link to page 1 link to page 1 link to page 1 link to page 1 link to page 3 link to page 4 link to page 7 link to page 7 link to page 7 link to page 7 link to page 8 link to page 9 link to page 16 link to page 16 link to page 17 link to page 18 link to page 20 link to page 21 link to page 21 link to page 21 link to page 21 link to page 21 link to page 22 link to page 23 link to page 23 link to page 24 link to page 24 ADA4941-1Data SheetTABLE OF CONTENTS Features... 1 DC Error Calculations .. 16 Applications ... 1 Output Voltage Noise .. 17 Functional Block Diagram .. 1 Frequency Response vs. Closed-Loop Gain .. 19 General Description .. 1 Applications Information.. 20 Revision History .. 2 Overview .. 20 Specifications ... 3 Using the REF Pin.. 20 Absolute Maximum Ratings ... 6 Internal Feedback Network Power Dissipation ... 20 Thermal Resistance ... 6 Disable Feature... 20 Maximum Power Dissipation ... 6 Adding a 3-Pole, Sallen-Key Filter.. 21 ESD Caution... 6 Driving the AD7687 ADC .. 22 Pin Configuration and Function Descriptions.. 7 Gain of −2 Configuration.. 22 Typical Performance Characteristics.. 8 Outline Dimensions .. 23 Theory of Operation.. 15 Ordering Guide.. 23 Basic Operation ... 15 REVISION HISTORY 5/16—Rev. C to Rev. D8/10—Rev. A to Rev. B Change CP-8-2 to CP-8-13 .. Throughout Added Caption to Figure 1...1 Changes to Figure 4 ..7 Added Exposed Pad Notation to Figure 4 and Table 6 ..7 Added Figure 5; Renumbered Sequential y ..7 Added Exposed Pad Notation to Outline Dimensions ..23 Updated Outline Dimensions ..23 Changes to Ordering Guide ...23 Changes to Ordering Guide ...23 3/09—Rev. 0 to Rev. A8/11—Rev. B to Rev. C Change to Gain Error Drift Parameter, Table 1..3 Change to Gain Error Drift Unit, Table 1 ...3 Change to Gain Error Drift Parameter, Table 2..4 Change to Gain Error Drift Unit, Table 2 ...4 Change to Gain Error Drift Parameter, Table 3..5 Change to Gain Error Drift Unit, Table 3 ...5 Updated Outline Dimensions ..23 4/06—Revision 0: Initial Version Rev. D | Page 2 of 23 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE MAXIMUM POWER DISSIPATION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BASIC OPERATION DC ERROR CALCULATIONS OUTPUT VOLTAGE NOISE FREQUENCY RESPONSE VS. CLOSED-LOOP GAIN APPLICATIONS INFORMATION OVERVIEW USING THE REF PIN INTERNAL FEEDBACK NETWORK POWER DISSIPATION DISABLE FEATURE ADDING A 3-POLE, SALLEN-KEY FILTER DRIVING THE AD7687 ADC GAIN OF −2 CONFIGURATION OUTLINE DIMENSIONS ORDERING GUIDE
