1 to 60 MHz, 6E-12 ADEV, ±2 ppb/°C Super-TCXO
The SiT5434 is a ±50 to ±250 ppb ultra-stable MEMS Super-TCXO built for synchronization-critical infrastructure. Part of SiTime's Elite 2 Super-TCXO® family, it delivers 6E-12 ADEV and a ±2 ppb/°C frequency slope, enabling accurate synchronization in AI data centers, high-performance compute and networking, and precision GNSS systems by maintaining time accuracy through temperature swings, airflow disturbances, and mechanical stress.
Leveraging SiTime’s unique DualMEMS® temperature sensing and TurboCompensation® technologies, SiT5434 delivers high performance in a standard 3.2 mm x 2.5 mm plastic QFN package and utilizes standard semiconductor packaging and scalable manufacturing flow – a unique combination for this class of precision products. SiT5434 is also available in a standard 5.0 mm x 3.2 mm ceramic package.
The SiT5434 can be factory programmed across its frequency range without incurring any additional lead time or customization costs, and ordered as a standard TCXO or as a DCTCXO using an I2C serial interface for output and frequency control.
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| "Specs" | "Value" |
|---|---|
| Oscillator Type | TCXO-SE |
| Frequency | 1 to 60 MHz |
| Frequency Stability (ppm) | ±0.05, ±0.1, ±0.2, ±0.25 |
| Operating Temperature Range (°C) | -40 to 85, -40 to 105 |
| Package Type (mm²) | 3.2 x 2.5, (8-pin plastic), 5.0 x 3.2 (10-pin ceramic) |
| Pull Range (ppm) | ±200 (DCTCXO) |
| Voltage Supply (V) | 1.8, 2.5, 3.0, 3.3 |
| Features | Low power, high dynamic stability, on-chip regulators, no activity dips or micro jumps |
| Availability | Engineering samples |
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3225 8-Pin MEMS Super-TCXO
Exceptional dynamic stability under airflow, fast temp. ramp
- ±50 to ±250 ppb frequency stability over temperature
- ±2 ppb/°C frequency slope (ΔF/ΔT)
- 6e-12 ADEV at 10 second averaging time
- -40°C to +105°C operating temperature
- Ensures ultra-stable performance in harsh data center environments
No activity dips or micro jumps
- Eliminates any need for costly screening or burn-in tests
Rich programmable features
- Any frequency between 1 MHz to 60 MHz
- Digital frequency pulling (DCTCXO) via I2C
- ±200 ppm pull range
- Frequency pull resolution down to 3.64 ppt
- 1.8 V, 2.5 V, 3.0 V and 3.3 V supply voltage
- On-chip regulators eliminate the need for external LDOs
LVCMOS or clipped sinewave output
- Optimizes for best balance between EMI and jitter
Resistant to shock, vibration and board bending
- Datacenter Synchronization (Compute, NIC)
- IEEE 1588 Endpoint Clock
- 5G Infrastructure
- Precision GNSS Systems
- Seismic Sensors
- Fleet Management
Frequency Slope (dF/dT) Calculator – Calculate frequency slope over temperature
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