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AD8347ARUZ-REEL7 Datasheet(PDF) 2 Page - Analog Devices |
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AD8347ARUZ-REEL7 Datasheet(HTML) 2 Page - Analog Devices |
2 / 28 page AD8347 Rev. A | Page 2 of 28 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Typical Performance Characteristics ............................................. 8 RF Amp and Demodulator ......................................................... 8 Baseband Output Amplifiers .................................................... 11 RF Amp/Demod and Baseband Output Amplifiers .............. 12 Equivalent Circuits..................................................................... 14 Theory of Operation ...................................................................... 16 RF Variable Gain Amplifiers (VGA)........................................ 16 Mixers .......................................................................................... 16 Baseband Variable Gain Amplifiers ......................................... 16 Output Amplifiers ...................................................................... 16 LO and Phase Splitters............................................................... 16 Output Level Detector ............................................................... 17 Bias ............................................................................................... 17 Applications..................................................................................... 18 Basic Connections...................................................................... 18 RF Input and Matching ............................................................. 18 LO Drive Interface ..................................................................... 18 Operating the VGA.................................................................... 19 Mixer Output Level and Drive Capability .............................. 19 Operating the VGA in AGC Mode .......................................... 19 Changing the AGC Setpoint ..................................................... 20 Baseband Amplifiers.................................................................. 20 Driving Capacitive Loads.......................................................... 21 External Baseband Amplification ............................................ 21 Filter Design Considerations .................................................... 21 DC Offset Compensation.......................................................... 22 Evaluation Board ............................................................................ 23 Outline Dimensions ....................................................................... 26 Ordering Guide .......................................................................... 26 REVISION HISTORY 10/05—Rev. 0 to Rev. A Updated Format..................................................................Universal Change VGIN to VVGIN..........................................................Universal Changes to Figure 46...................................................................... 19 Changes to Figure 48 ..................................................................... 21 Changes to Figure 49 and Figure 50............................................. 22 Changes to Ordering Guide .......................................................... 27 10/01—Revision 0: Initial Version |
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