AD9520-1/PCBZ Analog Devices Inc, AD9520-1/PCBZ Datasheet - Page 2

• Manufacturer Part Number: AD9520-1/PCBZ
• Description: BOARD EVAL FOR AD9520-1
• Manufacturer: Analog Devices Inc

Specifications of AD9520-1/PCBZ

• Design Resources: Synchronizing Multiple AD9910 1 GSPS Direct Digital Synthesizers (CN0121) Phase Coherent FSK Modulator (CN0186)
• Main Purpose: Timing, Clock Generator
• Embedded: No
• Utilized Ic / Part: AD9520-1
• Primary Attributes: 12 LVPECL/24 CMOS Output Clock Generator with 2.5 GHz VCO
• Secondary Attributes: SPI and I2C Compatible Control Port
• Silicon Manufacturer: Analog Devices
• Application Sub Type: PLL Clock Synthesizer
• Kit Application Type: Clock & Timing
• Silicon Core Number: AD9520-0, AD9520-2, AD9520-2
• Silicon Family Name: AD9520-X
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD9520-1
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
Specifications ..................................................................................... 4
Absolute Maximum Ratings .......................................................... 17
Pin Configuration and Function Descriptions ........................... 18
Typical Performance Characteristics ........................................... 21
Terminology .................................................................................... 26
Detailed Block Diagram ................................................................ 27
Power Supply Requirements ....................................................... 4
PLL Characteristics ...................................................................... 4
Clock Inputs .................................................................................. 7
Clock Outputs ............................................................................... 7
Timing Characteristics ................................................................ 8
Clock Output Additive Phase Noise (Distribution Only;
VCO Divider Not Used) ............................................................ 10
Clock Output Absolute Phase Noise (Internal VCO Used) .. 11
Clock Output Absolute Time Jitter (Clock Generation
Using Internal VCO) .................................................................. 11
Clock Output Absolute Time Jitter (Clock Cleanup
Using Internal VCO) .................................................................. 11
Clock Output Absolute Time Jitter (Clock Generation
Using External VCXO) .............................................................. 12
Clock Output Additive Time Jitter
(VCO Divider Not Used) .......................................................... 12
Clock Output Additive Time Jitter (VCO Divider Used) ..... 13
Serial Control Port—SPI Mode ................................................ 13
Serial Control Port—I2C Mode ................................................ 14
PD , SYNC , and RESET Pins ..................................................... 15
Serial Port Setup Pins: SP1, SP0 ............................................... 15
LD, STATUS, and REFMON Pins ............................................ 15
Power Dissipation ....................................................................... 16
Thermal Resistance .................................................................... 17
ESD Caution ................................................................................ 17
Timing Diagrams ..................................................................... 9
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Theory of Operation ...................................................................... 28
Operational Configurations ...................................................... 28
Zero Delay Operation ................................................................ 43
Clock Distribution ..................................................................... 44
Mode 0: Internal VCO and Clock Distribution ................. 28
Mode 1: Clock Distribution or External
VCO < 1600 MHz .................................................................. 30
Mode 2: High Frequency Clock Distribution—CLK or
External VCO > 1600 MHz .................................................. 32
Phase-Locked Loop (PLL) .................................................... 34
Configuration of the PLL ...................................................... 34
Phase Frequency Detector (PFD) ........................................ 34
Charge Pump (CP) ................................................................. 35
On-Chip VCO ........................................................................ 35
PLL External Loop Filter ....................................................... 35
PLL Reference Inputs ............................................................. 35
Reference Switchover ............................................................. 36
Reference Divider R ............................................................... 36
VCO/VCXO Feedback Divider N: P, A, B, R ..................... 36
Digital Lock Detect (DLD) ................................................... 38
Analog Lock Detect (ALD) ................................................... 38
Current Source Digital Lock Detect (CSDLD) .................. 38
External VCXO/VCO Clock Input (CLK/ CLK ) ................ 39
Holdover .................................................................................. 39
External/Manual Holdover Mode ........................................ 39
Automatic/Internal Holdover Mode .................................... 39
Frequency Status Monitors ................................................... 41
VCO Calibration .................................................................... 42
Internal Zero Delay Mode ..................................................... 43
External Zero Delay Mode .................................................... 43
Operation Modes ................................................................... 44
CLK or VCO Direct-to-LVPECL Outputs .......................... 44
Clock Frequency Division ..................................................... 45
VCO Divider ........................................................................... 45
Channel Dividers ................................................................... 45
Synchronizing the Outputs— SYNC Function ................... 47
LVPECL Output Drivers ....................................................... 49
CMOS Output Drivers .......................................................... 49