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AD9775 Datasheet(PDF) 2 Page - Analog Devices |
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AD9775 Datasheet(HTML) 2 Page - Analog Devices |
2 / 56 page AD9775 Rev. E | Page 2 of 56 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 3 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 ESD Caution.................................................................................. 9 Thermal Resistance ...................................................................... 9 Pin Configuration and Function Descriptions........................... 10 Typical Performance Characteristics ........................................... 12 Terminology .................................................................................... 17 Mode Control (via SPI Port) ......................................................... 18 Register Descriptions ..................................................................... 19 Address 0x00 ............................................................................... 19 Address 0x01 ............................................................................... 19 Address 0x02 ............................................................................... 19 Address 0x03 ............................................................................... 20 Address 0x04 ............................................................................... 20 Address 0x05, Address 0x09 ..................................................... 20 Address 0x06, Address 0x0A..................................................... 20 Address 0x07, Address 0x0B ..................................................... 20 Address 0x08, Address 0x0C..................................................... 20 Address 0x08, Address 0x0C..................................................... 20 Functional Description .................................................................. 21 Serial Interface for Register Control ........................................ 21 General Operation of the Serial Interface ............................... 21 Instruction Byte .......................................................................... 22 Serial Interface Port Pin Descriptions ..................................... 22 MSB/LSB Transfers..................................................................... 22 Notes on Serial Port Operation ................................................ 22 DAC Operation........................................................................... 24 1R/2R Mode ................................................................................ 25 Clock Input Configurations...................................................... 25 Programmable PLL .................................................................... 26 Power Dissipation....................................................................... 27 Sleep/Power-Down Modes........................................................ 28 Two-Port Data Input Mode ...................................................... 28 PLL Enabled, Two-Port Mode .................................................. 28 DATACLK Inversion.................................................................. 29 DATACLK Driver Strength....................................................... 29 PLL Enabled, One-Port Mode .................................................. 29 ONEPORTCLK Inversion......................................................... 29 ONEPORTCLK Driver Strength.............................................. 30 IQ Pairing .................................................................................... 30 PLL Disabled, Two-Port Mode................................................. 30 PLL Disabled, One-Port Mode ................................................. 30 Digital Filter Modes ................................................................... 31 Amplitude Modulation.............................................................. 31 Modulation, No Interpolation .................................................. 32 Modulation, Interpolation = 2× ............................................... 33 Modulation, Interpolation = 4× ............................................... 34 Modulation, Interpolation = 8× ............................................... 35 Zero Stuffing ............................................................................... 36 Interpolating (Complex Mix Mode)........................................ 36 Operations on Complex Signals............................................... 36 Complex Modulation and Image Rejection of Baseband Signals .......................................................................................... 37 Image Rejection and Sideband Suppression of Modulated Carriers ........................................................................................ 38 Applying the Output Configurations........................................... 42 Unbuffered Differential Output, Equivalent Circuit ............. 42 Differential Coupling Using a Transformer............................ 42 Differential Coupling Using an Op Amp................................ 43 Interfacing the AD9775 with the AD8345 Quadrature Modulator.................................................................................... 43 Evaluation Board ............................................................................ 44 Outline Dimensions ....................................................................... 54 Ordering Guide .......................................................................... 54 |
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