SiTime MEMS precision oscillators deliver the most stable timing under environmental stressors – airflow, rapid temperature change, shock, vibration, poor power supply, and EMI – in a small, robust package. These devices can be programmed to any combination of frequency, stability, voltage, and pull range within a wide range of parameters, eliminating the long lead times, customization costs, and reliability concerns associated with quartz TCXOs and OCXOs.
Super-TCXOs
Elite Platform®, Elite X™, and Elite RF™ Super-TCXOs are precision timing solutions with exceptional dynamic performance and rich features. These devices solve deep-rooted timing problems for telecom, RF, networking, edge synchronization, and precision GNSS applications. By combining tight-stability and low phase noise with the robust package of a ceramic TCXO, SiTime Super-TCXOs replace legacy quartz OCXOs while increasing reliability, lowering power, and reducing size.
- Tight stability (±0.01 ppm to ±2.5 ppm), 1 to 220 MHz
- Better dynamic stability than quartz (±0.5 ppb/°C ΔF/ΔT), resistant to airflow and thermal shock
- -40°C to 105°C operation uniquely enables fan-less outdoor equipment
- Low phase noise: -159 dBc/Hz at 10 kHz (19.2 MHz nominal)
- Lower power consumption (110 mW, 2.5V) for battery-operated edge equipment
- I2C digital frequency tuning eliminates external DAC and sensitivity to board noise
- On-chip power supply noise filtering eliminates dedicated LDO
| Device | Datasheet | Buy Now | Frequency | Stability(ppm) | Output Type | Supply Voltage(V) | Temp. Range(°C) | Package Size(mm) |
|---|---|---|---|---|---|---|---|---|
| SiT5155 |
|
12 standard frequencies | ±0.5 | LVCMOS Clipped sinewave | 2.5 2.8 3 3.3 | -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
| SiT5156 |
|
1 to 60 MHz | ±0.5 ±1 ±2.5 | LVCMOS Clipped sinewave | 2.5 2.8 3 3.3 | -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
| SiT5157 |
|
60 to 220 MHz | ±0.5 ±1 ±2.5 | LVCMOS | 2.5 2.8 3 3.3 | -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
| SiT5356 |
|
1 to 60 MHz | ±0.1 ±0.2 ±0.25 | LVCMOS Clipped sinewave | 2.5 2.8 3 3.3 | -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
| SiT5357 |
|
60 to 220 MHz | ±0.1 ±0.2 ±0.25 | LVCMOS | 2.5 2.8 3 3.3 | -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
| SiT5358 |
|
1 to 60 MHz | ±0.05 | LVCMOS Clipped sinewave | 2.5 2.8 3.0 3.3 | 0 to +70 -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
| SiT5359 |
|
60 to 220 MHz | ±0.05 (±50 ppb) | LVCMOS | 2.5 2.8 3.0 3.3 | 0 to +70 -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
| SiT5376 |
|
1 to 60 MHz | ±0.1 ±0.2 ±0.25 | LVCMOS Clipped Sinewave | 1.8 2.5 2.8 3.0 3.3 | -20 to 70 -40 to +85 -40 to +105 | 5.0 x 3.5 10-pin | |
| SiT5377 |
|
60 to 220 MHz | ±0.1 ±0.2 ±0.25 | LVDS | 1.8 2.5 2.8 3.0 3.3 | -20 to 70 -40 to +85 -40 to +105 | 5.0 x 3.5, 10-pin | |
| SiT5501 |
|
1 to 60 MHz | ±0.01 (±10 ppb) ±0.02 (±20 ppb) | LVCMOS Clipped sinewave | 2.5 2.8 3.0 3.3 | -40 to +85 -40 to +105 | 7.0 x 5.0 10-pin | |
| SiT5503 |
|
1 to 60 MHz | ±0.005 (±5 ppb) | LVCMOS Clipped sinewave | 2.5 2.8 3.0 3.3 | -20 to +70 -40 to +85 -40 to +95 | 7.0 x 5.0 10-pin | |
| SiT5977 |
|
156.25 MHz | ±0.1 ±0.2 ±0.25 | LVDS | 3.3 | -40 to +85 | 5.0 x 3.5, 10-pin |
Key Resources
Automotive TCXOs
SiTime’s AEC-Q100 automotive TCXOs are based on the Elite Platform™ and are engineered to deliver higher dynamic performance, reliability and robustness, making them ideal for autonomous driving systems. These 1 to 220 MHz precision devices with tight stability (±0.1 ppm to ±2.5 ppm) over AEC-Q100 Grade-2 temperature from -40°C to 105°C, solve deep-rooted timing problems in harsh automotive environments.
