EVAL-AD5270SDZ Analog Devices Inc, EVAL-AD5270SDZ Datasheet - Page 2

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EVAL-AD5270SDZ

Manufacturer Part Number
EVAL-AD5270SDZ
Description
EVALUATION BOARD
Manufacturer
Analog Devices Inc
Datasheet

Specifications of EVAL-AD5270SDZ

Main Purpose
Digital Potentiometer
Embedded
No
Utilized Ic / Part
AD5270
Primary Attributes
1 Channel, 1024 Position
Secondary Attributes
2.7 ~ 5.5 V, 5 ppm/°C, SPI Interfaces
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
AD5270/AD5271
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 9
Pin Configuration and Function Descriptions........................... 10
Typical Performance Characteristics ........................................... 11
Test Circuits..................................................................................... 17
Theory of Operation ...................................................................... 18
REVISION HISTORY
12/10—Rev. D to Rev. E
Changes to SDO Pin Description................................................. 10
Changes to SDO Pin and Daisy-Chain Operation Section....... 21
11/10—Rev. C to Rev. D
Changes to Figure 25...................................................................... 14
9/10—Rev. B to Rev. C
Changes to Figure 3 Caption........................................................... 7
Changes to Figure 4 Caption........................................................... 8
Deleted Daisy-Chain Operation Section, Added SDO Pin and
Daisy-Chain Operation Section ................................................... 21
5/10—Rev. A to Rev. B
Added LFCSP Throughout.............................................................. 1
Changed OTP to 50-TP Throughout............................................. 1
Changes to Product Title, Features, and General Description ... 1
Electrical Characteristics—AD5270 .......................................... 3
Electrical Characteristics—AD5271 .......................................... 5
Interface Timing Specifications.................................................. 7
Thermal Resistance ...................................................................... 9
ESD Caution.................................................................................. 9
Serial Data Interface................................................................... 18
Rev. E | Page 2 of 24
Outline Dimensions ....................................................................... 23
Changes to Table 1.............................................................................3
Added Table 3; Renumbered Sequentially .....................................4
Changes to Table 4.............................................................................5
Added Table 6 ....................................................................................6
Changes to Table 8 and Table 9 .......................................................9
Added Figure 6 and changes to Table 10..................................... 10
Replaced Typical Performance Characteristics Section ............ 11
Changes to Figure 44...................................................................... 21
Updated Outline Dimensions....................................................... 23
Changes to Ordering Guide .......................................................... 24
3/10—Rev. 0 to Rev. A
Changes to Product Title and General Description.....................1
Changes to Theory of Operation Section...................................14
10/09—Revision 0: Initial Version
Shift Register ............................................................................... 18
RDAC Register............................................................................ 18
50-TP Memory Block ................................................................ 18
Write Protection ......................................................................... 18
RDAC and 50-TP Read Operation .......................................... 19
Shut-Down Mode....................................................................... 20
Resistor Performance Mode...................................................... 20
Reset ............................................................................................. 20
SDO Pin and Daisy-Chain Operation..................................... 21
RDAC Architecture.................................................................... 21
Programming the Variable Resistor......................................... 22
EXT_CAP Capacitor.................................................................. 22
Terminal Voltage Operating Range ......................................... 22
Power-Up Sequence ................................................................... 22
Ordering Guide .......................................................................... 24

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