Datasheet AD8362 (Analog Devices) - 2

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AD8362 Data Sheet TABLE OF CONTENTS
Features .. 1 Operation in RF Measurement Mode .. 20 Applications ... 1 Basic Connections .. 20 Functional Block Diagram .. 1 Device Disable .. 20 General Description ... 1 Recommended Input Coupling .. 20 Revision History ... 3 Operation at Low Frequencies .. 21 Specifications ... 4 Choosing a Value for CHPF .. 22 Absolute Maximum Ratings .. 7 Choosing a Value for CLPF ... 22 ESD Caution .. 7 Adjusting VTGT to Accommodate Signals with Very High Pin Configuration and Function Descriptions ... 8 Crest Factors ... 23 Equivalent Circuits ... 9 Altering the Slope ... 23 Typical Performance Characteristics ... 10 Temperature Compensation and Reduction of Transfer Function Ripple .. 24 Characterization Setup .. 16 Temperature Compensation at Various WiMAX Frequencies up Equipment ... 16 to 3.8 GHz .. 25 Analysis .. 16 Operation in Controller Mode ... 27 Circuit Description ... 17 RMS Voltmeter with 90 dB Dynamic Range .. 28 Square Law Detection .. 17 AD8362 Evaluation Board .. 29 Voltage vs. Power Calibration ... 18 Outline Dimensions ... 32 Offset Elimination .. 19 Ordering Guide .. 32 Time-Domain Response of the Closed Loop ... 19 Rev. F | Page 2 of 33 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS EQUIVALENT CIRCUITS TYPICAL PERFORMANCE CHARACTERISTICS CHARACTERIZATION SETUP EQUIPMENT ANALYSIS CIRCUIT DESCRIPTION SQUARE LAW DETECTION VOLTAGE vs. POWER CALIBRATION OFFSET ELIMINATION TIME-DOMAIN RESPONSE OF THE CLOSED LOOP OPERATION IN RF MEASUREMENT MODE BASIC CONNECTIONS DEVICE DISABLE RECOMMENDED INPUT COUPLING Choosing Input Coupling Capacitors Single-Ended Input Drive OPERATION AT LOW FREQUENCIES CHOOSING A VALUE FOR CHPF CHOOSING A VALUE FOR CLPF ADJUSTING VTGT TO ACCOMMODATE SIGNALS WITH VERY HIGH CREST FACTORS ALTERING THE SLOPE TEMPERATURE COMPENSATION AND REDUCTION OF TRANSFER FUNCTION RIPPLE TEMPERATURE COMPENSATION AT VARIOUS WiMAX FREQUENCIES UP TO 3.8 GHz OPERATION IN CONTROLLER MODE RMS VOLTMETER WITH 90 dB DYNAMIC RANGE AD8362 EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE