Datasheet

AD5735 Data Sheet
Rev. C | Page 2 of 48
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Companion Products ....................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Detailed Functional Block Diagram .............................................. 3
Specifications ..................................................................................... 4
AC Performance Characteristics ................................................ 7
Timing Characteristics ................................................................ 8
Absolute Maximum Ratings .......................................................... 11
Thermal Resistance .................................................................... 11
ESD Caution ................................................................................ 11
Pin Configuration and Function Descriptions ........................... 12
Typical Performance Characteristics ........................................... 15
Voltage Outputs .......................................................................... 15
Current Outputs ......................................................................... 19
DC-to-DC Converter ................................................................. 23
Reference ..................................................................................... 24
General ......................................................................................... 25
Terminology .................................................................................... 26
Theory of Operation ...................................................................... 28
DAC Architecture ....................................................................... 28
Power-On State of the AD5735 ................................................ 29
Serial Interface ............................................................................ 29
Transfer Function ....................................................................... 29
Registers ........................................................................................... 30
Enabling the Output ................................................................... 31
Data Registers ............................................................................. 32
Control Registers ........................................................................ 34
Readback Operation .................................................................. 37
Device Features ............................................................................... 39
Fault Output ................................................................................ 39
Voltage Output Short-Circuit Protection ................................ 39
Digital Offset and Gain Control ............................................... 39
Status Readback During a Write .............................................. 39
Asynchronous Clear ................................................................... 40
Packet Error Checking ............................................................... 40
Watchdog Timer ......................................................................... 40
Alert Output ................................................................................ 40
Internal Reference ...................................................................... 40
External Current Setting Resistor ............................................ 40
Digital Slew Rate Control .......................................................... 41
Dynamic Power Control............................................................ 41
DC-to-DC Converters ............................................................... 42
AI
CC
Supply Requirements—Static .......................................... 43
AI
CC
Supply Requirements—Slewing ...................................... 43
Applications Information .............................................................. 45
Voltage and Current Output Pins on the Same Terminal ..... 45
Current Output Mode with Internal R
SET
................................ 45
Precision Voltage Reference Selection ..................................... 45
Driving Inductive Loads ............................................................ 46
Transient Voltage Protection .................................................... 46
Microprocessor Interfacing ....................................................... 46
Layout Guidelines....................................................................... 46
Galvanically Isolated Interface ................................................. 47
Outline Dimensions ....................................................................... 48
Ordering Guide .......................................................................... 48
REVISION HISTORY
11/12—Rev. B to Rev. C
Changed Thermal Impedance from 20 °C/W to 28°C/W ........ 11
Changes to Pin 6 Description ....................................................... 12
Changes to Figure 25 ...................................................................... 17
Changes to DUT_AD1, DUT_AD0 Description, Table 12 ...... 32
Changes to Packet Error Checking Section and Internal
Reference Section............................................................................ 40
Changes to Figure 78 ...................................................................... 42
Changes to Figure 83 ...................................................................... 46
Updated Outline Dimensions ....................................................... 48
5/12—Rev. A to Rev. B
Changes to Figure 2 ........................................................................... 3
11/11—Rev. 0 to Rev. A
Added Comments to OUTPUT CHARACTERISTICS and
ACCURACY, CURRENT OUTPUT Parameters in
Table 1 ................................................................................................. 4
Changes to Power-On State of the AD5735 Section .................. 29
Changes to Readback Operation Section .................................... 37
7/11—Revision 0: Initial Version