The SiT7202 is a commercial-off-the-shelf (COTS) ruggedized MEMS TCXO that is ideal RF systems. This precision timing device combines ±100 ppb frequency stability over -40 to 105°C with RF-quality phase noise, ±110 fs phase jitter and low g-sensitivity of 0.01 ppb/g in a compact 5035 ceramic package. The SiT7202 Super-TCXO can replace a fragile and bulky OCXO in equipment designed for rough environments.
This Low Noise Super-TCXO has excellent Allan deviation rated at 1E-11 to reduce error rate in processing signals with long integration time such as encrypted signals. SiT7202 is available with ±400 ppm frequency tuning with 5E-14 resolution through I2C and SPI.
Related Blog: New Low-Phase-Noise High-Stability MEMS Super-TCXOs Replace Quartz OCXOs in RF Systems
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| "Specs" | "Value" |
|---|---|
| Frequency | 60 to 220 MHz |
| Frequency Stability (ppm) | ±0.1, ±0.2, ±0.25 |
| Operating Temperature Range (°C) | -40 to 105 |
| Package Type (mm²) | 5.0 x 3.5, 10-pin |
| Phase Jitter (rms) | 110 fs |
| Pull Range (ppm) | ±3.125, ±6.25, ±10, ±12.5, ±25, ±50, ±100, ±200, ±400 |
| Voltage Supply (V) | 1.8, 2.5, 2.8, 3.0, 3.3 |
| Features | Low-phase-noise, precision TCXO with digital control. Contact SiTime for -55 to 105°C |
| Availability | Pre-Production Sampling |
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Image: Elite Ceramic 5032 10-pin package, top & bottom
Up to 60 MHz output frequency
- Eliminates need for frequency multipliers
Exceptional dynamic stability under airflow, fast temperature ramp and vibrations
- ±100 ppb over-temp. stability from -40 to 105°C
- ±1 ppb/°C frequency slope (ΔF/ΔT), 1°C/min. ramp
- Maintains system performance under rough temperature perturbations
- 0.01 ppb/g g-sensitivity
- 1E-11 ADEV at 10 second average time
- No activity dips or micro-jumps -- not present in MEMS timing technology
- Resilient to board bending
RF-grade phase noise, 20x better under vibration
- -143 dBc/Hz at 10 kHz offset (122.88 MHz nominal)
- Phase noise virtually unchanged under vibrations
0.2 ps/mV power supply noise rejection (PSNR)
- On-chip regulators eliminate the need for external LDOs and simplify the BOM
Factory programmable for short lead time
- Any frequency from 60 to 220 MHz
- 1.8 to 3.3 V supply voltage
- LVCMOS or Clipped sinewave output, optimizes for best balance between EMI and jitter
Digital frequency tuning through I2C or SPI
- ±400 ppm pull range with 5E-14 resolution: Smooth frequency transition due to resolution below ADEV
- Eliminate frequency shift caused by board noise
- Can eliminate the need for a data converter
Superior reliability
- 1 billion hours MTBF
- 20,000 g shock survivability
- Lifetime warranty reduces repair costs and field failures due to clock components
- Ruggedized Applications
- Manpack Radios
- Radar
- GPS / GNSS Modules
- SatCom Terminal
- LEO SatCom
- Electronic Defense
- Avionics
Frequency Slope (dF/dT) Calculator – Calculate frequency slope over temperature
Time Error Simulation Software – Simulate and analyze the impact of the local oscillator
TimeMaster Configuration Software – Configure and evaluate oscillators via I2C/SP
Reliability Calculator – Get FIT/MTBF data for various operating conditions
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