AD6655-125EBZ1 AD [Analog Devices], AD6655-125EBZ1 Datasheet - Page 2

• Manufacturer Part Number: AD6655-125EBZ1
• Description: IF Diversity Receiver
• Manufacturer: AD [Analog Devices]

AD6655
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Product Highlights ........................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
General Description ......................................................................... 4
Specifications..................................................................................... 5
Absolute Maximum Ratings.......................................................... 18
Pin Configurations and Function Descriptions ......................... 19
Equivalent Circuits ......................................................................... 23
Typical Performance Characteristics ........................................... 24
Theory of Operation ...................................................................... 29
Digital Downconverter .................................................................. 37
ADC DC Specifications—AD6655BCPZ-80/
AD6655BCPZ-105......................................................................... 5
ADC DC Specifications—AD6655BCPZ-125/
AD6655BCPZ-150......................................................................... 6
ADC AC Specifications—AD6655BCPZ-80/
AD6655BCPZ-105......................................................................... 7
ADC AC Specifications—AD6655BCPZ-125/
AD6655BCPZ-150......................................................................... 8
Digital Specifications—AD6655BCPZ-80/
AD6655BCPZ-105......................................................................... 9
Digital Specifications—AD6655BCPZ-125/
AD6655BCPZ-150....................................................................... 11
Switching Specifications—AD6655BCPZ-80/
AD6655BCPZ-105....................................................................... 13
Switching Specifications—AD6655BCPZ-125/
AD6655BCPZ-150....................................................................... 14
Timing Specifications ................................................................ 15
Thermal Characteristics ............................................................ 18
ESD Caution................................................................................ 18
ADC Architecture ...................................................................... 29
Analog Input Considerations.................................................... 29
Voltage Reference ....................................................................... 31
Clock Input Considerations ...................................................... 32
Power Dissipation and Standby Mode..................................... 34
Digital Outputs ........................................................................... 35
Downconverter Modes .............................................................. 37
Numerically Controlled Oscillator (NCO) ............................. 37
Half-Band Decimating Filter and FIR Filter........................... 37
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Numerically Controlled Oscillator (NCO) ................................. 38
Decimating Half-Band Filter and FIR filter................................ 39
ADC Overrange and Gain Control.............................................. 41
Signal Monitor ................................................................................ 44
Channel/Chip Synchronization.................................................... 47
Serial Port Interface (SPI).............................................................. 48
Memory Map .................................................................................. 50
Applications Information .............................................................. 59
Evaluation Board ............................................................................ 61
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Frequency Translation ............................................................... 38
NCO Synchronization ............................................................... 38
Phase Offset................................................................................. 38
NCO Amplitude and Phase Dither.......................................... 38
Half-Band Filter Coefficients.................................................... 39
Half-Band Filter Features .......................................................... 39
Fixed-Coefficient FIR Filter...................................................... 39
Synchronization.......................................................................... 40
Combined Filter Performance.................................................. 40
Final NCO ................................................................................... 40
Fast Detect Overview................................................................. 41
ADC Fast Magnitude ................................................................. 41
ADC Overrange (OR)................................................................ 42
Gain Switching............................................................................ 42
Peak Detector Mode................................................................... 44
RMS/MS Magnitude Mode....................................................... 44
Threshold Crossing Mode......................................................... 45
Additional Control Bits ............................................................. 45
DC Correction ............................................................................ 45
Signal Monitor SPORT Output ................................................ 46
Configuration Using the SPI..................................................... 48
Hardware Interface..................................................................... 48
Configuration Without the SPI ................................................ 49
SPI Accessible Features.............................................................. 49
Reading the Memory Map Register Table............................... 50
Memory Map Register Table..................................................... 51
Memory Map Register Description ......................................... 55
Design Guidelines ...................................................................... 59
Power Supplies ............................................................................ 61
ADC
/8 Fixed-Frequency NCO ................................................... 37