- 30x better dynamic stability (1 ppb/°C ΔF/ΔT) than quartz, resistant to airflow and thermal shock
- AEC-Q100 Grade-2 -40°C to 105°C operation for high-temp environments
- Industry best G-sensitivity of 0.1 ppb/g
- Better shock resistance at 10,000g, vibration resistance at 70g
- Higher reliability at over 1 billion hours MTBF (< 1 FIT)
| Device | Datasheet | Buy Now | Frequency | Stability(ppm) | Output Type | Supply Voltage(V) | Temp. Range(°C) | Package Size(mm) |
|---|---|---|---|---|---|---|---|---|
| SiT5186 |
|
1 to 60 MHz | ±0.5 ±1 ±2.5 | LVCMOS Clipped Sinewave | 2.5 2.8 3 3.3 | -20 to 70 (Gr 4) -40 to 85 (Gr 3) -40 to 105 (Gr 2) | 5.0 x 3.2 10-pin | |
| SiT5187 |
|
60 to 220 MHz | ±0.5 ±1 ±2.5 | LVCMOS | 2.5 2.8 3 3.3 | -20 to 70 (Gr 4) -40 to 85 (Gr 3) -40 to 105 (Gr 2) | 5.0 x 3.2 10-pin | |
| SiT5386 |
|
1 to 60 MHz | ±0.1 ±0.2 ±0.25 | LVCMOS Clipped Sinewave | 2.5 2.8 3 3.3 | -20 to 70 (Gr 4) -40 to 85 (Gr 3) -40 to 105 (Gr 2) | 5.0 x 3.2 10-pin | |
| SiT5387 |
|
60 to 220 MHz | ±0.1 ±0.2 ±0.25 | LVCMOS | 2.5 2.8 3 3.3 | -20 to +70 (Gr 4) -40 to +85 (Gr 3) -40 to +105 (Gr 2) | 5.0 x 3.2 10-pin |
TCXOs
SiTime's programmable temperature-compensated oscillators (TCXOs) are ultra flexible and have high reliability. Our SiT5021/22 TCXOs are ideal for telecom, networking, and industrial applications, and our SiT5008 TCXO is designed for IoT and connected consumer applications. These solutions are pin-compatible with quartz TCXOs, enabling 100% drop-in replacement without redesign or layout changes.
- Wide frequency range from 1 MHz to 625 MHz
- LVPECL, LVDS, and LVCMOS support
- Tight frequency stability
- Optional voltage control with a wide pull range up to ±1600 ppm (SiT5021 and SiT5022)
| Device | Datasheet | Buy Now | Frequency | Stability(ppm) | Output Type | Supply Voltage(V) | Temp. Range(°C) | Package Size(mm) |
|---|---|---|---|---|---|---|---|---|
| SiT5021 |
|
1 to 220 MHz | ±5 | LVPECL LVDS | 2.5 3.3 2.25 to 3.63 | -20 to +70 -40 to +85 | 3.2x2.5 5.0x3.2 7.0x5.0 | |
| SiT5022 |
|
220 to 625 MHz | ±5 | LVPECL LVDS | 2.5 3.3 2.25 to 3.63 | -20 to +70 -40 to +85 | 3.2x2.5 5.0x3.2 7.0x5.0 |