Skyworks Solutions Si540 Ultra Series Crystal Oscillator
Product Overview
The Skyworks Solutions Si540 Ultra Series Crystal Oscillator is an advanced clock generator utilizing 4th generation DSPLL technology to deliver ultra-low jitter and low phase noise across any output frequency from 0.2 to 1500 MHz. With <1 ppb resolution, it maintains exceptional jitter performance for both integer and fractional frequencies. The Si540 offers high reliability, frequency stability, and guaranteed aging performance. Its on-chip power supply filtering provides superior power supply noise rejection, simplifying low-jitter clock generation in noisy systems. Available in industry-standard footprints with a simplified supply chain, custom frequency samples can be delivered in 1-2 weeks. This oscillator is factory-programmable for user-defined specifications, including frequency, output format, and OE pin configuration, eliminating long lead times associated with custom oscillators. It is ideal for applications such as 100G/200G/400G OTN, 10G/40G/100G optical Ethernet, broadcast video (3G-SDI/12G-SDI/24G-SDI), servers, switches, storage, NICs, test and measurement, clock and data recovery, and FPGA/ASIC clocking.
Product Attributes
- Brand: Skyworks Solutions
- Series: Ultra Series
- Technology: 4th generation DSPLL
- Custom frequency samples lead time: 1-2 weeks
Technical Specifications
| Feature | Specification | Details |
|---|---|---|
| Frequency Range | 0.2 MHz to 1500 MHz | <1 ppb resolution |
| Jitter (RMS) | 125 fs Typ | (12 kHz 20 MHz) |
| Power Supply Noise Rejection (PSNR) | -80 dBc Typ | |
| Temperature Stability | 7 ppm option | (-40 to 85C) |
| Supply Voltage (VDD) | 3.3 V, 2.5 V, 1.8 V | From the same part number |
| Output Formats | LVPECL, LVDS, CML, HCSL, CMOS, Dual CMOS | |
| Package Options | 2.53.2 mm, 3.25 mm, 57 mm | |
| Total Stability (Grade C) | 7 ppm | Includes temp stability, initial accuracy, load pulling, VDD variation, and 20 year aging at 70 C. |
| Rise/Fall Time (LVPECL/LVDS/CML) | 350 ps Typ | |
| Rise/Fall Time (HCSL, FCLK >50 MHz) | 550 ps Typ | |
| Duty Cycle | 45% - 55% | All formats |
| Output Enable (OE) VIH | 0.7 VDD | |
| Output Enable (OE) VIL | 0.3 VDD | |
| Output Disable Time (FCLK >10 MHz) | 3 s Max | |
| Output Enable Time (FCLK >10 MHz) | 20 s Max | |
| Powerup Time (tOSC) | 10 ms Max | Time from 0.9 VDD until output frequency within spec |
| VDD Ramp Rate (VRAMP) | 100 V/ms Max | Fastest VDD ramp rate allowed on startup |
| LVPECL Output Swing (diff) | 1.1 1.9 VPP Typ | |
| LVDS Output Swing (FCLK 1.4 GHz) | 0.6 0.9 VPP Typ | |
| HCSL Output VOH | 660 850 mV Typ | |
| HCSL Output VOL | -150 150 mV Typ | |
| HCSL Output VC Crossing voltage | 250 550 mV Typ | |
| CML Output Swing (diff) | 0.6 1.0 VPP Typ | |
| CMOS Output VOH | 0.85 VDD Min | (for specified IOH) |
| CMOS Output VOL | 0.15 VDD Max | (for specified IOL) |
| Phase Jitter (RMS, 12kHz - 20MHz) | 125 fs Typ | 2.5x3.2mm, 3.2x5mm, FCLK 100 MHz, Differential Formats |
| Phase Jitter (RMS, 12kHz - 20MHz) | 150 fs Typ | 5x7mm, FCLK 100 MHz, Differential Formats |
| Phase Jitter (RMS, 12kHz - 20MHz) | 200 fs Typ | CMOS, Dual CMOS, all packages, FCLK 100 MHz |
| Spurs Induced by External Power Supply Noise | -83 dBc Typ | LVDS 156.25 MHz, 50 mVpp Ripple, 100 kHz sine wave |
| Environmental Compliance | MIL-STD-883 | Mechanical Shock, Vibration, Solderability, Gross/Fine Leak, Resistance to Solder Heat |
| Moisture Sensitivity Level (MSL) | 1 or 2 | Depending on package size |
| Contact Pads | Au/Ni or Au/Pd/Ni | |
| Max Junction Temperature | 125 C | |
| Absolute Maximum Operating Temp. | 95 C | |
| Storage Temperature | -55 to 125 C | |
| Supply Voltage (Max Rating) | 3.8 V | |
| Input Voltage (Max Rating) | VDD + 0.3 V | |
| ESD HBM | 2.0 kV | (JESD22-A114) |
| Solder Temperature (TPEAK) | 260 C | |
| Solder Time at TPEAK | 2040 sec |
2411061616_SKYWORKS-540AAA000244BCG_C22264014.pdf
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