Skyworks Solutions Si598/Si599 Programmable XO/VCXO
Product Overview
The Skyworks Si598 XO and Si599 VCXO are advanced clock generators utilizing proprietary DSPLL circuitry to deliver low-jitter clock signals at any frequency between 10 and 810 MHz with an exceptional 28 parts per trillion (ppt) resolution. These devices are user-programmable via a 2-pin I2C compatible serial interface, enabling dynamic frequency adjustments and multi-rate operation. The integrated crystal ensures stable, low-jitter frequency synthesis, making them ideal replacements for multiple XOs, clock generators, and DAC-controlled VCXOs. The Si599 offers voltage-controlled tuning for phase-locked loop applications, while the Si598 is digitally pullable for digital PLL applications. They are suitable for demanding applications such as SONET/SDH/xDSL, Ethernet/Fibre Channel, 3G/HD SDI, multi-rate PLLs, frequency margining, and agile RF local oscillators.
Product Attributes
- Brand: Skyworks Solutions, Inc.
- Technology: DSPLL circuitry
- Package: Industry-standard 5x7 mm
- Compliance: RoHS compliant
- Environmental: Meets MIL-STD-883 qualification test requirements for Mechanical Shock, Mechanical Vibration, Solderability, Gross & Fine Leak, Resistance to Solder Heat. Moisture Sensitivity Level: J-STD-020, MSL1.
Technical Specifications
| Parameter | Model | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Programmable Frequency Range | LVPECL/LVDS/CML | 10 | - | 810 | MHz |
| Programmable Frequency Range | CMOS | 10 | - | 160 | MHz |
| Frequency Resolution | - | - | 28 | - | ppt |
| Phase Jitter (RMS Random) | LVPECL/LVDS/CML (12 kHz20 MHz) | - | 0.5 | - | ps |
| Phase Jitter (RMS Random) | CMOS 3.3 V (12 kHz20 MHz) | - | 0.6 | - | ps |
| Power Supply Rejection (Additive Jitter) | LVPECL, 100 mVp-p @ 100 kHz | - | 0.32 | - | ps |
| Supply Voltage | 1.8 V Option | 1.71 | 1.8 | 1.89 | V |
| Supply Voltage | 2.5 V Option | 2.25 | 2.5 | 2.75 | V |
| Supply Voltage | 3.3 V Option | 2.97 | 3.3 | 3.63 | V |
| Supply Current | LVPECL | - | - | 130 | mA |
| Supply Current | CMOS | - | - | 100 | mA |
| Output Enable (OE) VIH | - | 0.75 x VDD | - | - | V |
| Output Enable (OE) VIL | - | - | - | 0.5 | V |
| Operating Temperature Range | - | -40 | - | 85 | C |
| Power-up Time (tOSC) | - | - | - | 10 | ms |
| VC Control Voltage Tuning Slope (KV) | Typ. values | - | 45 to 380 | - | ppm/V |
| VC Control Voltage Linearity (LVC) | - | -5 | 1 | +5 | % |
| VC Modulation Bandwidth (BW) | - | 9.3 | 10.0 | 10.7 | kHz |
| I2C Interface Speed | Fast Mode | - | - | 400 | kbps |
| Output Dividers (HS_DIV) | - | - | (4, 5, 6, 7, 9, 11) | - | - |
| Output Dividers (N1) | - | - | (1, 2, 4, ..., 128) | - | - |
| Total Stability (Si598) | 20 ppm Temp Stability | - | - | 30 | ppm |
| Total Stability (Si598) | 50 ppm Temp Stability | - | - | 100 | ppm |
| Temperature Stability (Si599) | -40 to +85 C | -20 | - | +20 | ppm |
| Absolute Pull Range (Si599) | - | 10 | - | 370 | ppm |
2412231819_SKYWORKS-598BCA002446DG_C22248159.pdf
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