Product Overview
The Skyworks Si535/536 Ultra Low Jitter Crystal Oscillator (XO) leverages advanced DSPLL circuitry to deliver ultra-low jitter clocks at high-speed differential frequencies. Unlike traditional XOs, this IC-based solution utilizes a single fixed crystal to generate a wide range of output frequencies, ensuring exceptional frequency stability and reliability. Its DSPLL clock synthesis provides superior supply noise rejection, simplifying the generation of low-jitter clocks in noisy communication system environments. The Si535/536 is factory programmed, eliminating long lead times associated with custom oscillators, and is available in a 5 x 7 mm package with LVPECL and LVDS output options, supporting 3.3 V and 2.5 V supply voltages.
Product Attributes
- Brand: Skyworks Solutions, Inc.
- Technology: DSPLL circuitry
- Package: 5 x 7 mm
- Compliance: Pb-free/RoHS-compliant
- Certifications: Meets MIL-STD-883 qualification test requirements for Mechanical Shock, Mechanical Vibration, Solderability, Gross & Fine Leak, Resistance to Solder Heat.
- Contact Pads: Gold over Nickel
Technical Specifications
| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Recommended Operating Conditions | ||||||
| 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 | ||
| Supply Current | IDD | Output enabled (LVPECL) | 111 | 121 | mA | |
| Output enabled (LVDS) | 90 | 98 | mA | |||
| Tristate mode | 60 | 75 | mA | |||
| Output Enable (OE) | VIH | 0.75 x VDD | V | |||
| VIL | 0.5 | V | ||||
| Operating Temperature Range | TA | 40 | 85 | C | ||
| CLK Output Frequency Characteristics | ||||||
| Nominal Frequency | fO | LVPECL/LVDS | 100 | 312.5 | MHz | |
| Initial Accuracy | fi | Measured at +25 C at time of shipping | 1.5 | ppm | ||
| Temperature Stability | 7 | 20 | +7, +20 | ppm | ||
| Aging (1st year) | fa | Frequency drift over first year | 3 | ppm | ||
| Aging (20 year) | Frequency drift over 20 year life | 10 | ppm | |||
| Total Stability | Temp stability = 20 ppm | 31.5 | ppm | |||
| Temp stability = 7 ppm | 20 | ppm | ||||
| Powerup Time | tOSC | TA = 40C to +85C | 10 | ms | ||
| CLK Output Levels and Symmetry | ||||||
| LVPECL Output Mid-level | VO | VDD 1.42 | VDD 1.25 | V | ||
| LVPECL Output Swing (diff) | VOD | 1.1 | 1.9 | VPP | ||
| LVPECL Output Swing (Single-ended) | VSE | 0.55 | 0.95 | VPP | ||
| LVDS Output Mid-level | VO | 1.125 | 1.20 | 1.275 | V | |
| LVDS Output Swing (diff) | VOD | 0.5 | 0.7 | 0.9 | VPP | |
| Rise/Fall time (20/80%) | tR, tF | 350 | ps | |||
| Symmetry (duty cycle) | SYM | Differential | 45 | 55 | % | |
| CLK Output Phase Jitter | ||||||
| Phase Jitter* (RMS) | J | 10 kHz to 1 MHz (data center) | 0.19 | 0.35 | ps | |
| 12 kHz to 20 MHz brickwall | 0.25 | 0.40 | ps | |||
| CLK Output Period Jitter | ||||||
| Period Jitter* (RMS) | JPER | N = 1000 cycles | 2 | ps | ||
| N = 1000 cycles | 14 | ps | ||||
| Thermal Characteristics | ||||||
| Thermal Resistance Junction to Ambient | JA | Still Air | 84.6 | C/W | ||
| Thermal Resistance Junction to Case | JC | Still Air | 38.8 | C/W | ||
| Ambient Temperature | TA | 40 | 85 | C | ||
| Junction Temperature | TJ | 125 | C | |||
| Absolute Maximum Ratings | ||||||
| Maximum Operating Temperature | TAMAX | 85 | C | |||
| Supply Voltage, 2.5/3.3 V Option | VDD | 0.5 | +3.8 | V | ||
| Input Voltage (any input pin) | VI | 0.5 | VDD + 0.3 | V | ||
| Storage Temperature | TS | 55 | +125 | C | ||
| ESD Sensitivity (HBM, per JESD22-A114) | ESD | 2500 | V | |||
| Soldering Temperature (Pb-free profile) | TPEAK | 260 | C | |||
| Soldering Temperature Time @ TPEAK (Pb-free profile) | tP | 2040 | seconds | |||
| Package Diagram Dimensions | ||||||
| Dimension | Min | Nom | Max | mm | ||
| A | 1.50 | 1.65 | 1.80 | |||
| b | 1.30 | 1.40 | 1.50 | |||
| c | 0.50 | 0.60 | 0.70 | |||
| D | 5.00 | BSC | ||||
| D1 | 4.30 | 4.40 | 4.50 | |||
| e | 2.54 | BSC | ||||
| E | 7.00 | BSC | ||||
| E1 | 6.10 | 6.20 | 6.30 | |||
| H | 0.55 | 0.65 | 0.75 | |||
| L | 1.17 | 1.27 | 1.37 | |||
| p | 1.80 | 2.60 | ||||
| R | 0.70 | REF | ||||
| aaa | 0.15 | |||||
| bbb | 0.15 | |||||
| ccc | 0.10 | |||||
| ddd | 0.10 | |||||
| eee | 0.05 | |||||
| PCB Land Pattern Dimensions | ||||||
| Dimension | Min | mm | ||||
| C1 | 4.20 | |||||
| E | 2.54 | |||||
| X1 | 1.55 | |||||
| Y1 | 1.95 | |||||
Applications
- 10/40/100G data centers
- 10G Ethernet switches/routers
- Fibre channel/SAS/storage
- Enterprise servers
- Networking
- Telecommunications
2411272144_SKYWORKS-535FB000292DG_C17676481.pdf
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