AD9780 Analog Devices, AD9780 Datasheet - Page 2

• Manufacturer Part Number: AD9780
• Description: Dual 12-Bit, LVDS Interface 500 MSPS DAC
• Manufacturer: Analog Devices

Specifications of AD9780

• Resolution (bits): 12bit
• Dac Update Rate: 500MSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: LVDS,Par

AD9780/AD9781/AD9783
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 5
Pin Configurations and Function Descriptions ........................... 6
Typical Performance Characteristics ............................................. 9
Terminology .................................................................................... 17
Theory of Operation ...................................................................... 18
REVISION HISTORY
6/08—Rev. 0 to Rev. A
Changed Maximum Sample Rate to 500 MHz Throughout ....... 1
Changes to Table 3 ............................................................................ 4
Changes to Building the Array Section ....................................... 25
Changes to Determining the SMP Value Section ....................... 25
Added Evaluation Board Schematics Section ............................. 30
Updated Outline Dimensions ....................................................... 35
11/07—Revision 0: Initial Version
DC Specifications ......................................................................... 3
Digital Specifications ................................................................... 4
AC Specifications .......................................................................... 4
Thermal Resistance ...................................................................... 5
ESD Caution .................................................................................. 5
Serial Peripheral Interface ......................................................... 18
Rev. A | Page 2 of 36
SPI Register Map ............................................................................ 20
SPI Register Descriptions .............................................................. 21
Parallel Data Port Interface ........................................................... 24
Evaluation Board Schematics ........................................................ 30
Outline Dimensions ....................................................................... 35
General Operation of the Serial Interface ............................... 18
Instruction Byte .......................................................................... 18
MSB/LSB Transfers .................................................................... 19
Serial Interface Port Pin Descriptions ..................................... 19
SPI Port, RESET, and Pin Mode ............................................... 23
Optimizing the Parallel Port Timing ....................................... 24
Driving the CLK Input .............................................................. 26
Full-Scale Current Generation ................................................. 26
DAC Transfer Function ............................................................. 27
Analog Modes of Operation ..................................................... 27
Power Dissipation....................................................................... 29
Ordering Guide .......................................................................... 35