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, it uses one fixed crystal for a wide range of output frequencies, offering exceptional frequency stability and reliability. Its IC-based approach and DSPLL clock synthesis provide superior supply noise rejection, simplifying low jitter clock generation in noisy communication system environments. The Si535/536 is factory programmed, eliminating long lead times. It is available with select frequencies from 100 MHz to 312.5 MHz, with LVPECL and LVDS outputs, and 3.3 and 2.5 V supply options in an industry-standard 5 x 7 mm package.
Product Attributes
- Brand: Skyworks Solutions, Inc.
- Technology: DSPLL circuitry
- Certifications: Pb-free/RoHS-compliant
- Package: 5 x 7 mm
- Material: Gold over Nickel contact pads
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 | ||||
| Output Enable (OE) | VIH/VIL | 0.75 x VDD | 0.5 | V | OE pin includes a 17 k pullup resistor to VDD. | ||
| Operating Temperature Range | TA | -40 | 85 | C | |||
| Nominal Frequency | fO | LVPECL/LVDS | 100 | 312.5 | MHz | See Section 3. "Ordering Information" for available frequencies. | |
| Initial Accuracy | Measured at +25 C at time of shipping | 1.5 | ppm | ||||
| Temperature Stability | -7 | +7 | ppm | Selectable parameter specified by part number. | |||
| -20 | +20 | ppm | Selectable parameter specified by part number. | ||||
| Aging | fa | Frequency drift over first year | 3 | ppm | |||
| 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 | Time from powerup or tristate mode to fO. | ||
| LVPECL Output Mid-level | VO | 50 to VDD 2.0 V | VDD 1.42 | VDD 1.25 | V | ||
| LVDS Output Mid-level | 1.125 | 1.20 | 1.275 | V | Rterm = 100 (differential). | ||
| Output Swing (Differential) | VOD | LVPECL | 1.1 | 1.9 | VPP | ||
| LVDS | 0.5 | 0.7 | 0.9 | VPP | |||
| Rise/Fall time (20/80%) | tR, tF | 350 | ps | ||||
| Symmetry (duty cycle) | SYM | Differential | 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 (RMS) | JPER | N = 1000 cycles | 2 | ps | |||
| Peak-to-Peak | 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 | ||||
| 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 | 20 | 40 | seconds |
2508281722_SILICON-LABS-535AB000305DGR_C2030260.pdf
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