Datasheet

AD9520-5 Data Sheet
Rev. A | Page 2 of 76
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
Specifications ..................................................................................... 4
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 Time Jitter (Clock Generation
Using External VCXO) .............................................................. 11
Clock Output Additive Time Jitter (VCO Divider
Not Used) ..................................................................................... 11
Clock Output Additive Time Jitter (VCO Divider Used) ..... 12
Serial Control Port—SPI Mode ................................................ 12
Serial Control Port—I²C Mode ................................................ 13
PD
,
SYNC
, EEPROM, and
RESET
Pins .................................. 14
Serial Port Setup Pins—SP1, SP0 ............................................. 14
LD, STATUS, and REFMON Pins ............................................ 14
Power Dissipation ....................................................................... 15
Absolute Maximum Ratings .......................................................... 16
Thermal Resistance .................................................................... 16
ESD Caution ................................................................................ 16
Pin Configuration and Function Descriptions ........................... 17
Typical Performance Characteristics ........................................... 20
Terminology .................................................................................... 24
Detailed Block Diagram ................................................................ 25
Theory of Operation ...................................................................... 26
Operational Configurations ...................................................... 26
Zero Delay Operation ................................................................ 37
Clock Distribution ..................................................................... 38
Reset Modes ................................................................................ 43
Power-Down Modes .................................................................. 44
Serial Control Port ......................................................................... 45
SPI/I²C Port Selection ................................................................ 45
I²C Serial Port Operation .......................................................... 45
SPI Serial Port Operation .......................................................... 48
SPI Instruction Word (16 Bits) ................................................. 49
SPI MSB/LSB First Transfers .................................................... 49
EEPROM Operations ..................................................................... 52
Writing to the EEPROM ........................................................... 52
Reading from the EEPROM ..................................................... 52
Programming the EEPROM Buffer Segment ......................... 53
Thermal Performance .................................................................... 54
Register Map ................................................................................... 55
Register Map Descriptions ............................................................ 58
Applications Information .............................................................. 71
Frequency Planning Using the AD9520 .................................. 71
Using the AD9520 Outputs for ADC Clock Applications .... 71
LVPECL Clock Distribution ..................................................... 72
CMOS Clock Distribution ........................................................ 72
Outline Dimensions ....................................................................... 74
Ordering Guide .......................................................................... 74