AD5171 查看數據表（PDF） - Analog Devices

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AD5171

64-Position OTP Digital Potentiometer

Analog Devices 

AD5171

TABLE OF CONTENTS

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

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

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

Functional Block Diagram .............................................................. 1

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

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

Electrical Characteristics: 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ .. 3

Timing Characteristics: 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ ...... 5

Absolute Maximum Ratings............................................................ 6

ESD Caution.................................................................................. 6

Pin Configuration and Function Descriptions............................. 7

Typical Performance Characteristics ............................................. 8

Theory of Operation ...................................................................... 12

One-Time Programming (OTP) .............................................. 12

Variable Resistance and Voltage for Rheostat Mode ............. 13

Variable Resistance and Voltage for Potentiometer Mode.... 13

Power Supply Considerations ................................................... 14

ESD Protection ........................................................................... 14

Terminal Voltage Operating Range.......................................... 15

REVISION HISTORY

7/08—Rev. C to Rev. D

Changes to Power Supplies Parameter in Table 1.........................3

Updated Fuse Blow Condition to 400 ms Throughout ...............5

1/08—Rev. B to Rev. C

Updated Format..................................................................Universal

Deleted Note 1; Renumbered Sequentially ................................... 1

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

Changes to Table 2............................................................................ 5

Changes to Table 3............................................................................ 6

Changes to Table 4............................................................................ 7

Changes to Figure 13 to Figure 16.................................................. 9

Changes to Figure 17 and Figure 18............................................. 10

Inserted Figure 24........................................................................... 11

Changes to One-Time Programming (OTP) Section and Power

Supply Considerations Section ..................................................... 12

Deleted Figure 25 and Figure 26................................................... 13

Updated Outline Dimensions ....................................................... 22

Changes to Ordering Guide .......................................................... 22

Power-Up/Power-Down Sequences......................................... 15

Controlling the AD5171 ................................................................ 16

Software Programming ............................................................. 16

Device Programming................................................................. 16

I2C Controller Programming.................................................... 17

I2C-Compatible 2-Wire Serial Bus ........................................... 17

Controlling Two Devices on One Bus ..................................... 18

Applications Information .............................................................. 19

DAC.............................................................................................. 19

Gain Control Compensation .................................................... 19

Programmable Voltage Source with Boosted Output ........... 19

Level Shifting for Different Voltage Operation ...................... 19

Resistance Scaling ...................................................................... 19

Resolution Enhancement .......................................................... 20

RDAC Circuit Simulation Model ............................................. 20

Evaluation Board ............................................................................ 21

Outline Dimensions ....................................................................... 22

Ordering Guide .......................................................................... 22

1/05—Rev. A to Rev. B

Change to Features ............................................................................1

Changes to Electrical Characteristics .............................................3

Change to Table 3 ..............................................................................6

Changes to Power Supply Considerations Section .................... 13

Changes to Level Shifting for Different Voltage Operation

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

Added Note to Ordering Guide.................................................... 22

11/04—Rev. 0 to Rev. A

Changes to Specifications.................................................................3

Changes to Table 3.............................................................................7

Changes to One-Time Programming Section ............................ 11

Changes to Power Supply Consideration Section ...................... 11

Changes to Figure 26 and Figure 27............................................. 12

1/04—Revision 0: Initial Version

Rev. D | Page 2 of 24

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