Ultra-low power, low-jitter, 32.768 kHz programmable oscillator in 1.2 x 1.1 mm package
LoginThe SiT1811 is a ±20 ppm oscillator with a default frequency of 32.768 kHz. With a no-load current of only 510 nA, the SiT1811 is designed for low-power, space-constrained applications. This device comes in a tiny 1.2 X 1.1 mm QFN package. No external load caps are needed with the SiT1811, resulting in a 50% smaller timing solution compared to 2.0 x 1.2 mm SMD crystals (XTALs). Additionally, the SiT1811 can drive multiple loads up to 100 pf, replacing more than one XTAL and further reducing board space.
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| "Specs" | "Value" |
|---|---|
| Frequency | 32.768 kHz, Contact SiTime for more |
| Frequency Stability (ppm) | ±20 |
| Operating Temperature Range (°C) | 0 to +70, -10 to +85 |
| Package Type (mm²) | 1.2x1.1 |
| Phase Jitter (rms) | 3 ns (typ.) |
| Voltage Supply (V) | 1.35 to 1.98 |
| Features | Low current: 510 nA; Small footprint: 1.32 mm2; Contact SiTime for other frequencies |
| Availability | Production |
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Image: 6-pin package, top & bottom
Ultra-low Power: 510 nA (typ.)
- Extends battery life
Operates down to 1.35 V
- Supports coin-cell or supercap battery backup
Reduced Swing technology
- Programmable output swing down to 0.6 V minimizes power
Small footprint: 1.2 x 1.1 mm
- Saves board space compared to the 2012 SMD XTALs
Ultra-low jitter
- 3 ns rms integrated phase jitter
Drives multiple loads up to 100 pf
- One SiT1811 can replace multiple quartz XTALs
No load or VDD filtering capacitors
- Eliminates any external capacitors, further reducing board space
- Eliminates load dependent startup issues
±20 ppm frequency stability over temperature
- Better stability compared to quartz XTALs
- Improves wireless connectivity and RTC accuracy
- Wearables
- Hearables
- Health & Wellness Monitors
- Industrial Applications
- Portable Gaming Devices
- Smart Glasses
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