Datasheet

ADA4941-1
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
Absolute Maximum Ratings ............................................................ 6
Thermal Resistance ...................................................................... 6
ESD Caution .................................................................................. 6
Pin Configuration and Function Descriptions ............................. 7
Typical Performance Characteristics ............................................. 8
Theory of Operation ...................................................................... 15
Basic Operation .......................................................................... 15
DC Error Calculations ............................................................... 16
Output Voltage Noise ................................................................. 17
Frequency Response vs. Closed-Loop Gain ........................... 19
Applications ..................................................................................... 20
Overview ..................................................................................... 20
Using the REF Pin ...................................................................... 20
Internal Feedback Network Power Dissipation ...................... 20
Disable Feature ........................................................................... 20
Adding a 3-Pole, Sallen-Key Filter ........................................... 21
Driving the AD7687 ADC ........................................................ 22
Gain of −2 Configuration .......................................................... 22
Outline Dimensions ....................................................................... 23
Ordering Guide .......................................................................... 23
REVISION HISTORY
8/11—Rev. B to Rev. C
Change to Gain Error Drift Unit, Table 1...................................... 3
Change to Gain Error Drift Unit, Table 2...................................... 4
Change to Gain Error Drift Unit, Table 3...................................... 5
8/10—Rev. A to Rev. B
Added Caption to Figure 1 .............................................................. 1
Added Exposed Pad Notation to Figure 4 and Table 6 ................ 7
Added Exposed Pad Notation to Outline Dimensions ............. 23
Changes to Ordering Guide .......................................................... 23
3/09—Rev. 0 to Rev. A
Change to Gain Error Drift Parameter, Table 1 ............................ 3
Change to Gain Error Drift Parameter, Table 2 ............................ 4
Change to Gain Error Drift Parameter, Table 3 ............................ 5
Updated Outline Dimensions ....................................................... 23
4/06—Revision 0: Initial Version