AD7262 Analog Devices, AD7262 Datasheet - Page 2

• Manufacturer Part Number: AD7262
• Description: 1 MSPS, 12-Bit, Simultaneous Sampling SAR ADC with PGA and Four Comparators
• Manufacturer: Analog Devices

Specifications of AD7262

• Resolution (bits): 12bit
• # Chan: 2
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p,5V p-p
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

AD7262
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 7
Pin Configurations and Function Descriptions ........................... 8
Typical Performance Characteristics ........................................... 10
Terminology .................................................................................... 14
Theory of Operation ...................................................................... 15
REVISION HISTORY
7/08—Revision 0: Initial Version
Timing Specifications .................................................................. 6
Timing Diagram ........................................................................... 6
ESD Caution .................................................................................. 7
Circuit Information .................................................................... 15
Comparators ................................................................................ 15
Operation ..................................................................................... 15
Analog Inputs .............................................................................. 15
V
Reference ..................................................................................... 17
Typical Connection Diagrams .................................................. 17
DRIVE
............................................................................................ 16
Rev. 0 | Page 2 of 32
Modes of Operation ....................................................................... 22
Serial Interface ................................................................................ 25
Calibration ....................................................................................... 27
Microprocessor Interfacing ........................................................... 29
Application Hints ........................................................................... 30
Outline Dimensions ....................................................................... 31
Application Details ..................................................................... 20
Pin-Driven Mode ....................................................................... 22
Gain Selection ............................................................................. 22
Power-Down Modes .................................................................. 22
Control Register ......................................................................... 23
On-Chip Registers ...................................................................... 24
Internal Offset Calibration ........................................................ 27
Adjusting the Offset Calibration Registers ................................. 28
System Gain Calibration............................................................ 28
AD7262/AD7262-5 to ADSP-BF53x ....................................... 29
Grounding and Layout .............................................................. 30
PCB Design Guidelines for LFCSP .......................................... 30
Ordering Guide .......................................................................... 31