Product Overview
The Skyworks Si535/536 is an Ultra Low Jitter Crystal Oscillator (XO) that leverages advanced DSPLL circuitry to deliver high-speed differential frequencies with exceptional stability and reliability. Unlike traditional XOs, it utilizes a single fixed crystal to generate a wide range of output frequencies, simplifying design and reducing lead times. Its IC-based design offers superior supply noise rejection, making it ideal for noisy communication system environments. The Si535/536 is factory programmed, ensuring prompt availability for applications such as 10/40/100G data centers, 10G Ethernet switches/routers, Fibre channel/SAS/storage, enterprise servers, networking, and telecommunications.
Product Attributes
- Brand: Skyworks Solutions, Inc.
- Technology: DSPLL circuitry
- Package: Industry-standard 5 x 7 mm
- Compliance: Pb-free/RoHS-compliant
Technical Specifications
| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Recommended Operating Conditions | ||||||
| Supply Voltage (3.3 V option) | VDD | 2.97 | 3.3 | 3.63 | V | |
| Supply Voltage (2.5 V option) | VDD | 2.25 | 2.5 | 2.75 | V | |
| Supply Current (Output enabled, LVPECL) | IDD | 111 | 121 | mA | ||
| Supply Current (Output enabled, LVDS) | IDD | 90 | 98 | mA | ||
| Supply Current (Tristate mode) | IDD | 60 | 75 | mA | ||
| Output Enable (OE) VIH | VIH | 0.75 x VDD | V | |||
| Output Enable (OE) VIL | VIL | 0.5 | V | |||
| Operating Temperature Range | TA | 40 | 85 | C | ||
| 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 (20 ppm option) | 7 | +7 | ppm | |||
| Temperature Stability (7 ppm option) | 20 | +20 | ppm | |||
| Aging (Frequency drift over first year) | fa | 3 | ppm | |||
| Aging (Frequency drift over 20 year life) | fa | 10 | ppm | |||
| Total Stability (Temp stability = 20 ppm) | 31.5 | ppm | ||||
| Total Stability (Temp stability = 7 ppm) | 20 | ppm | ||||
| Powerup Time | tOSC | TA = 40C to +85C | 10 | ms | ||
| Output Levels and Symmetry | ||||||
| LVPECL Mid-level | VO | 50 to VDD 2.0 V | VDD 1.42 | VDD 1.25 | V | |
| LVPECL Differential Swing | VOD | 1.1 | 1.9 | VPP | ||
| LVDS Differential Swing | VOD | Rterm = 100 (differential) | 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 | ||||||
| Phase Jitter (RMS) | J | 10 kHz to 1 MHz (data center) | 0.19 | 0.35 | ps | |
| Phase Jitter (RMS) | J | 12 kHz to 20 MHz brickwall | 0.25 | 0.40 | ps | |
| Period Jitter | ||||||
| Period Jitter (RMS) | JPER | N = 1000 cycles | 2 | ps | ||
| Period Jitter (Peak-to-Peak) | JPER | N = 1000 cycles | 14 | ps | ||
| Environmental Compliance | ||||||
| Mechanical Shock | MIL-STD-883, Method 2002 | |||||
| Mechanical Vibration | MIL-STD-883, Method 2007 | |||||
| Solderability | MIL-STD-883, Method 2003 | |||||
| Gross & Fine Leak | MIL-STD-883, Method 1014 | |||||
| Resistance to Solder Heat | MIL-STD-883, Method 2036 | |||||
| Moisture Sensitivity Level | J-STD-020, MSL1 | |||||
| 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 | |||
Models
Si535 Series
| Pin | Symbol | Function |
|---|---|---|
| 1 | NC | No connection |
| 2 | OE | Output enable (0 = disabled, 1 = enabled) |
| 3 | GND | Electrical and Case Ground |
| 4 | CLK+ | Oscillator Output |
| 5 | CLK | Complementary Output |
| 6 | VDD | Power Supply Voltage |
Si536 Series
| Pin | Symbol | Function |
|---|---|---|
| 1 | OE | Output enable (0 = disabled, 1 = enabled) |
| 2 | NC | No connection |
| 3 | GND | Electrical and Case Ground |
| 4 | CLK+ | Oscillator Output |
| 5 | CLK | Complementary Output |
| 6 | VDD | Power Supply Voltage |
Ordering Information
The Si535/536 XO series supports various options including frequency, temperature stability, output format, and VDD. The Si536 Series offers an alternate OE pinout (pin #1). All models are RoHS compliant and supplied in a 5 x 7 mm package.
Part Number Convention Example: 535AB156M250DGR
- 53x: Device series (535 or 536)
- A: VDD (3.3 V)
- B: Output Format (LVPECL)
- 156M250: Frequency (156.250 MHz)
- D: Temperature Stability (20 ppm)
- G: Operating Temp Range (C) (-40 to +85 C)
- R: Packaging (Tape & Reel)
Available Frequencies: 100.000 MHz to 312.500 MHz (specific codes provided in datasheet)
Temperature Stability Options: 7 ppm or 20 ppm (max, )
Output Format Options: LVPECL, LVDS
Supply Voltage Options: 2.5 V, 3.3 V
2411272144_SKYWORKS-535FB000175DG_C17529501.pdf
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