link to page 1 link to page 1 link to page 1 link to page 1 link to page 1 link to page 1 link to page 1 link to page 1 link to page 2 link to page 2 link to page 3 link to page 3 link to page 3 link to page 3 link to page 4 link to page 4 link to page 4 link to page 4 link to page 4 link to page 4 link to page 5 link to page 5 link to page 9 link to page 9 link to page 9 link to page 9 link to page 10 link to page 10 link to page 10 link to page 10 link to page 10 link to page 10 link to page 10 link to page 10 link to page 11 link to page 11 link to page 11 link to page 11 link to page 11 link to page 11 link to page 11 link to page 13 link to page 13 link to page 14 link to page 14 AD8614/AD8644TABLE OF CONTENTS Features .. 1 Output Short-Circuit Protection...9 Applications... 1 Input Overvoltage Protection ... 10 General Description ... 1 Output Phase Reversal... 10 Pin Configurations ... 1 Power Dissipation... 10 Revision History ... 2 Unused Amplifiers ... 10 Specifications... 3 Capacitive Load Drive ... 11 Electrical Characteristics... 3 Direct Access Arrangement .. 11 Absolute Maximum Ratings.. 4 A One-Chip Headphone/Microphone Preamplifier Thermal Resistance .. 4 Solution.. 11 ESD Caution.. 4 Outline Dimensions ... 13 Typical Performance Characteristics ... 5 Ordering Guide .. 14 Theory of Operation .. 9 REVISION HISTORY9/07—Rev. A to Rev B Change to Current Noise Density in Table 1 .. 3 12/06—Rev. 0 to Rev. A Updated Format..Universal Deleted SPICE Model Availability Section.. 12 Updated Outline Dimensions ... 13 Changes to Ordering Guide .. 14 10/99—Revision 0: Initial Version Rev. B | Page 2 of 16 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PIN CONFIGURATIONS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION OUTPUT SHORT-CIRCUIT PROTECTION INPUT OVERVOLTAGE PROTECTION OUTPUT PHASE REVERSAL POWER DISSIPATION UNUSED AMPLIFIERS CAPACITIVE LOAD DRIVE DIRECT ACCESS ARRANGEMENT A ONE-CHIP HEADPHONE/MICROPHONE PREAMPLIFIER SOLUTION OUTLINE DIMENSIONS ORDERING GUIDE