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AD5162 Datasheet PDF - Analog Devices


SPI Digital Potentiometer

Numéro de référence AD5162
Description SPI Digital Potentiometer
Fabricant Analog Devices 
Logo Analog Devices Logo 
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1 Page
		
AD5162 Datasheet
AD5162 Fiche technique
AD5162
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics: 2.5 kΩ Version................................. 3
Electrical Characteristics: 10 kΩ, 50 kΩ, and 100 kΩ Versions
......................................................................................................... 4
Timing Characteristics: All Versions ......................................... 5
Absolute Maximum Ratings............................................................ 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 8
Test Circuits..................................................................................... 12
REVISION HISTORY
12/10—Rev. B to Rev.C
Added Automotive Parts to Features Section ............................... 1
Added Automotive Products Paragraph...................................... 17
4/09—Rev. A to Rev. B
Changes to Features Section............................................................ 1
Changes to DC Characteristics—Rheostat Mode Parameter and
to DC Characteristics—Potentiometer Divider Mode Parameter,
Table 1 ................................................................................................ 3
Updated Outline Dimensions ....................................................... 17
Changes to Ordering Guide .......................................................... 17
11/03—Rev. 0 to Rev. A
Changes to Electrical Characteristics ............................................ 3
11/03—Revision 0: Initial Version
Theory of Operation ...................................................................... 13
Programming the Variable Resistor and Voltage ................... 13
Programming the Potentiometer Divider............................... 14
ESD Protection ........................................................................... 14
Terminal Voltage Operating Range ......................................... 14
Power-Up Sequence ................................................................... 14
Layout and Power Supply Bypassing ....................................... 15
Constant Bias to Retain Resistance Setting............................. 15
Evaluation Board ........................................................................ 15
SPI Interface .................................................................................... 16
SPI-Compatible, 3-Wire Serial Bus.......................................... 16
Outline Dimensions ....................................................................... 17
Ordering Guide .......................................................................... 17
Automotive Products ................................................................. 17
Rev. C | Page 2 of 20
AD5162 pdf
TIMING CHARACTERISTICS: ALL VERSIONS
VDD = 5 V ± 10%, or 3 V ± 10%; VA = VDD; VB = 0 V; −40°C < TA < +125°C; unless otherwise noted.
Table 3.
Parameter
SPI INTERFACE TIMING CHARACTERISTICS1
Clock Frequency
Input Clock Pulse Width
Data Setup Time
Data Hold Time
CS Setup Time
CS High Pulse Width
CLK Fall to CS Fall Hold Time
CLK Fall to CS Rise Hold Time
CS Rise to Clock Rise Setup
Symbol
fCLK
tCH, tCL
tDS
tDH
tCSS
tCSW
tCSH0
tCSH1
tCS1
Conditions
Clock level high or low
1 See the timing diagrams for the locations of measured values (that is, see Figure 42 and Figure 43).
Min
20
5
5
15
40
0
0
10
Typ
AD5162
Max Unit
25 MHz
ns
ns
ns
ns
ns
ns
ns
ns
Rev. C | Page 5 of 20





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