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 uses a single fixed crystal to generate a wide range of output frequencies, ensuring exceptional frequency stability and reliability. Its DSPLL clock synthesis offers superior supply noise rejection, simplifying clock generation in noisy communication system environments. The Si535/536 is factory programmed, eliminating long lead times associated with custom oscillators.
Product Attributes
- Brand: Skyworks Solutions, Inc.
- Technology: DSPLL circuitry
- Package: Industry-standard 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. Moisture Sensitivity Level J-STD-020, MSL1.
- Contact Pads: Gold over Nickel
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 | ||
| 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 (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 | ||
| CLK Output Levels and Symmetry | ||||||
| LVPECL Mid-level Output | VO | VDD 1.42 | VDD 1.25 | V | ||
| LVPECL Differential Swing | VOD | 1.1 | 1.9 | VPP | ||
| LVDS Mid-level Output | VO | 1.125 | 1.20 | 1.275 | V | |
| LVDS Differential Swing | VOD | 0.5 | 0.7 | 0.9 | VPP | |
| Rise/Fall time (20/80%) | tR, tF | 350 | ps | |||
| Symmetry (duty cycle) Differential | SYM | 45 | 55 | % | ||
| CLK Output 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 | |
| CLK Output Period Jitter | ||||||
| Period Jitter (RMS) | JPER | N = 1000 cycles | 2 | ps | ||
| Period Jitter (Peak-to-Peak) | JPER | 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 (mm) | ||||||
| Dimension | Min | Nom | Max | |||
| 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 (mm) | ||||||
| Dimension | Min | |||||
| 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
Models & Part Number Convention
Models: Si535, Si536
Part Number Convention Example: 535AB156M250DGR indicates a 5x7 XO, 6-pad package, 156.250 MHz frequency, 3.3 V supply, LVPECL output, Output Enable active high polarity, 20 ppm temperature stability, 40 to +85 C ambient temperature range, and shipped in tape and reel.
Available Frequencies: 100 MHz to 312.5 MHz (e.g., 100M000, 106M250, 125M000, 150M000, 155M520, 156M250, 156.2578 MHz, 156.2539 MHz, 156.26953 MHz, 161.1328 MHz, 166.6286 MHz, 167.3316 MHz, 159M375, 212M500, 312M500).
Option Codes:
- VDD: 3 (3.3 V), E (2.5 V)
- Output Format: A (LVPECL), B (LVDS)
- Output Enable Polarity: High (default)
- Temperature Stability (ppm, max, ): B (20 ppm), C (7 ppm)
- Total Stability (ppm, max, ): B (31.5 ppm), C (20 ppm)
- Operating Temp Range (C): G (-40 to +85 C)
- Packaging: D (Tape & Reel), G (Coil Tape)
Pinout Differences: Si536 Series supports an alternate OE pinout (pin #1) compared to Si535 Series (pin #2).
2411272144_SKYWORKS-536BC100M000DG_C17576518.pdf
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