STC21K Series – 2.0MM X 1.6MM Ceramic SMD 4 Pad Clipped Sinewave (VC)TCXO
Part Numbering Guide
Electrical Parameters
| Parameters | Units | Min | Typical | Max | Remarks |
|---|---|---|---|---|---|
| Frequency Range | MHz | 10 | 52 | ||
| Frequency Tolerance at +25ºC | ppm | -2.0 | +2.0 | ||
| Freq. Stability vs. Op Temp. | ppm | -0.5 | +0.5 | See part numbering guide for options. | |
| Freq. Stability vs. Supply Voltage | ppm | -0.2 | +0.2 | ±5% Change | |
| Freq. Stability vs. Load | ppm | -0.2 | +0.2 | ±10% Change | |
| Freq. Stability vs. Aging/Year | ppm | -1.0 | +1.0 | 1 year, | |
| Operating Temperature | °C | -40 | +85 | See part numbering guide for options. | |
| Storage Temperature | °C | -40 | +85 | ||
| Supply Voltage (VDD) - 3.0 V Option | V | 2.85 | 3.0 | 3.15 | See part numbering guide for options. |
| Current (IDD) - 10MHz - 26MHz | mA | 1.5 | |||
| Current (IDD) - 26MHz - 52MHz | mA | 2.0 | |||
| Current Voltage (VC, VCTCXO)- 1.8V | V | 0.3 | 1.5 | ||
| Current Voltage (VC, VCTCXO)- 2.5V | V | 0.4 | 2.4 | ||
| Current Voltage (VC, VCTCXO)- 2.8/3.08/3.3V | V | 0.5 | 2.5 | ||
| Pullability (VCTCXO) | ppm | ±5.0 | |||
| Output Load (Clipped Sinewave) | kΩ//pF | 10//10 | |||
| Output Logic Levels | VP-P | 0.8 | |||
| Symmetry (Duty Cycle) | % | 40 | 50 | 60 | |
| Start-Up Time | ms | 2.0 | |||
| VC Input Impedance (VCTCXO) | kΩ | 500 | |||
| Phase Noise (Typical) 100Hz Offset | dBc/Hz | -115 | At 19.2MHz | ||
| Phase Noise (Typical) 1KHz Offset | dBc/Hz | -135 | At 19.2MHz | ||
| Phase Noise (Typical) 10KHz Offset | dBc/Hz | -148 | At 19.2MHz |
Outline Drawing & Recommended Landed Pattern
All dimensions are in millimeters (mm) unless otherwise noted. Drawings are not to scale.
