Datasheet

AD5762R Data Sheet
Rev. C | Page 2 of 32
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Functional Block Diagram .............................................................. 3
Specifications..................................................................................... 4
AC Performance Characteristics................................................ 6
Timing Characteristics ................................................................ 7
Absolute Maximum Ratings.......................................................... 10
Thermal Resistance .................................................................... 10
ESD Caution................................................................................ 10
Pin Configuration and Function Descriptions........................... 11
Typical Performance Characteristics ........................................... 13
Terminology .................................................................................... 19
Theory of Operation ...................................................................... 21
DAC Architecture....................................................................... 21
Reference Buffers........................................................................ 21
Serial Interface ............................................................................ 21
Simultaneous Updating via
LDAC
........................................... 22
Transfer Function ....................................................................... 23
Asynchronous Clear (
CLR
)....................................................... 23
Registers........................................................................................... 24
Function Register ....................................................................... 24
Data Register............................................................................... 25
Coarse Gain Register ................................................................. 25
Fine Gain Register...................................................................... 25
Offset Register ............................................................................ 26
Offset and Gain Adjustment Worked Example ......................... 26
Design Features............................................................................... 27
Analog Output Control ............................................................. 27
Digital Offset and Gain Control............................................... 27
Programmable Short-Circuit Protection ................................ 27
Digital I/O Port........................................................................... 27
Die Temperature Sensor ............................................................ 27
Local Ground Offset Adjust...................................................... 27
Applications Information.............................................................. 28
Typical Operating Circuit ......................................................... 28
Layout Guidelines........................................................................... 30
Galvanically Isolated Interface ................................................. 30
Microprocessor Interfacing....................................................... 30
Evaluation Board........................................................................ 31
Outline Dimensions ....................................................................... 32
Ordering Guide .......................................................................... 32
REVISION HISTORY
9/11—Rev. B to Rev. C
Changed 50 MHz to 30 MHz Throughout.................................... 1
Changes to t
1
, t
2
, and t
3
Parameters, Table 3.................................. 7
7/11—Rev. A to Rev. B
Changed 30 MHz to 50 MHz Throughout.................................... 1
Changes to t
1
, t
2
, and t
3
Parameters, Table 3.................................. 7
8/09—Rev. 0 to Rev. A
Deleted Endnote 1, Table 1.............................................................. 4
Deleted Endnote 1, Table 2.............................................................. 6
Deleted Endnote 1, Table 3.............................................................. 7
Changes to t
6
Parameter, Table 3 .................................................... 7
12/08—Revision 0: Initial Version