AD8506/AD8508

Rev. A | Page 2 of 20

TABLE OF CONTENTS

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

 

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

 

Pin Configurations ........................................................................... 1

 

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

 

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

 

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

 

Electrical Characteristics—5 V Operation................................ 3

 

Electrical Characteristics—1.8 V Operation ............................ 4

 

Absolute Maximum Ratings............................................................ 5

 

Thermal Resistance ...................................................................... 5

 

ESD Caution...................................................................................5

 

Typical Performance Characteristics ..............................................6

 

Theory of Operation ...................................................................... 13

 

Applications Information .............................................................. 15

 

Pulse Oximeter Current Source ............................................... 15

 

Four-Pole Low-Pass Butterworth Filter for

Glucose Monitor......................................................................... 16

 

Outline Dimensions ....................................................................... 17

 

Ordering Guide .......................................................................... 17

 

REVISION HISTORY

7/08—Rev. 0 to Rev. A

Added AD8508 ...................................................................Universal

Added TSSOP Package ......................................................Universal

Changes to Features Section and General Description Section . 1

Added Figure 2; Renumbered Sequentially .................................. 1

Changed Electrical Characteristics Heading to Electrical

Characteristics—5 V Operation ..................................................... 3

Changes to Table 1............................................................................ 3

Added Electrical Characteristics—1.8 V Operation Heading.... 4

Changes to Table 2............................................................................ 4

Changes to Table 3, Thermal Resistance Section, and Table 4 ... 5

Characteristics Section..................................................................... 6

Changes to Figure 3, Figure 4, Figure 6, and Figure 7 ................. 6

Added Figure 11 and Figure 14....................................................... 7

Changes to Figure 17 Through Figure 20.......................................8

Changes to Figure 21 Through Figure 26.......................................9

Changes to Figure 27, Figure 28, Figure 30, and Figure 31....... 10

Changes to Figure 34, Figure 37, and Figure 38 ......................... 11

Added Figure 39 and Figure 40 .................................................... 12

Added Theory of Operation Section, Figure 41, and

Figure 42 .......................................................................................... 13

Added Figure 43 and Figure 44 .................................................... 14

Added Applications Information Section and Figure 45 .......... 15

Added Figure 46 ............................................................................. 16

Updated Outline Dimensions....................................................... 17

Added Figure 48 ............................................................................. 17

Changes to Ordering Guide .......................................................... 17

11/07—Revision 0: Initial Version