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AD5232 数据表(PDF) 2 Page - Analog Devices

部件名 AD5232
功能描述  Nonvolatile Memory, Dual 256-Position Digital Potentiometer
Download  24 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD5232 数据表(HTML) 2 Page - Analog Devices

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AD5232
Data Sheet
Rev. C | Page 2 of 24
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics—10 kΩ, 50 kΩ, 100 kΩ Versions .. 3
Interface Timing Characteristics................................................ 5
Absolute Maximum Ratings............................................................ 7
Thermal Resistance ...................................................................... 7
ESD Caution.................................................................................. 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ............................................. 9
Test Circuits..................................................................................... 12
Theory of Operation ...................................................................... 14
Scratch Pad and EEMEM Programming................................. 14
Basic Operation .......................................................................... 14
EEMEM Protection.................................................................... 14
Digital Input/Output Configuration........................................ 14
Serial Data Interface................................................................... 15
Daisy-Chaining Operation........................................................ 15
Advanced Control Modes ......................................................... 17
Using Additional Internal, Nonvolatile EEMEM................... 18
Terminal Voltage Operating Range ......................................... 18
Detailed Potentiometer Operation .......................................... 18
Programming the Variable Resistor......................................... 19
Programming the Potentiometer Divider............................... 20
Operation from Dual Supplies ................................................. 20
Application Programming Examples ...................................... 20
Equipment Customer Start-up Sequence
for a PCB Calibrated Unit with Protected Settings................ 21
Flash/EEMEM Reliability.......................................................... 21
Evaluation Board ........................................................................ 21
Outline Dimensions....................................................................... 22
Ordering Guide .......................................................................... 22
REVISION HISTORY
11/13—Rev. B to Rev. C
Changed t16 from 25 ms (max) to 25 ms (typ); Table 2 ............... 5
Changes to Ordering Guide .......................................................... 22
09/11—Rev. A to Rev. B
Change to Resistor Noise Voltage Parameter in Table 1 ............. 4
10/09—Rev. 0 to Rev. A
Updated Format..................................................................Universal
Changes to Data Sheet Title ............................................................ 1
Changes to Features Section............................................................ 1
Changes to Applications Section.....................................................1
Change to Wiper Resistance Parameter, Table 1...........................3
Changes to CS Rise to RDY Fall Time Parameter, Table 2...........5
Changes to Figure 2 and Figure 3....................................................6
Changes to Figure 24...................................................................... 12
Added Figure 32 ............................................................................. 13
Changes to Serial Data Interface Section .................................... 15
Changes to Programming the Variable Resistor Section .......... 19
Changes to Ordering Guide.......................................................... 22
10/01—Revision 0: Initial Version


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