Low Jitter Crystal Oscillator SKYWORKS 591NB-DDG Featuring DSPLL Circuitry for Communication Systems
Product Overview
The Skyworks Si590/591 is a crystal oscillator (XO) utilizing advanced DSPLL circuitry to deliver low jitter clock signals at high frequencies, ranging from 10 MHz to 810 MHz. Unlike traditional XOs requiring a unique crystal for each frequency, this IC-based solution uses a single fixed crystal for broad frequency output, ensuring exceptional stability and reliability. Its DSPLL clock synthesis offers superior supply noise rejection, making it ideal for low-jitter clock generation in noisy communication system environments. The Si590/591 is factory configurable for frequency, supply voltage, output format, and stability, with custom configurations programmed at shipment to minimize lead times.
Product Attributes
- Brand: Skyworks Solutions, Inc.
- Technology: DSPLL circuitry
- Certifications: Pb-free/RoHS-compliant
Technical Specifications
| Parameter | Symbol | Min | Typ | Max | Units | Notes |
|---|---|---|---|---|---|---|
| Electrical Specifications | ||||||
| Supply Voltage (3.3 V option) | VDD | 2.97 | 3.3 | 3.63 | V | Selectable parameter |
| Supply Voltage (2.5 V option) | VDD | 2.25 | 2.5 | 2.75 | V | Selectable parameter |
| Supply Voltage (1.8 V option) | VDD | 1.71 | 1.8 | 1.89 | V | Selectable parameter |
| Supply Current (LVPECL, Output enabled) | IDD | 110 | 125 | mA | ||
| Supply Current (CMOS, Output enabled) | IDD | 80 | 90 | mA | ||
| Supply Current (Tristate mode) | IDD | 60 | 75 | mA | ||
| Output Enable VIH | VIH | 0.75 x VDD | V | Internal pullup/pulldown resistor | ||
| Output Enable VIL | VIL | 0.5 | V | Internal pullup/pulldown resistor | ||
| Operating Temperature Range | TA | 40 | 85 | C | ||
| Output Frequency Characteristics | ||||||
| Nominal Frequency (LVPECL/LVDS/CML) | fO | 10 | 810 | MHz | Specified by part number | |
| Nominal Frequency (CMOS) | fO | 10 | 160 | MHz | Specified by part number | |
| Initial Accuracy | fi | 1.5 | ppm | Measured at +25 C | ||
| Total Stability (Option D) | 20 | ppm | Includes initial, temp, shock, vibration, supply, load, aging | |||
| Total Stability (Option C) | 30 | ppm | Includes initial, temp, shock, vibration, supply, load, aging | |||
| Total Stability (Option B) | 50 | ppm | Includes initial, temp, shock, vibration, supply, load, aging | |||
| Total Stability (Option A) | 100 | ppm | Includes initial, temp, shock, vibration, supply, load, aging | |||
| Temperature Stability (Option D) | 7 | ppm | ||||
| Temperature Stability (Option C) | 20 | ppm | ||||
| Temperature Stability (Option B) | 25 | ppm | ||||
| Temperature Stability (Option A) | 50 | ppm | ||||
| Powerup Time | tOSC | 10 | ms | From powerup or tristate | ||
| Output Levels and Symmetry | ||||||
| LVPECL Output Mid-level | VO | VDD 1.42 | VDD 1.25 | V | 50 to VDD 2.0 V | |
| LVPECL Output Differential Swing | VOD | 1.1 | 1.9 | VPP | ||
| LVDS Output Mid-level | VO | 1.125 | 1.20 | 1.275 | V | |
| LVDS Output Differential Swing | VOD | 0.5 | 0.7 | 0.9 | VPP | Rterm = 100 |
| CML Output Differential Swing (2.5/3.3 V) | VOD | 1.10 | 1.50 | 1.90 | VPP | Rterm = 100 |
| CMOS Output VIH | VOH | 0.8 x VDD | VDD | V | CL = 15 pF | |
| CMOS Output VOL | VOL | 0.4 | V | CL = 15 pF | ||
| Rise/Fall Time (LVPECL/LVDS/CML) | tR, tF | 350 | ps | |||
| Rise/Fall Time (CMOS, CL=15pF) | tR, tF | 2 | ns | |||
| Symmetry (Duty Cycle) | SYM | 45 | 55 | % | See notes | |
| Output Phase Jitter | ||||||
| Phase Jitter RMS (LVPECL/LVDS/CML, 12 kHz-20 MHz) | J | 0.5 | 1.0 | ps | 50 MHz < FOUT < 810 MHz | |
| Phase Jitter RMS (LVPECL/LVDS/CML, 155.52 MHz) | J | 0.4 | 0.7 | ps | 12 kHz to 20 MHz | |
| Phase Jitter RMS (CMOS, 12 kHz-20 MHz) | J | 0.6 | 1.0 | ps | 50 MHz < FOUT < 160 MHz | |
| Output Period Jitter | ||||||
| Period Jitter RMS | JPER | 3 | ps | N = 1000 cycles | ||
| Period Jitter Peak-to-Peak | JPER | 35 | ps | Any output mode | ||
| Environmental Compliance and Package Information | ||||||
| Contact Pads | Gold over Nickel | |||||
| Thermal Characteristics (Typical values TA = 25 C, VDD = 3.3 V) | ||||||
| Thermal Resistance Junction to Ambient (5x7mm) | JA | 84.6 | C/W | Still Air | ||
| Thermal Resistance Junction to Case (5x7mm) | JC | 38.8 | C/W | Still Air | ||
| Thermal Resistance Junction to Ambient (3.2x5mm) | JA | 31.1 | C/W | Still Air | ||
| Thermal Resistance Junction to Case (3.2x5mm) | JC | 13.3 | C/W | Still Air | ||
| Ambient Temperature | TA | 40 | 85 | C | ||
| Junction Temperature | TJ | 125 | C | |||
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