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AD5170 Datasheet
I2C Digital Potentiometer
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AD5170
TABLE OF CONTENTS
Features .............................................................................................. 1 
Applications....................................................................................... 1 
Functional Block Diagram .............................................................. 1 
General Description ......................................................................... 1 
Revision History ............................................................................... 2 
Specifications..................................................................................... 4 
Electrical Characteristics: 2.5 kΩ ............................................... 4 
Electrical Characteristics: 10 kΩ, 50 kΩ, and 100 kΩ ............. 5 
Timing Characteristics: 2.5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ... 7 
Absolute Maximum Ratings............................................................ 8 
ESD Caution.................................................................................. 8 
Pin Configuration and Function Descriptions............................. 9 
Typical Performance Characteristics ........................................... 10 
Test Circuits..................................................................................... 14 
Theory of Operation ...................................................................... 15 
One-Time Programming (OTP) .............................................. 15 
Programming the Variable Resistor and Voltage—Rheostat
Operation..................................................................................... 15 
REVISION HISTORY
5/11—Rev. F to Rev. G
Changes to Equation 1 and Equation 2 ....................................... 16
Updated Outline Dimensions ....................................................... 23
Changes to Ordering Guide .......................................................... 23
Changes to I2C Notice .................................................................... 24
5/09—Rev. E to Rev. F
Changes to Resistor Integral Nonlinearity, Table 1...................... 3
Changes to Full-Scale Error, Table 1 .............................................. 3
Changes to Zero-Scale Error, Table 1............................................. 3
Changes to Table 10........................................................................ 19
Changes to Figure 46...................................................................... 20
12/08—Rev. D to Rev. E
Changes to Resistor Integral Nonlinearity, Table 1...................... 3
Changes to OTP Supply Voltage Parameter, Table 1.................... 3
Changes to OTP Voltage Parameter, Table 2 ................................ 5
Changes to Table 5............................................................................ 8
Changes to One-Time Programming (OTP) Section................ 14
Changes to Power Supply Considerations Section..................... 16
Change to Caption, Figure 49 ....................................................... 22
Changes to Ordering Guide .......................................................... 22
7/08—Rev. C to Rev. D
Changes to Power Supplies Parameter in Table 1 and Table 2 ... 3
Updated Fuse Blow Condition to 400 ms Throughout ............... 5
Programming the Potentiometer Divider—Voltage Output
Operation .................................................................................... 16 
ESD Protection ........................................................................... 17 
Terminal Voltage Operating Range ......................................... 17 
Power-Up Sequence ................................................................... 17 
Power Supply Considerations................................................... 17 
Layout Considerations............................................................... 18 
Controlling the AD5170................................................................ 19 
Software Programming ............................................................. 19 
Device Programming................................................................. 19 
I2C Controller Programming.................................................... 21 
I2C-Compatible, 2-Wire Serial Bus.......................................... 21 
Level Shifting for Different Voltage Operation ...................... 22 
Outline Dimensions ....................................................................... 23 
Ordering Guide .......................................................................... 23 
1/08—Rev. B to Rev. C
Updated Format..................................................................Universal
Changes to Table 1.............................................................................3
Changes to Table 2.............................................................................4
Changes to Table 3.............................................................................6
Changes to Table 5.............................................................................8
Inserted Figure 25........................................................................... 12
Changes to One-Time Programming (OTP) Section................ 14
Changes to Power Supply Considerations Section .................... 16
Deleted Figure 38 and Figure 39 .................................................. 17
Updated Outline Dimensions....................................................... 21
Changes to Ordering Guide .......................................................... 21
5/05—Rev. A to Rev. B
Changes to Table 1.............................................................................3
Changes to Table 2.............................................................................5
Changes to Pin Function Descriptions...........................................9
Changes to Figure 28...................................................................... 14
Changes to Power Supply Considerations Section .................... 17
Changes to I2C-Compatible 2-Wire Serial Bus Section............ 21
Added Level Shifting for Different Voltage Operation
Section.............................................................................................. 23
Added Figure 48 ............................................................................. 23
Updated Outline Dimensions....................................................... 24
Changes to Ordering Guide .......................................................... 24
Rev. G | Page 2 of 24

AD5170 Datasheet PDF


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