCXO translate into time errors, which in turn affect pseudorange calculations. The TT53H4 effectively minimizes error accumulation caused by environmental variations through:
Voltage Stability: ±0.2 ppm (Vcc ±5%)
Load Stability: ±0.2 ppm
This ensures that BeiDou terminals maintain stable positioning performance even in dynamic environments.
3.Low Phase Noise Design for Enhanced Weak Signal Performance
This model features excellent phase noise performance:
–97 dBc/Hz @ 10 Hz
–125 dBc/Hz @ 100 Hz
–145 dBc/Hz @ 1 kHz
–155 dBc/Hz @ 100 kHz
Benefits:
Enhanced weak signal tracking capability
Improved receiver signal-to-noise ratio (SNR)
Reduced bit error rate (BER)
This is particularly critical in challenging environments such as urban canyons and indoor areas.
4. Support for BeiDou Timing and Holdover
In timing equipment, when satellite signals are temporarily lost, the TCXO must maintain local time continuity. The TT53H4 provides:
Low Aging Rate: ±1 ppm/year
Fast Start-Up: 5 ms
This ensures that the system maintains stable timing output (e.g., 10 MHz + PPS) even during short-term signal lock loss.
Key Product Specification Highlights
Basic Parameters
Nominal Frequency: 10.000 MHz
Output Type: HCMOS
Supply Voltage: 3.3V
Package Size: SMD 5.0 × 3.2 mm (compact design)
Electrical Performance Advantages
Duty Cycle: 45% ~ 55% (excellent waveform symmetry)
Rise/Fall Time: 6 ns (compatible with high-speed digital systems)
Current Consumption: Only 6 mA (low-power design)
Wide Temperature Range & High Reliability
Operating Temperature: –40°C ~ +85°C
Qualified through multiple reliability tests:
>>Temperature cycling (1,000 cycles)
>>High temperature and humidity (85°C / 85% RH)
>>Vibration / Drop / ESD
Frequency drift: All maintained within ±1 ppm
III. Typical Application Scenarios
The TT53H4-10.000-33NQDTN is widely used in:
BeiDou / GNSS Receivers
Automotive navigation
Handheld terminals
Drone positioning
Communication & Synchronization Equipment
5G small cells
Time synchronization servers
Network timing equipment
Industrial & IoT Applications
Smart grid
Industrial control systems
High-precision data acquisition
IV. Why Choose the TT53H4?
Compared with standard crystal oscillators (XO) and high-cost OCXOs, the TT53H4 achieves an optimal balance between performance and cost:
ppm-level high stability to meet BeiDou application requirements
Low phase noise design for enhanced performance in complex environments
Compact size + low power consumption, ideal for embedded devices
High reliability for demanding industrial environments
Excellent cost-performance ratio for large-scale deployment
V. Conclusion
As the BeiDou System continues to evolve toward higher precision, lower power consumption, and miniaturization, the TCXO has become the core frequency reference for terminal equipment. The TT53H4-10.000-33NQDTN, with its excellent frequency stability, low phase noise performance, and high reliability, provides a solid and dependable timing foundation for BeiDou navigation, timing synchronization, and communication systems.
It is more than just a crystal oscillator-it is the critical "heartbeat source" that ensures system performance and stability.