AD9518-4
6-Output Clock Generator with Integrated 1.6 GHz VCO
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Features
- Low phase noise, phase-locked loop (PLL)
- On-chip VCO tunes from 1.45 GHz to 1.80 GHz
- External VCO/VCXO to 2.4 GHz optional
- 1 differential or 2 single-ended reference inputs
- Reference monitoring capability
- Automatic revertive and manual reference switchover/holdover modes
- Accepts LVPECL, LVDS, or CMOS references to 250 MHz Programmable delays in path to PFD
- Digital or analog lock detect, selectable
- 3 pairs of 1.6 GHz LVPECL outputs
- Each output pair shares a 1-to-32 divider with coarse phase delay
- Additive output jitter: 225 fs rms
- Channel-to-channel skew paired outputs of <10 ps Automatic synchronization of all outputs on power-up
- Manual output synchronization available
- Available in a 48-lead LFCSP
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The AD9518-41 The AD9518-41 provides a multi-output clock distribution function with subpicosecond jitter performance, along with an on-chip PLL and VCO. The on-chip VCO tunes from 1.45 GHz to 1.80 GHz. Optionally, an external VCO/VCXO of up to 2.4 GHz can be used.
The AD9518-4 emphasizes low jitter and phase noise to maximize data converter performance, and it can benefit other applications with demanding phase noise and jitter requirements.
The AD9518-4 features six LVPECL outputs (in three pairs). The LVPECL outputs operate to 1.6 GHz.
For applications that require additional outputs, a crystal reference input, zero-delay, or EEPROM for automatic configuration at startup, the AD9520 and AD9522 are available.
In addition, the AD9516 and AD9517 are similar to the AD9518 but have a different combination of outputs.
Each pair of outputs has dividers that allow both the divide ratio and coarse delay (or phase) to be set. The range of division for the LVPECL outputs is 1 to 32.
The AD9518-4 is available in a 48-lead LFCSP and can be operated from a single 3.3 V supply. An external VCO, which requires an extended voltage range, can be accommodated by connecting the charge pump supply (VCP) to 5 V. A separate LVPECL power supply can be from 2.5 V to 3.3 V (nominal).
The AD9518-4 is specified for operation over the industrial range of −40°C to +85°C.
APPLICATIONS- Low jitter, low phase noise clock distribution
- 10/40/100 Gb/sec networking line cards, including SONET, Synchronous Ethernet, OTU2/3/4
- Forward error correction (G.710)
- Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
- High performance wireless transceivers
- ATE and high performance instrumentation
1AD9518 is used throughout the data sheet to refer to all the members of the AD9518 family. However, when AD9518-4 is used, it refers to that specific member of the AD9518 family.
Ask a Question
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Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.
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AD9518-4
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Data Sheet 1
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Application Note 10
AN-769: Generating Multiple Clock Outputs from the AD9540 (Rev.0)
AN-823: Direct Digital Synthesizers in Clocking Applications Time (Rev.0)
AN-927: Determining if a Spur is Related to the DDS/DAC or to Some Other Source (For Example, Switching Supplies) (Rev.0)
AN-939: Super-Nyquist Operation of the AD9912 Yields a High RF Output Signal (Rev.0)
AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter (Rev.0)
AN-0974: Multicarrier TD-SCMA Feasibility (Rev.0)
AN-873: Lock Detect on the ADF4xxx Family of PLL Synthesizers (Rev.0)
AN-741: Little Known Characteristics of Phase Noise (Rev.0)
AN-501: Aperture Uncertainty and ADC System Performance (Rev.A)
AN-835: Understanding High Speed ADC Testing and Evaluation
Technical Articles 6
Understand the Effects of Clock Jitter and Phase Noise on Sampled Systems
ADI Buys Korean Mobile TV Chip Maker
Speedy A/Ds Demand Stable Clocks
Design A Clock-Distribution Strategy With Confidence
Low-power direct digital synthesizer cores enable high level of integration
Improved DDS Devices Enable Advanced Comm Systems
Frequently Asked Question 1
Device Drivers 1
Product Selection Guide 1
Rarely Asked Question Page 12
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD9518-4ABCPZ |
48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)
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| AD9518-4ABCPZ-RL7 |
48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)
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| AD9518-4BCPZ |
48-Lead LFCSP (7mm x 7mm w/ EP)
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| AD9518-4BCPZ-REEL7 |
48-Lead LFCSP (7mm x 7mm w/ EP)
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- AD9518-4ABCPZ
- Pin/Package Drawing
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48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
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SamacSys
- AD9518-4ABCPZ-RL7
- Pin/Package Drawing
-
48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- AD9518-4BCPZ
- Pin/Package Drawing
-
48-Lead LFCSP (7mm x 7mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- AD9518-4BCPZ-REEL7
- Pin/Package Drawing
-
48-Lead LFCSP (7mm x 7mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
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SamacSys
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Part Models
Product Lifecycle
PCN
Jun 9, 2021
- 20_0126
Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea
AD9518-4ABCPZ
PRODUCTION
AD9518-4ABCPZ-RL7
PRODUCTION
Sep 13, 2017
- 16_0077
CANCELLED: Conversion of Select 4x4, 5x5, 6x6 and 7x7mm LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE Korea.
