AD9520-4BCPZ Clock Generation Devices by Analog Devices

Status: Production
Series: AD9520-4
RoHS: Compliant
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The AD9520-4 provides a multioutput clock distributionfunction with subpicosecond jitter performance, along with anon-chip PLL and VCO. The on-chip VCO tunes from 1.4 GHz to1.8 GHz. An external 3.3 V/5 V VCO/VCXO of up to 2.4 GHzcan also be used.The AD9520-4 serial interface supports both SPI and I²C ports.An in-package EEPROM, which can be programmed through theserial interface, can store user-defined register settings forpower-up and chip reset.The AD9520-4 features 12 LVPECL outputs in four groups. Anyof the 1.6 GHz LVPECL outputs can be reconfigured as two250 MHz CMOS outputs. If an application requires LVDSdrivers instead of LVPECL drivers, refer to the AD9522-4.Each group of three outputs has a divider that allows both thedivide ratio (from 1 to 32) and the phase offset or coarse timedelay to be set.The AD9520-4 is available in a 64-lead LFCSP and can be operatedfrom a single 3.3 V supply. The external VCO can have anoperating voltage of up to 5.5 V. A separate output driver powersupply can be from 2.375 V to 3.465 V.The AD9520-4 is specified for operation over the standardindustrial range of −40°C to +85°C.

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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

Alternative Descriptions

Clock IC with 1.6GHz on-chip V | Analog Devices
Processor Specific Clock Generator 250MHz CMOS | Rapid Electronics
IC, CLOCK GENERATOR, 3.135-3.465V, LFCSP | Farnell
Ic, Clock Generator, 3.135-3.465V, Lfcsp | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD9520-4BCPZ?

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What category does AD9520-4BCPZ fall under?

The AD9520-4BCPZ is listed under Clock Generation Devices.

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Is the AD9520-4BCPZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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