Datasheet

AD7328 Data Sheet
Rev. C | Page 2 of 36
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Specifications .................................................................. 6
Absolute Maximum Ratings ............................................................ 7
ESD Caution .................................................................................. 7
Pin Configuration and Function Descriptions ............................. 8
Typical Performance Characteristics ............................................. 9
Terminology .................................................................................... 13
Theory of Operation ...................................................................... 15
Circuit Information .................................................................... 15
Converter Operation .................................................................. 15
Analog Input Structure .............................................................. 16
Typical Connection Diagram ................................................... 18
Analog Input ............................................................................... 18
Driver Amplifier Choice ............................................................ 20
Registers ........................................................................................... 21
Addressing Registers .................................................................. 21
Control Register .......................................................................... 22
Sequence Register ....................................................................... 24
Range Registers ........................................................................... 24
Sequencer Operation ..................................................................... 25
Reference ..................................................................................... 27
V
DRIVE
............................................................................................ 27
Temperature Indicator ............................................................... 27
Modes of Operation ....................................................................... 28
Normal Mode (PM1 = PM0 = 0) ............................................. 28
Full Shutdown Mode (PM1 = PM0 = 1) ................................. 28
Autoshutdown Mode (PM1 = 1, PM0 = 0) ............................. 29
Autostandby Mode (PM1 = 0, PM0 = 1) ................................ 29
Power vs. Throughput Rate ....................................................... 30
Serial Interface ................................................................................ 31
Microprocessor Interfacing ........................................................... 32
AD7328 to ADSP-21xx .............................................................. 32
AD7328 to ADSP-BF53x ........................................................... 32
Applications Information .............................................................. 33
Layout and Grounding .............................................................. 33
Power Supply Configuration .................................................... 33
Outline Dimensions ....................................................................... 34
Ordering Guide .......................................................................... 34
REVISION HISTORY
1/14—Rev. B to Re v. C
Changes to Circuit Information Section and Table 6 ................ 15
Changes to Addressing Registers Section .................................... 21
Changes to Power Supply Configuration Section ...................... 33
Changes to Ordering Guide .......................................................... 34
2/10—Rev. A to Rev. B
Change to Product Highlights Section .......................................... 1
Changes to DC Accuracy Parameter, Test Conditions/
Comments, Table 2 ....................................................................... 3
Changes to Normal Mode (Operational) I
CC
and I
DRIVE
Parameter and to Power Dissipation Normal Mode
Parameter, Table 2 ........................................................................ 5
Changes to Table 14 and Table 15 ................................................ 32
Added Power Supply Configuration Section and Figure 56 ..... 33
Changes to Ordering Guide .......................................................... 34
6/06—Rev. 0 to Rev. A
Changes to Table 1 ............................................................................. 1
Changes to Specifications ................................................................. 3
Added Thermal Hysteresis to Terminology Section.................. 14
Change to Figure 42 ....................................................................... 20
Change to Control Register Section ............................................. 23
10/05—Revision 0: Initial Version