AD9520-3BCPZ-REEL7 Analog Devices Inc, AD9520-3BCPZ-REEL7 Datasheet - Page 2
![12/24 Channel Clock Distribution W/ On-C](/photos/6/50/65021/505-64-lfcsp_sml.jpg)
AD9520-3BCPZ-REEL7
Manufacturer Part Number
AD9520-3BCPZ-REEL7
Description
12/24 Channel Clock Distribution W/ On-C
Manufacturer
Analog Devices Inc
Type
Clock Generator, Fanout Distributionr
Datasheet
1.AD9520-3BCPZ.pdf
(84 pages)
Specifications of AD9520-3BCPZ-REEL7
Design Resources
Synchronizing Multiple AD9910 1 GSPS Direct Digital Synthesizers (CN0121) Phase Coherent FSK Modulator (CN0186)
Pll
Yes
Input
CMOS, LVDS, LVPECL
Output
CMOS, LVPECL
Number Of Circuits
1
Ratio - Input:output
2:12, 2:24
Differential - Input:output
Yes/Yes
Frequency - Max
2.25GHz
Divider/multiplier
Yes/No
Voltage - Supply
3.135 V ~ 3.465 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
64-LFCSP
Frequency-max
2.25GHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
AD9520-3
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
Theory of Operation ...................................................................... 28
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)
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
Operational Configurations ...................................................... 28
....................................................................................................... 12
Timing Diagrams ..................................................................... 9
Mode 0: Internal VCO and Clock Distribution ................. 28
Rev. 0 | Page 2 of 84
Zero Delay Operation ................................................................ 43
Clock Distribution ..................................................................... 44
Reset Modes ................................................................................ 49
Power-Down Modes .................................................................. 50
Mode 1: Clock Distribution or External VCO < 1600 MHz
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
VCXO/VCO 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
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
Power-On Reset ...................................................................... 49
Hardware Reset via the RESET Pin ..................................... 49
Soft Reset via the Serial Port ................................................. 50
Soft Reset to Settings in EEPROM when EEPROM Pin = 0 via
the Serial Port ......................................................................... 50
.................................................................................................. 30