Datasheet
Table Of Contents
AD8571/AD8572/AD8574 Data Sheet
Rev. F | Page 2 of 28
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Pin Configurations ........................................................................... 1
Revision History ............................................................................... 3
Specifications ..................................................................................... 4
5 V Electrical Characteristics ...................................................... 4
2.7 V Electrical Characteristics ................................................... 5
Absolute Maximum Ratings ............................................................ 6
Thermal Characteristics .............................................................. 6
ESD Caution .................................................................................. 6
Typical Performance Characteristics ............................................. 7
Functional Description .................................................................. 15
Amplifier Architecture .............................................................. 15
Basic Auto-Zero Amplifier Theory .......................................... 15
Auto-Zero Phase ......................................................................... 16
Amplification Phase ................................................................... 16
High Gain, CMRR, and PSRR .................................................. 17
Maximizing Performance Through Proper Layout ............... 17
1/f Noise Characteristics ........................................................... 18
Random Auto-Zero Correction Eliminates Intermodulation
Distortion .................................................................................... 18
Broadband and External Resistor Noise Considerations .......... 19
Output Overdrive Recovery ...................................................... 19
Input Overvoltage Protection ................................................... 19
Output Phase Reversal ............................................................... 19
Capacitive Load Drive ............................................................... 20
Power-Up Behavior .................................................................... 20
Applications Information .............................................................. 21
5 V Precision Strain Gage Circuit ............................................ 21
3 V Instrumentation Amplifier ................................................ 21
High Accuracy Thermocouple Amplifier ............................... 22
Precision Current Meter ............................................................ 22
Precision Voltage Comparator .................................................. 22
Outline Dimensions ....................................................................... 23
Ordering Guide .......................................................................... 25