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AD5270BRMZ-100 Datasheet(PDF) 2 Page - Analog Devices |
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AD5270BRMZ-100 Datasheet(HTML) 2 Page - Analog Devices |
2 / 24 page AD5270/AD5271 Data Sheet Rev. F | 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—AD5270 .......................................... 3 Electrical Characteristics—AD5271 .......................................... 5 Interface Timing Specifications.................................................. 7 Absolute Maximum Ratings............................................................ 9 Thermal Resistance ...................................................................... 9 ESD Caution.................................................................................. 9 Pin Configuration and Function Descriptions........................... 10 Typical Performance Characteristics ........................................... 11 Test Circuits..................................................................................... 17 Theory of Operation ...................................................................... 18 Serial Data Interface................................................................... 18 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 Outline Dimensions....................................................................... 23 Ordering Guide .......................................................................... 24 REVISION HISTORY 3/13—Rev. E to Rev. F Changed Resistor Noise Density, RAW = 20 kΩ from 50 nV/√Hz to 13 nV/√Hz; Table 1...................................................................... 4 Changed Resistor Noise Density, RAW = 20 kΩ from 50 nV/√Hz to 13 nV/√Hz; Table 4...................................................................... 6 Updated Outline Dimensions....................................................... 23 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 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 |
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