AD9915 AD [Analog Devices], AD9915 Datasheet - Page 2

• Manufacturer Part Number: AD9915
• Description: 2.5 GSPS Direct Digital Synthesizer with 12-Bit DAC
• Manufacturer: AD [Analog Devices]

TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
General Description ......................................................................... 3
Specifications ..................................................................................... 4
Absolute Maximum Ratings ............................................................ 8
Pin Configuration and Function Descriptions ............................. 9
Typical Performance Characteristics ........................................... 12
Equivalent Circuits ......................................................................... 16
Theory of Operation ...................................................................... 17
Functional Block Detail ................................................................. 19
REVISION HISTORY
8/12—Rev. 0 to Rev. A
Changed External Clock Frequency from 3.5 GHz to 2.5 GHz
and Differential Input Voltage Unit from mV p-p to V p-p ....... 4
Updated Outline Dimensions ....................................................... 47
7/12—Revision 0: Initial Version
AD9915
DC Specifications ......................................................................... 4
AC Specifications .......................................................................... 5
Thermal Performance .................................................................. 8
ESD Caution .................................................................................. 8
Single Tone Mode ....................................................................... 17
Profile Modulation Mode .......................................................... 17
Digital Ramp Modulation Mode .............................................. 17
Parallel Data Port Modulation Mode ....................................... 17
Programmable Modulus Mode ................................................. 17
Mode Priority .............................................................................. 18
DDS Core ..................................................................................... 19
Rev. A | Page 2 of 48
Programming and Function pins ................................................. 28
Serial Programming ....................................................................... 31
Parallel Programming (8-/16-Bit) ................................................ 33
Multiple Chip Synchronization .................................................... 34
Register Map and Bit Descriptions .............................................. 36
Outline Dimensions ....................................................................... 47
12-Bit DAC Output .................................................................... 20
DAC Calibration Output ........................................................... 20
Reconstruction Filter ................................................................. 20
Clock Input (REF_CLK/ REF_CLK ) ........................................ 21
PLL Lock Indication .................................................................. 22
Output Shift Keying (OSK) ....................................................... 22
Digital Ramp Generator (DRG) ............................................... 23
Power-Down Control ................................................................ 27
Control Interface—Serial I/O ................................................... 31
General Serial I/O Operation ................................................... 31
Instruction Byte .......................................................................... 31
Serial I/O Port Pin Descriptions .............................................. 31
Serial I/O Timing Diagrams ..................................................... 32
MSB/LSB Transfers .................................................................... 32
Register Bit Descriptions ........................................................... 41
Ordering Guide .......................................................................... 47
Data Sheet