Data Sheet
AD9520-4
Rev. A | Page 3 of 80
REVISION HISTORY
8/13—Rev. 0 to Rev. A
Changes to Features Section, Applications Section, and
General Description Section............................................................1
Changes to Table 2 ............................................................................4
Changes to Input Frequency Parameter and Input Sensitivity,
Differential Parameter Test Conditions/Comments, Table 3......7
Change to Output Differential Voltage, VOD Parameter Test
Conditions/Comments; Added Source Current and Sink
Current Parameters, Table 4 ............................................................7
Change to Output Skew, LVPECL Outputs Parameter Test
Conditions/Comments, Table 5 ......................................................8
Reordered Figure 2 to Figure 4........................................................9
Change to Reset Timing, Pulse Width Low Parameter, Table 15...15
Change to Maximum Power, Full Operation Parameter,
Internal VCO Value in Test Conditions/Comments, Table 18.... 16
Change to Junction Temperature, Table 19; Reformatted
Table 19.............................................................................................17
Changes to Table 21 ........................................................................18
Deleted Figure 13, Renumbered Sequentially .............................22
Reordered Figure 31 and Figure 32; Added Figure 33,
Renumbered Sequentially ..............................................................25
Change to Mode 0—Internal VCO and Clock Distribution
Section ..............................................................................................28
Change to Configuration of the PLL Section; Changes
to Charge Pump (CP) Section .......................................................34
Changes to On-Chip VCO Section and PLL External Loop
Filter Section; Added Figure 40, Figure 41, and Figure 42;
Changes to PLL Reference Inputs Section ...................................35
Changes to Reference Switchover Section ...................................36
Change to Prescaler Section; Changes to A and B Counters
Section, Changes to Table 29 .........................................................37
Changes to Current Source Digital Lock Detect (CSDLD)
Section ..............................................................................................38
Changes to Holdover Mode Section.............................................39
Changes to Frequency Status Monitors Section and VCO
Calibration Section .........................................................................41
Added Table 31, Renumbered Sequentially; Change to
Internal Zero Delay Mode Section................................................42
Changes to External Zero Delay Mode Section ..........................43
Change to Clock Frequency Division Section and VCO
Divider Section; Added Channel Divider Maximum
Frequency Section...........................................................................45
Reformatted Table 36 to Table 39..................................................46
Change to Phase Offset or Coarse Time Delay Section.............47
Change to LVPECL Output Drivers Section; Changes to
CMOS Output Drivers Section; Change to Power-On Reset
Section ..............................................................................................49
Changes to Soft Reset via the Serial Port Section and Soft
Reset to Settings in EEPROM When EEPROM Pin = 0b
via the Serial Port Section ..............................................................50
Change to Pin Descriptions Section, SPI Mode Operation
Section, and Write Section.............................................................54
Changes to SPI Instruction Word (16 Bits) Section ...................55
Changes to EEPROM Operations Section, Writing to the
EEPROM Section, and Reading from the EEPROM Section ...58
Changes to Programming the EEPROM Buffer Segment
Section, Register Section Definition Group Section; Added
Operational Codes Section Heading............................................59
Changes to Table 50 ........................................................................61
Added Unused Bits to Register Map Descriptions Section;
Changes to Address 0x000, Bit 5, and Added Address 0x003,
Table 51; Changes to Address 0x000, Bit 5, and Added
Address 0x003, Table 52.................................................................64
Changes to Address 0x017, Bits[7:2], Table 54............................66
Changes to Address 0x018, Bit 4 and Bits[2:1], Table 54...........67
Changes to Address 0x01B, Bits[4:0], Setting 01101, Table 54 ....69
Changes to Address 0x191, Bit 5, and Address 0x194, Bit 5,
Table 56.............................................................................................72
Changes to Address 0x197, Bit 5, Table 56 ..................................73
Changes to Address 0x19A, Bit 5, Table 56 .................................74
Changes to Table 60 ........................................................................75
Changes to Address 0xB02, Bit 0, and Address 0xB03, Bit 0,
Table 61.............................................................................................76
Change to Frequency Planning Using the AD9520 Section .....77
Added LVPECL Y-Termination and Far-End Thevenin
Termination Headings; Change to LVPECL Y-Termination
Section; Changes to CMOS Clock Distribution Section ...........78
8/08—Revision 0: Initial Version