AD9520-4
RECOMMENDED FOR NEW DESIGNS12 LVPECL/24 CMOS Output Clock Generator with Integrated 1.6 GHz VCO
- Part Models
- 2
- 1ku List Price
- Starting From $16.03
Part Details
- Low phase noise, phase-locked loop (PLL)
- On-chip VCO tunes from 1.4 GHz to 1.8 GHz
- Optional external 3.3 V/5 V VCO/VCXO to 2.4 GHz
- 1 differential or 2 single-ended reference inputs
- Accepts CMOS, LVDS, or LVPECL references to 250 MHz
- Accepts 16.62 MHz to 33.3 MHz crystal for reference input
- Optional reference clock doubler
- Reference monitoring capability
- Automatic/manual reference holdover and reference switchover modes, with revertive switching
- Glitch-free switchover between references
- Automatic recovery from holdover
- Digital or analog lock detect, selectable
- Optional zero delay operation
- Twelve 1.6 GHz LVPECL outputs divided into 4 groups
- Each group of 3 outputs shares a 1-to-32 divider with phase delay
- Additive output jitter as low as 225 fs rms
- Channel-to-channel skew grouped outputs < 16 ps
- Each LVPECL output can be configured as 2 CMOS outputs (for fOUT ≤ 250 MHz)
- Automatic synchronization of all outputs on power-up
- Manual output synchronization available
- SPI- and I2C-compatible serial control port
- 64-lead LFCSP
- Nonvolatile EEPROM stores configuration settings
The AD9520-4 provides a multioutput clock distribution function with subpicosecond jitter performance, along with an on-chip PLL and VCO. The on-chip VCO tunes from 1.4 GHz to 1.8 GHz. An external 3.3 V/5 V VCO/VCXO of up to 2.4 GHz can also be used.
The AD9520-4 serial interface supports both SPI and I²C ports. An in-package EEPROM, which can be programmed through the serial interface, can store user-defined register settings for power-up and chip reset.
The AD9520-4 features 12 LVPECL outputs in four groups. Any of the 1.6 GHz LVPECL outputs can be reconfigured as two 250 MHz CMOS outputs. If an application requires LVDS drivers instead of LVPECL drivers, refer to the AD9522-4. Each group of three outputs has a divider that allows both the divide ratio (from 1 to 32) and the phase offset or coarse time delay to be set.
The AD9520-4 is available in a 64-lead LFCSP and can be operated from a single 3.3 V supply. The external VCO can have an operating voltage of up to 5.5 V. A separate output driver power supply can be from 2.375 V to 3.465 V.
The AD9520-4 is specified for operation over the standard industrial range of −40°C to +85°C.
Applications
- Low jitter, low phase noise clock distribution
- Clock generation and translation for SONET, 10Ge, 10GFC, 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
- Broadband infrastructures
Documentation
Data Sheet 1
User Guide 1
Application Note 2
Frequently Asked Question 1
Video 1
Circuit Note 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 |
|---|---|---|---|
| AD9520-4BCPZ | 64-Lead LFCSP (9mm x 9mm w/ EP) | ||
| AD9520-4BCPZ-REEL7 | 64-Lead LFCSP (9mm x 9mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 26, 2023 - 23_0025 Package Outline Drawing and Data Sheet Revision for Select LFCSP Products in Amkor |
||
| AD9520-4BCPZ | PRODUCTION | |
| AD9520-4BCPZ-REEL7 | PRODUCTION | |
|
Nov 7, 2016 - 16_0168 AD9520 Power Dissipation in Power Down spec change |
||
| AD9520-4BCPZ | PRODUCTION | |
| AD9520-4BCPZ-REEL7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
Tools & Simulations
ADIsimCLK Design and Evaluation Software
ADIsimCLK is the design tool developed specifically for Analog Devices' range of ultra-low jitter clock distribution and clock generation products. Whether your application is in wireless infrastructure, instrumentation, networking, broadband, ATE or other areas demanding predictable clock performance, ADIsimCLK will enable you to rapidly develop, evaluate and optimize your design.
Open ToolAD9520-x IBIS Models 1
Evaluation Kits
AD9520-4 Evaluation Board
Resources
Software
Reference Designs
Phase Coherent FSK Modulator