link to page 1 link to page 1 link to page 1 link to page 1 link to page 2 link to page 3 link to page 3 link to page 4 link to page 4 link to page 4 link to page 5 link to page 6 link to page 12 link to page 12 link to page 16 link to page 17 link to page 18 link to page 18 link to page 19 link to page 20 link to page 20 AD8338Data SheetTABLE OF CONTENTS Features .. 1 Typical Performance Characteristics ..6 Applications ... 1 Theory of Operation .. 12 General Description ... 1 Introduction .. 12 Functional Block Diagram .. 1 Explanation of the Gain Function .. 16 Revision History ... 2 Adjusting The Output Common Mode .. 17 Specifications ... 3 Applications Information .. 18 AC Specifications .. 3 Simple On-Off Keyed (OOK) Receiver ... 18 Absolute Maximum Ratings .. 4 Interfacing the AD8338 to an ADC ... 19 Thermal Resistance .. 4 Outline Dimensions ... 20 ESD Caution .. 4 Ordering Guide .. 20 Pin Configuration and Function Descriptions ... 5 REVISION HISTORY 11/13—Rev. 0 to Rev. A Changes to Features Section, Applications Section, and General Descriptions Section .. 1 Changes to Table 1 .. 3 Changes to Pin 13 and Pin 14 Descriptions .. 5 Added Conditions to Typical Performance Characteristics; Changes to Figure 4 and Figure 5; Changes to Figure 6, Figure 7, Figure 8 Captions .. 6 Changes to Figure 12 and Figure 13... 7 Changes to Figure 18 and Figure 19... 8 Changes to Figure 22 .. 9 Changes to Figure 35 and Figure 36... 11 Replaced Theory of Operation Section ... 12 Changes to Figure 50 .. 18 Changes to Ordering Guide .. 20 4/13—Revision 0: Initial Version Rev. A | Page 2 of 20 Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications AC Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Introduction Overall Structure of the AD8338 VGA Core Normal Operating Conditions INPR, INMR, INPD, and INMD Pins FBKP, FBKM, OUTP, and OUTM Pins Linear-in-dB Gain Control, GAIN Pin Inversion of the Gain Slope, MODE Pin Offset Correction Circuit, OFSN Pin AGC Circuit, VAGC Pin Internal Reference, Pin VREF Explanation of the Gain Function Effects of Using External Resistors Adjusting The Output Common-Mode Voltage Applications Information Simple On-Off Keyed (OOK) Receiver Interfacing the AD8338 to an ADC Outline Dimensions Ordering Guide