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AD9777-EB Datasheet(PDF) 2 Page - Analog Devices |
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AD9777-EB Datasheet(HTML) 2 Page - Analog Devices |
2 / 60 page AD9777 Rev. C | Page 2 of 60 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 4 Product Highlights ....................................................................... 4 Specifications..................................................................................... 5 DC Specifications ......................................................................... 5 Dynamic Specifications ............................................................... 6 Digital Specifications ................................................................... 7 Digital Filter Specifications ......................................................... 8 Absolute Maximum Ratings............................................................ 9 Thermal Characteristics .............................................................. 9 ESD Caution.................................................................................. 9 Pin Configuration and Function Descriptions........................... 10 Terminology .................................................................................... 12 Typical Performance Characteristics ........................................... 13 Mode Control (via SPI Port)..................................................... 18 Register Description................................................................... 20 Functional Description .................................................................. 22 Serial Interface for Register Control ........................................ 22 General Operation of the Serial Interface ............................... 22 Instruction Byte .......................................................................... 23 R/W .............................................................................................. 23 N1, N0 .......................................................................................... 23 A4, A3, A2, A1, A0..................................................................... 23 Serial Interface Port Pin Descriptions ..................................... 23 MSB/LSB Transfers..................................................................... 23 Notes on Serial Port Operation ................................................ 25 DAC Operation........................................................................... 25 1R/2R Mode ................................................................................ 26 CLOCK Input Configuration ................................................... 26 Programmable PLL .................................................................... 27 Power Dissipation....................................................................... 29 Sleep/Power-Down Modes........................................................ 29 Two Port Data Input Mode ....................................................... 29 PLL Enabled, Two-Port Mode .................................................. 30 DATACLK Inversion.................................................................. 30 DATACLK Driver Strength....................................................... 30 PLL Enabled, One-Port Mode .................................................. 30 ONEPORTCLK Inversion......................................................... 31 ONEPORTCLK Driver Strength.............................................. 31 IQ Pairing .................................................................................... 31 PLL Disabled, Two-Port Mode................................................. 31 PLL Disabled, One-Port Mode ................................................. 32 Digital Filter Modes ................................................................... 32 Amplitude Modulation.............................................................. 32 Modulation, No Interpolation .................................................. 34 Modulation, Interpolation = 2× ............................................... 35 Modulation, Intermodulation = 4× ......................................... 36 Modulation, Intermodulation = 8× ......................................... 37 Zero Stuffing ............................................................................... 38 Interpolating (Complex Mix Mode)........................................ 38 Operations on Complex Signals............................................... 38 Complex Modulation and Image Rejection of Baseband Signals .......................................................................................... 39 Image Rejection and Sideband Suppressions of Modulated Carriers ........................................................................................ 41 Applying the Output Configurations........................................... 46 Unbuffered Differential Output, Equivalent Circuit ............. 46 Differential Coupling Using a Transformer............................ 46 Differential Coupling Using an Op Amp................................ 47 Interfacing with the AD8345 Quadrature Modulator........... 47 Evaluation Board ............................................................................ 48 Outline Dimensions ....................................................................... 58 Ordering Guide .......................................................................... 58 |
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