1 to 220 MHz, ±10 to ±50 ppm Differential XO
The SiT9121 is a highly flexible, programmable differential oscillator that supports LVPECL and LVDS output signaling types. This differential oscillator covers any frequency between 1 to 220 MHz, with RMS phase jitter of 0.6 ps (typ.). Unlike quartz or SAW based traditional oscillators, the SiT9121 is available in any combination of voltage (2.5V to 3.3V), frequency stability (±10, ±20, ±25, and ±50 ppm) and package (3225, 5032, 7050) options.
Program oscillators to get instant samples, optimized performance, and fast prototyping | Learn More
View related products: 220 to 625 MHz | 0.23 ps phase jitter | XO lineup
| Oscillator Type | XO-DE |
| Frequency | 1 to 220 MHz |
| Frequency Stability (ppm) | ±10, ±20, ±25, ±50 |
| Phase Jitter (rms) | 0.6 ps |
| Output Type | LVPECL, LVDS |
| Operating Temperature Range (°C) | -20 to +70, -40 to +85 |
| Voltage Supply (V) | 2.5, 3.3, 2.25 to 3.63 |
| Package Type (mm²) | 3.2x2.5, 5.0x3.2, 7.0x5.0 |
| Features | Field programmable |
| Availability | Production |
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Industry standard packages for drop-in replacement of quartz oscillators without any board changes
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SiT9121 pin assignments
0.6 ps integrated RMS phase jitter (12 kHz to 20 MHz)
- Excellent jitter margin for the most stringent applications such as SONET
Excellent frequency stability, as low as ±10 PPM
- Better timing margin that enhances system stability and robustness
- Extensive programmability
- Frequency from 1 to 220 MHz
- LVPECL and LVDS output signaling types
- Supply voltage of 2.5V and 3.3V
- Frequency stability from ±10 PPM to ±50 PPM
- Customized specifications for optimal system performance
- Easy availability of any device specification within the operating range
Three industry standard packages
- 100% drop in replacement for quartz, SAW and overtone oscillators without any design changes
4 to 6 weeks lead time
- Any frequency
- Any voltage
- Any package
- Reduce inventory overhead
- Mitigate shortage risks
- 1Gb to 10Gb Ethernet
- PCIe
- FPGA
- SATA/SAS
- Fibre channel
- System clocking
- CPE & home gateway
- Precision GNSS
- GPS/GNSS modules
- Factory automation
- Security & surveillance
- Medical electronics
- Test and measurement
- Defense & aerospace
- Railroads
| Document Name | Type |
|---|---|
| 4L/6L-QFN Package Composition Report (SiT820X, SiT912X, SiT50XX, SiT380X, SiT392X) | Composition Reports |
| Manufacturing Notes for SiTime Products | Other Quality Documents |
| SiTime Conflict Minerals Policy | Other Quality Documents |
| SiTime Oscillator Reliability Report (0.18 micron CMOS process products) | Reliability Reports |
| 6L-QFN Package Qualification Report - Carsem | Reliability Reports |
| SiT912X Product Qualification Report | Reliability Reports |
| TSMC Wafer SGS Report | RoHS/Reach/Green Certificates |
| Tower Jazz Wafer SGS Report | RoHS/Reach/Green Certificates |
| 4L/6L-QFN Package Homogeneous Materials and SGS Report | RoHS/Reach/Green Certificates |
| BOSCH Wafer SGS Report | RoHS/Reach/Green Certificates |
| WLCSP Package Homogeneous Materials and SGS Report | RoHS/Reach/Green Certificates |
| SiTime Environmental Compliance Declaration | RoHS/Reach/Green Certificates |
| Certificate of Compliance-EU RoHS Declaration | RoHS/Reach/Green Certificates |
Eval Boards (Contact SiTime) – SiT6097 (3225) | SiT6086 (5032) | SiT6085 (7050)
Frequency Slope (dF/dT) Calculator – Calculate frequency slope over temperature
Time Machine II Programmer – Program frequency, voltage, stability & more
Reliability Calculator – Get FIT/MTBF data for various operating conditions
Jitter Calculator and Plots – Convert phase noise to phase jitter, find phase noise plots
5032 6-Pins | 7050 6-Pins – Preview packages with QFN 3D step models