AD9518-4ABCPZ
PRODUCTION
AD9518-4ABCPZ-RL7
PRODUCTION
Aug 21, 2009
- 09_0156
Moisture Sensitivity Level (MSL) change for select devices packaged in 7x7mm, 8x8mm, and 9x9mm LFCSP packages. Introduction of new models on all affected devices indicated by a revision letter in the model part number.
AD9518-4BCPZ
Obsolete
AD9518-4BCPZ-REEL7
Obsolete
Mar 12, 2010
- 10_0031
Discontinuation and replacement of select models of generics as listed herein.
AD9518-4BCPZ
Obsolete
AD9518-4BCPZ-REEL7
Obsolete
Filter by Model
Part Models
Product Lifecycle
PCN
Jun 9, 2021
- 20_0126
Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea
AD9518-4ABCPZ
PRODUCTION
AD9518-4ABCPZ-RL7
PRODUCTION
Sep 13, 2017
- 16_0077
CANCELLED: Conversion of Select 4x4, 5x5, 6x6 and 7x7mm LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE Korea.
AD9518-4ABCPZ
PRODUCTION
AD9518-4ABCPZ-RL7
PRODUCTION
Aug 21, 2009
- 09_0156
Moisture Sensitivity Level (MSL) change for select devices packaged in 7x7mm, 8x8mm, and 9x9mm LFCSP packages. Introduction of new models on all affected devices indicated by a revision letter in the model part number.
AD9518-4BCPZ
Obsolete
AD9518-4BCPZ-REEL7
Obsolete
Mar 12, 2010
- 10_0031
Discontinuation and replacement of select models of generics as listed herein.
Software & Part Ecosystem
Device Drivers
Looking for Evaluation Software? You can find it here
Evaluation Kits 1
EVAL-AD9518-4
AD9518-4 Evaluation Board
Features and Benefits
- Simple power connection using 6 V wall adapter and on-board LDO voltage regulators
- LDOs are easily bypassed for power measurements
- 8 ac-coupled differential LVPECL SMA connectors
- 2 ac-coupled LVPECL differential headers
- 2 dc-coupled differential LVDS SMA connectors that are reconfigurable to four CMOS SMA connectors
- 2 dc-coupled LVDS differential headers that are reconfigurable to four CMOS connectors
- SMA connectors for
- 2 reference inputs
- Charge pump output
- Clock distribution input
- USB connection to PC
- Microsoft Windows-based evaluation software with simple graphical user interface
- On-board PLL loop filter
- Easy access to digital I/O and diagnostic signals via I/O header
- Status LEDs for diagnostic signals
Product Detail
The AD9516-x, AD9517-x, and AD9518-x are very low noise PLL clock synthesizers featuring an integrated VCO, clock dividers, and up to 14 outputs. The AD9516 features automatic holdover and a flexible reference input circuit allowing for very smooth reference clock switching. The AD9516 family also features the necessary provisions for an external VCXO.
The AD9516 evaluation board is a compact, easy-to-use platform for evaluating all features of the AD9516. The AD9516, AD9517, and AD9518 differ only in package size, and the number of outputs. The evaluation software main window for the AD9517 and AD9518 reflects fewer outputs, but the operation is identical for all devices.
Resources
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Evaluation Kits1
Tools & Simulations 2
IBIS Model 1
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ADIsimCLK Design and Evaluation Software
