Skyworks Si535/536 ULTRA LOW JITTER CRYSTAL OSCILLATOR (XO)
The Si535/536 XO utilizes Skyworks Solutions advanced DSPLL circuitry to provide an ultra low jitter clock at high-speed differential frequencies. Unlike traditional XOs requiring a different crystal for each output frequency, the Si535/536 uses one fixed crystal to achieve a wide range of output frequencies. This IC-based approach ensures exceptional frequency stability and reliability. The DSPLL clock synthesis offers superior supply noise rejection, simplifying the generation of low jitter clocks in noisy communication system environments. The Si535/536 IC-based XO is factory programmed, eliminating long lead times associated with custom oscillators.
Product Attributes
- Brand: Skyworks Solutions, Inc.
- Certifications: Pb-free/RoHS-compliant
Technical Specifications
| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit | Notes |
| Supply Voltage | VDD | 3.3 V option | 2.97 | 3.3 | 3.63 | V | Selectable parameter specified by part number. |
| 2.5 V option | 2.25 | 2.5 | 2.75 | V | Selectable parameter specified by part number. | ||
| Supply Current | IDD | Output enabled LVPECL | 111 | 121 | mA | ||
| Output enabled LVDS | 90 | 98 | mA | ||||
| Tristate mode Supply Current | IDD | 60 | 75 | mA | |||
| Output Enable (OE) VIH | VIH | 0.75 x VDD | V | OE pin includes a 17 k pullup resistor to VDD. | |||
| Output Enable (OE) VIL | VIL | 0.5 | V | OE pin includes a 17 k pullup resistor to VDD. | |||
| Operating Temperature Range | TA | 40 | 85 | C | |||
| Output Frequency Characteristics | fO | LVPECL/LVDS | 100 | 312.5 | MHz | See Section 3. "Ordering Information" for available frequencies. | |
| Initial Accuracy @ +25 C | fi | 1.5 | ppm | Measured at time of shipping. | |||
| Temperature Stability | 7 | +7 | ppm | Selectable parameter specified by part number. | |||
| Total Stability (Temp stability = 7 ppm) | 20 | ppm | |||||
| Powerup Time | tOSC | TA = 40C to +85C | 10 | ms | Time from powerup or tristate mode to fO. | ||
| LVPECL Output Levels | VO | Mid-level | VDD 1.42 | VDD 1.25 | V | 50 to VDD 2.0 V. | |
| Swing (diff) | 1.1 | 1.9 | VPP | 50 to VDD 2.0 V. | |||
| LVDS Output Levels | VO | Mid-level | 1.125 | 1.20 | 1.275 | V | Rterm = 100 (differential). |
| Swing (diff) | 0.5 | 0.7 | 0.9 | VPP | Rterm = 100 (differential). | ||
| Rise/Fall time (20/80%) | tR, tF | 350 | ps | ||||
| Symmetry (duty cycle) Differential | SYM | 45 | 55 | % | |||
| Phase Jitter* (RMS) | J | 10 kHz to 1 MHz (data center) | 0.19 | 0.35 | ps | Applies to output frequencies: 156.25 MHz. | |
| 12 kHz to 20 MHz brickwall | 0.25 | 0.40 | ps | Applies to output frequencies: 156.25 MHz. | |||
| Period Jitter* | JPER | RMS (N = 1000 cycles) | 2 | ps | |||
| Peak-to-Peak (N = 1000 cycles) | 14 | ps | |||||
| Thermal Resistance Junction to Ambient | JA | Still Air | 84.6 | C/W | Typical values TA = 25 C, VDD = 3.3 V | ||
| Thermal Resistance Junction to Case | JC | Still Air | 38.8 | C/W | Typical values TA = 25 C, VDD = 3.3 V | ||
| Ambient Temperature | TA | 40 | 85 | C | |||
| Junction Temperature | TJ | 125 | C |
2508281722_SILICON-LABS-536EB155M520DGR_C2029885.pdf
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