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AD9873JS Datasheet(PDF) 2 Page - Analog Devices |
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AD9873JS Datasheet(HTML) 2 Page - Analog Devices |
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2 / 39 page ![]() REV. 0 AD9873 –2– Page FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . 7 THERMAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . 7 EXPLANATION OF TEST LEVELS . . . . . . . . . . . . . . . . 7 ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 DEFINITIONS OF TERMS . . . . . . . . . . . . . . . . . . . . . . . 8 PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . . . . 9 PIN CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . 10 REGISTER BIT DEFINITIONS . . . . . . . . . . . . . . . . . . . 12 TYPICAL PERFORMANCE CHARACTERISTICS . . . 14 Typical Power Consumption Characteristics . . . . . . . . . 14 Dual Sideband Transmit Spectrum . . . . . . . . . . . . . . . . 14 Single Sideband Transmit Spectrum . . . . . . . . . . . . . . . 15 Typical QAM Transmit Performance Characteristics . . 16 Typical ADC Performance Characteristics . . . . . . . . . . . 18 THEORY OF OPERATION . . . . . . . . . . . . . . . . . . . . . . 20 Transmit Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 OSC IN Clock Multiplier . . . . . . . . . . . . . . . . . . . . . . . . 21 Receive Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 CLOCK AND OSCILLATOR CIRCUITRY . . . . . . . . . . 22 PROGRAMMABLE CLOCK OUTPUT REF CLK . . . . 23 SIGMA-DELTA OUTPUTS . . . . . . . . . . . . . . . . . . . . . . 23 SERIAL INTERFACE FOR REGISTER CONTROL . . . 23 General Operation of the Serial Interface . . . . . . . . . . . . 23 Instruction Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Serial Interface Port Pin Description . . . . . . . . . . . . . . . 24 MSB/LSB Transfers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Notes on Serial Port Operation . . . . . . . . . . . . . . . . . . . 24 Page TRANSMIT PATH (Tx) . . . . . . . . . . . . . . . . . . . . . . . . . 24 Transmit Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Data Assembler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Half-Band Filters (HBFs) . . . . . . . . . . . . . . . . . . . . . . . 25 Cascaded Integrator—COMB (CIC) Filter . . . . . . . . . . 25 Combined Filter Response . . . . . . . . . . . . . . . . . . . . . . . 25 Inverse SINC Filter (ISF) . . . . . . . . . . . . . . . . . . . . . . . 27 Tx Signal Level Considerations . . . . . . . . . . . . . . . . . . . 28 Tx Throughput and Latency . . . . . . . . . . . . . . . . . . . . . 28 D/A Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 PROGRAMMING/WRITING THE AD8321/AD8323 CABLE DRIVER AMPLIFIER GAIN CONTROL . . . 29 RECEIVE PATH (Rx) . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ADC Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . 30 Receive Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Driving the Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . 30 Op Amp Selection Guide . . . . . . . . . . . . . . . . . . . . . . . . 31 ADC Differential Inputs . . . . . . . . . . . . . . . . . . . . . . . . 31 ADC Voltage References . . . . . . . . . . . . . . . . . . . . . . . . 31 Video Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 POWER AND GROUNDING CONSIDERATIONS . . . 32 EVALUATION BOARD . . . . . . . . . . . . . . . . . . . . . . . . . 33 Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . 39 TABLE OF CONTENTS |
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