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0.1 ppm, µPower, Low-Jitter, Ruggedized 32.768 kHz Super-TCXO
LoginThe Endura™ SiT7910 ruggedized 32.768 kHz Super-TCXO is designed for pulse-per-second (pps) timekeeping in aerospace, defense and other applications that operate in harsh environments.
With best-in-class ±0.1 to 0.4 ppm frequency stability, this 32.768 kHz reference clock is ideal for GNSS receivers. It has 25x better stability which enables GNSS signal lock within seconds (compared to 30+ sec with legacy quartz clocks) to provide accurate timing and location data much faster. Performance is further enhanced with low 2-ns RMS phase jitter and 20-year aging of only ±2.5 ppm.
The SiT7910 Super-TCXO is built for ruggedized hand radios, portable equipment, ground vehicles and airborne environments. It has an operating temperature range from -55°C to 105°C, has best-in-class 20 ppb/g g-sensitivity for resilience in high vibration environments, and consumes only 6.0 µA to extend battery life. It is 100% screened through the SiTime Endura process flow to provide high reliability.
| "Specs" | "Value" |
|---|---|
| Frequency | 32.768 kHz |
| Frequency Stability (ppm) | ±0.1, ±0.2, ±0.4 |
| Output Type | LVCMOS |
| Operating Temperature Range (°C) | -40 to 85, -40 to 105, -55 to 105 |
| Voltage Supply (V) | 1.8, 1.62 to 3.63 |
| Package Type (mm²) | 2.5x2.0 ceramic |
| Features | Low g-sensitivity (20 ppb/g), low phase jitter (2 ns RMS), low 20-year aging (±5 ppm) |
| Availability | Pre-production Sampling |
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2520-4-Pin-Ceramic-MEMS-Oscillator
Most accurate 32.768 kHz TCXO on the market for the fastest GNSS signal lock, most accurate time synchronization, and fastest position acquisition
- ±0.1 ppm over -40°C to +85°C for 1.8V
- ±0.2 ppm over -55°C to +105°C for 1.8V
- ±0.4 ppm over -55°C to +105°C for 1.62 to 3.63V
- ±2.5 ppm 20-year aging
Robust against shock, vibration, and temperature
- Low g-sensitivity: 20 ppb/g
Ultra-low power: 6 µA (typ)
- Maximizes battery life
Low jitter 2 ns RMS (typ) Integrated Phase Jitter
- Ideal for communications and radio applications
Small footprint
- 2.5 x 2.0 mm ceramic package saves board space
- Pulse-per-second (PPS) timekeeping
- RTC reference clock
- GPS/GNSS modules
- Defense & aerospace
- Land mobile radio
- Audio and processor clocking in portable navigation devices (PND)
- Vehicle comms/telemetry
- Airborne communications
| Resource Name | Type |
|---|---|
| AN23033 Thermal Considerations for SiTime Products | Application Notes |
