ADA4805-1/ADA4805-2

Data Sheet

Rev. B | Page 2 of 25

TABLE OF CONTENTS

Features .............................................................................................. 1

 

Applications....................................................................................... 1

 

General Description ......................................................................... 1

 

Typical Applications Circuit............................................................ 1

 

Revision History ............................................................................... 2

 

Specifications..................................................................................... 3

 

±5 V Supply ................................................................................... 3

 

5 V Supply...................................................................................... 4

 

3 V Supply...................................................................................... 5

 

Absolute Maximum Ratings............................................................ 7

 

Thermal Resistance ...................................................................... 7

 

Maximum Power Dissipation ..................................................... 7

 

ESD Caution.................................................................................. 7

 

Pin Configurations and Function Descriptions ........................... 8

 

Typical Performance Characteristics ........................................... 10

 

Test Circuits..................................................................................... 17

 

Theory of Operation ...................................................................... 18

 

Amplifier Description................................................................ 18

 

Input Protection ......................................................................... 18

 

Shutdown Operation.................................................................. 18

 

Noise Considerations................................................................. 19

 

Applications Information .............................................................. 20

 

Slew Enhancement ..................................................................... 20

 

Effect of Feedback Resistor on Frequency Response ............ 20

 

Compensating Peaking in Large Signal Frequency Response

....................................................................................................... 20

 

Driving Low Power, High Resolution Successive

Approximation Register (SAR) ADCs..................................... 20

 

Dynamic Power Scaling............................................................. 21

 

Single-Ended to Differential Conversion ................................... 23

 

Layout Considerations............................................................... 23

 

Outline Dimensions ....................................................................... 24

 

Ordering Guide .......................................................................... 25

 

REVISION HISTORY

12/14—Rev. A to Rev. B

Added 10-Lead LFCSP....................................................... Universal

Changes to SHUTDOWN Current Parameter, Table 2................3

Changes to SHUTDOWN Current Parameter, Table 3................5

Changes to SHUTDOWN Current Parameter, Table 4................6

Changes to Table 6 and Figure 3......................................................7

Changes to Table 8.............................................................................9

Added Figure 6, Renumbered Sequentially ...................................9

Added Figure 42...............................................................................16

Changed Layout ...............................................................................16

Changes to Shutdown Operation Section ....................................18

Changes to Dynamic Power Scaling Section and Figure 61 ......21

Changes to Figure 62 and Figure 63..............................................22

Updated Outline Dimensions ........................................................25

Changes to Ordering Guide ...........................................................25

9/14—Rev. 0 to Rev. A

Added ADA4805-2............................................................. Universal

Changes to Features Section, General Description Section, and

Table 1 .................................................................................................1

Changes to Table 2.............................................................................3

Changes to Table 3.............................................................................4

Changes to Table 4.............................................................................5

Changes to Table 6 and Figure 3......................................................7

Added Figure 6; Renumbered Sequentially; and Table 8;

Renumbered Sequentially.................................................................8

Changes to Figure 7 Caption, Figure 8 Caption, Figure 9

Caption, Figure 10 Caption, and Figure 11 Caption.....................9

Changes to Figure 13 Caption, Figure 14, Figure 17, and

Figure 18 ...........................................................................................10

Change to Figure 29 ........................................................................12

Moved Figure 41 ..............................................................................15

Changes to Figure 42.......................................................................15

Added Figure 43 ..............................................................................15

Changes to Figure 47 and Figure 48..............................................16

Changes to Amplifier Description Section, Input Protection

Section, Shutdown Operation Section, and Figure 51................17

Changes to Noise Considerations Section and Figure 52 ..........18

Changes to Effect of Feedback Resistor on Frequency Response

Section, Compensating Peaking in Large Signal Frequency

Response Section, Figure 57, and Driving Low Power, High

Resolution Successive Approximation Register (SAR) ADC

Section...............................................................................................19

Changes to Figure 58, Dynamic Power Scaling Section,

Figure 59, and Table 10 ...................................................................20

Change to Figure 60 ........................................................................21

Changes to Single-Ended to Differential Conversion Section,

Table 11, and Figure 62 ...................................................................22

Updated Outline Dimensions, Figure 65 .....................................24

Changes to Ordering Guide ...........................................................24

7/14—Revision 0: Initial Version