Datasheet

AD7266
Rev. B | Page 2 of 28
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description......................................................................... 1
Functional Block Diagram .............................................................. 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Timing Specifications .................................................................. 5
Absolute Maximum Ratings............................................................ 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 9
Terminology .................................................................................... 11
Theory of Operation ...................................................................... 13
Circuit Information.................................................................... 13
Converter Operation.................................................................. 13
Analog Input Structure.............................................................. 13
Analog Inputs.............................................................................. 14
Analog Input Selection .............................................................. 17
Output Coding............................................................................ 17
Transfer Functions...................................................................... 18
Digital Inputs .............................................................................. 18
V
DRIVE
............................................................................................ 18
Modes of Operation ....................................................................... 19
Normal Mode.............................................................................. 19
Partial Power-Down Mode ....................................................... 19
Full Power-Down Mode ............................................................ 20
Power-Up Times......................................................................... 21
Power vs. Throughput Rate....................................................... 21
Serial Interface ................................................................................ 22
Microprocessor Interfacing........................................................... 23
AD7266 to ADSP218x............................................................... 23
AD7266 to ADSP-BF53x........................................................... 24
AD7266 to TMS320C541.......................................................... 24
AD7266 to DSP563xx................................................................ 25
Application Hints ........................................................................... 26
Grounding and Layout .............................................................. 26
PCB Design Guidelines for LFCSP .......................................... 26
Evaluating the AD7266 Performance...................................... 26
Outline Dimensions ....................................................................... 27
Ordering Guide .......................................................................... 27
REVISION HISTORY
5/11—Rev. A to Rev. B
Changes to Mnemonic Order for Pin 13 to Pin 18, Pin 23 to Pin
25, and Pin 28, Pin 30 in Table 4 .................................................... 7
Added EPAD Note............................................................................ 7
Updated Outline Dimensions....................................................... 27
Changes to Ordering Guide .......................................................... 27
11/06—Rev. 0 to Rev. A
Changes to Format .............................................................Universal
Changes to Reference Input/Output Section ................................ 4
Changes to Table 4............................................................................ 7
Changes to Terminology Section.................................................. 11
Changes to Figure 24 and Differential Mode Section................ 15
Changes to Figure 29...................................................................... 16
Changes to Figure 39...................................................................... 21
Changes to AD7265 to ADSP-BF53x Section............................. 24
Updated Outline Dimensions....................................................... 27
Changes to Ordering Guide .......................................................... 27
4/05—Revision 0: Initial Version