KCCS
Precision Timing
Ultra-low power chip-scale atomic clock. Only 130mW power consumption with SA.45s pin-compatible package. Multi-frequency output available.
| Parameter | KCSA35 Specification |
|---|---|
| Package (mm) | 41 × 35 × 12 |
| Output Frequencies | 10 MHz / 16.384 MHz / 20 MHz / 24.576 MHz |
| Factory Frequency Offset | ≤±5E-11 |
| Frequency Stability | ≤3E-10/s, ≤1E-10/10s, ≤3E-11/100s |
| Aging (after 24h continuous) | ≤3E-11 / 24h |
| Frequency vs. Temperature | ≤1E-9 (-10~+70℃) |
| Frequency Accuracy (after 2h 1PPS lock) | ≤±1E-12 / 24h |
| Time to Lock (@25℃) | ≤4 minutes |
| Holdover (after 24h discipline) | ≤5 μs / 24h |
| Power Consumption | Steady-State ≤130 mW, Warm-Up ≤200 mW |
| Supply Voltage (Vdc) | +3.2 ~ +3.4 |
| Operating Temp. Range | -10 ~ +70℃ |
A chip-scale atomic clock (CSAC) is a miniature atomic frequency standard that uses coherent population trapping (CPT) in a vapor cell to stabilize an oscillator. KCCS CSACs consume only 130 mW, making them suitable for battery-powered and portable applications where rubidium standards are too power-hungry.
CSAC offers better long-term stability than OCXO (ADEV <3E-11 at 1s vs <1E-12 for premium OCXO) but lower than rubidium (<1E-11). CSAC is much smaller and lower power (130 mW) than rubidium (<5 W), filling the gap between high-end OCXO and full-size atomic standards.
Yes. KCCS CSAC uses the SA.45s pin-compatible DIP package, allowing direct drop-in replacement. The multi-frequency version outputs 10, 16.384, 20 and 24.576 MHz simultaneously at 150 mW, with I2C/UART digital interface.
KCCS chip-scale atomic clocks achieve rated stability within <3 minutes of power-on. This is comparable to high-end OCXOs and much faster than traditional rubidium standards (which typically require 5-10 minutes).
Our technical team can help you choose the optimal oscillator for your specific application requirements.