AD9248 Analog Devices, AD9248 Datasheet - Page 2

• Manufacturer Part Number: AD9248
• Description: Dual 14-Bit, 20/40/65 MSPS, 3 V Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9248

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 65MSPS
• Interface: Par
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: 1 V p-p,2 V p-p,Uni 1.0V,Uni 2.0V
• Adc Architecture: Pipelined
• Pkg Type: QFP

AD9248
TABLE OF CONTENTS
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 8
Pin Configurations and Function Descriptions ........................... 9
Terminology .................................................................................... 11
Typical Performance Characteristics ........................................... 12
Equivalent Circuits ......................................................................... 16
Theory of Operation ...................................................................... 17
AD9248 LQFP Evaluation Board ................................................. 22
REVISION HISTORY
11/10—Rev. A to Rev. B
Changes to Absolute Maximum Ratings Section ......................... 8
Changes to Figure 3 .......................................................................... 9
Add Figure 4; Renumbered Sequentially ....................................... 9
Changes to Theory of Operation Section and Analog Input
Section .............................................................................................. 17
Deleted Note 1 from Dual ADC LFCSP PCB Section ............... 35
Updated Outline Dimensions ....................................................... 46
3/05—Rev. 0 to Rev. A
Added LFCSP ...................................................................... Universal
Changes to Features .......................................................................... 1
Changes to Applications .................................................................. 1
Changes to General Description .................................................... 1
Changes to Product Highlights ....................................................... 1
Changes to Table 6 .......................................................................... 10
DC Specifications ......................................................................... 3
AC Specifications .......................................................................... 5
Digital Specifications ................................................................... 6
Switching Specifications .............................................................. 7
Explanation of Test Levels ........................................................... 8
ESD Caution .................................................................................. 8
Analog Input ............................................................................... 17
Clock Input and Considerations .............................................. 18
Power Dissipation and Standby Mode ..................................... 19
Digital Outputs ........................................................................... 19
Timing .......................................................................................... 19
Data Format ................................................................................ 20
Voltage Reference ....................................................................... 20
Rev. B | Page 2 of 48
Dual ADC LFCSP PCB .................................................................. 35
Outline Dimensions ....................................................................... 46
Changes to Terminology ............................................................... 11
Changes to Figure 22 ...................................................................... 15
Changes to Clock Input and Considerations Section ................ 18
Changes to Timing Section ........................................................... 19
Changes to Figure 33 ...................................................................... 19
Changes to Data Format Section .................................................. 20
Changes to Table 10 ....................................................................... 24
Changes to Figure 39 ...................................................................... 25
Changes to Table 13 ....................................................................... 36
Updated Outline Dimensions ....................................................... 46
Changes to Ordering Guide .......................................................... 47
1/05—Revision 0: Initial Version
Clock Circuitry ........................................................................... 22
Analog Inputs ............................................................................. 22
Reference Circuitry .................................................................... 22
Digital Control Logic ................................................................. 22
Outputs ........................................................................................ 22
LQFP Evaluation Board Bill of Materials (BOM) .................. 24
LQFP Evaluation Board Schematics ........................................ 25
LQFP PCB Layers ....................................................................... 29
Power Connector ........................................................................ 35
Analog Inputs ............................................................................. 35
Optional Operational Amplifier .............................................. 35
Clock ............................................................................................ 35
Voltage Reference ....................................................................... 35
Data Outputs ............................................................................... 35
LFCSP Evaluation Board Bill of Materials (BOM) ................ 36
LFCSP PCB Schematics ............................................................. 37
LFCSP PCB Layers ..................................................................... 40
Thermal Considerations ............................................................ 45
Ordering Guide .......................................................................... 47