Datasheet

AD8250 Data Sheet
Rev. C | Page 2 of 24
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Diagram ........................................................................... 5
Absolute Maximum Ratings ............................................................ 6
Maximum Power Dissipation ..................................................... 6
ESD Caution .................................................................................. 6
Pin Configuration and Function Descriptions ............................. 7
Typical Performance Characteristics ............................................. 8
Theory of Operation ...................................................................... 15
Gain Selection ............................................................................. 15
Power Supply Regulation and Bypassing ................................ 17
Input Bias Current Return Path ............................................... 17
Input Protection ......................................................................... 17
Reference Terminal .................................................................... 18
Common-Mode Input Voltage Range ..................................... 18
Layout .......................................................................................... 18
RF Interference ........................................................................... 19
Driving an ADC ......................................................................... 19
Applications ..................................................................................... 20
Differential Output .................................................................... 20
Setting Gains with a Microcontroller ...................................... 20
Data Acquisition ......................................................................... 21
Outline Dimensions ....................................................................... 22
Ordering Guide .......................................................................... 22
REVISION HISTORY
5/13—Rev. B to Rev. C
Changed 49.9 Ω to 100 Ω in Driving an ADC Section and
Figure 55 .......................................................................................... 19
11/10—Rev. A to Rev. B
Changes to Voltage Offset, Offset RTI V
OS
, Average
Temperature Coefficient Parameter in Table 2 ............................. 3
Updated Outline Dimensions ....................................................... 22
5/08—Rev. 0 to Rev. A
Changes to Table 1 ............................................................................ 1
Changes to Table 2 ............................................................................ 3
Changes to Table 3 ............................................................................. 6
Added Figure 17; Renumbered Sequentially ................................. 9
Changes to Figure 23 ...................................................................... 10
Changes to Figure 24 to Figure 26 ................................................ 11
Added Figure 29 ............................................................................. 11
Changes to Figure 31 ...................................................................... 12
Deleted Figure 43 to Figure 46; Renumbered Sequentially ...... 14
Inserted Figure 45 and Figure 46 .................................................. 14
Changes to Timing for Latched Gain Mode Section ................. 16
Changes to Layout Section and Coupling Noise Section .......... 18
Changes to Figure 59 ...................................................................... 21
1/07—Revision 0: Initial Version