Product Overview
The Skyworks Si510/511 Crystal Oscillator (XO) is an IC-based solution utilizing advanced DSPLL technology to generate any frequency from 100 kHz to 250 MHz. Unlike traditional XOs, it uses a single fixed crystal and a proprietary synthesizer, offering enhanced reliability, improved mechanical robustness, and excellent stability. This design provides superior supply noise rejection, simplifying low jitter clock generation in noisy environments. Crystal ESR and DLD are individually production-tested for guaranteed performance. The Si510/511 is factory-configurable for various user specifications, including frequency, supply voltage, output format, and stability, eliminating long lead times and NRE charges.
Product Attributes
- Brand: Skyworks Solutions
- Technology: DSPLL
- Certifications: Pb-free, RoHS compliant
Technical Specifications
| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit |
| Operating Specifications | ||||||
| Supply Voltage | VDD | 3.3 V option | 2.97 | 3.3 | 3.63 | V |
| 2.5 V option | 2.25 | 2.5 | 2.75 | V | ||
| 1.8 V option | 1.71 | 1.8 | 1.89 | V | ||
| Supply Current | IDD | CMOS, 100 MHz, single-ended | 21 | 26 | mA | |
| LVDS (output enabled) | 19 | 23 | mA | |||
| LVPECL (output enabled) | 39 | 43 | mA | |||
| HCSL (output enabled) | 41 | 44 | mA | |||
| Tristate (output disabled) | 18 | mA | ||||
| OE "1" Setting | VIH | See Note | 0.80 x VDD | V | ||
| OE "0" Setting | VIL | See Note | 0.20 x VDD | V | ||
| OE Internal Pull-Up/Pull-Down Resistor | RI | 45 | k | |||
| Operating Temperature | TA | 40 | 85 | o | ||
| Output Clock Frequency Characteristics | ||||||
| Nominal Frequency | FO | CMOS, Dual CMOS | 0.1 | 212.5 | MHz | |
| LVDS/LVPECL/HCSL | 0.1 | 250 | MHz | |||
| Total Stability | Frequency Stability Grade C | 30 | +30 | ppm | ||
| Frequency Stability Grade B | 50 | +50 | ppm | |||
| Frequency Stability Grade A | 100 | +100 | ppm | |||
| Temperature Stability | Frequency Stability Grade C | 20 | +20 | ppm | ||
| Frequency Stability Grade B | 25 | +25 | ppm | |||
| Frequency Stability Grade A | 50 | +50 | ppm | |||
| Startup Time | TSU | Minimum VDD until output frequency (FO) within specification | 10 | ms | ||
| Disable Time | TD | FO 10 MHz | 5 | s | ||
| FO < 10 MHz | 40 | s | ||||
| Enable Time | TE | FO 10 MHz | 20 | s | ||
| FO < 10 MHz | 60 | s | ||||
| Output Clock Levels and Symmetry | ||||||
| CMOS Output Logic High | VOH | 0.85 x VDD | V | |||
| CMOS Output Logic Low | VOL | 0.15 x VDD | V | |||
| CMOS Output Rise/Fall Time (20 to 80% VDD) | TR/TF | 0.1 to 212.5 MHz, CL = 15 pF | 0.45 | 0.8 | 1.2 | ns |
| 0.1 to 212.5 MHz, CL = no load | 0.3 | 0.6 | 0.9 | ns | ||
| LVPECL Output Rise/Fall Time (20 to 80% VDD) | TR/TF | 100 | 565 | ps | ||
| HCSL Output Rise/Fall Time (20 to 80% VDD) | TR/TF | 100 | 470 | ps | ||
| LVDS Output Rise/Fall Time (20 to 80% VDD) | TR/TF | 350 | 800 | ps | ||
| LVPECL Output Common Mode | VOC | 50 to VDD 2 V, single-ended | VDD 1.4 V | V | ||
| LVPECL Output Swing | VO | 50 to VDD 2 V, single-ended | 0.55 | 0.8 | 0.90 | VPPSE |
| LVDS Output Common Mode | VOC | 100 line-line, VDD = 3.3/2.5 V | 1.13 | 1.23 | 1.33 | V |
| 100 line-line, VDD = 1.8 V | 0.83 | 0.92 | 1.00 | V | ||
| LVDS Output Swing | VO | Single-ended, 100 differential termination | 0.25 | 0.35 | 0.45 | VPPSE |
| HCSL Output Common Mode | VOC | 50 to ground | 0.35 | 0.38 | 0.42 | V |
| HCSL Output Swing | VO | Single-ended | 0.58 | 0.73 | 0.85 | VPPSE |
| Duty Cycle | DC | All formats | 48 | 50 | 52 | % |
| Output Clock Jitter and Phase Noise (LVPECL) | ||||||
| Period Jitter (RMS) | JPRMS | 10k samples | 1.3 | ps | ||
| Period Jitter (Pk-Pk) | JPPKPK | 10k samples | 11 | ps | ||
| Phase Jitter (RMS) | J | 1.875 MHz to 20 MHz integration bandwidth (brickwall) | 0.31 | 0.5 | ps | |
| 12 kHz to 20 MHz integration bandwidth (brickwall) | 0.8 | 1.0 | ps | |||
| Phase Noise, 156.25 MHz | N | 100 Hz | 86 | dBc/Hz | ||
| 1 kHz | 109 | dBc/Hz | ||||
| 10 kHz | 116 | dBc/Hz | ||||
| 100 kHz | 123 | dBc/Hz | ||||
| 1 MHz | 136 | dBc/Hz | ||||
| Additive RMS Jitter Due to External Power Supply Noise | JPSR | 10 kHz sinusoidal noise | 3.0 | ps | ||
| 100 kHz sinusoidal noise | ps | |||||
2411041604_SKYWORKS-511QAA-CBAG_C7024357.pdf
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