AD9857AST Analog Devices Inc, AD9857AST Datasheet - Page 2

• Manufacturer Part Number: AD9857AST
• Description: IC QUADRATURE DGTL UPCONV 80LQFP
• Manufacturer: Analog Devices Inc
• Series: AD9857r

Specifications of AD9857AST

• Rohs Status: RoHS non-compliant
• Function: Upconverter
• Frequency: 5MHz ~ 200MHz
• Rf Type: HFC Cable Network
• Package / Case: 80-LQFP

AD9857
TABLE OF CONTENTS
Revision History ............................................................................... 3
General Description ......................................................................... 4
Specifications..................................................................................... 5
Absolute Maximum Ratings............................................................ 8
Pin Configuration and Function Descriptions............................. 9
Typical Performance Characteristics ........................................... 11
Modes Of Operation ...................................................................... 15
Signal Processing Path ................................................................... 18
Explanation of Test Levels........................................................... 8
ESD Caution.................................................................................. 8
Modulated Output Spectral Plots............................................. 11
Single-Tone Output Spectral Plots ........................................... 12
Narrow-band SFDR Spectral Plots........................................... 13
Output Constellations................................................................ 14
Quadrature Modulation Mode ................................................. 15
Single-Tone Mode ...................................................................... 16
Interpolating DAC Mode .......................................................... 17
Input Data Assembler ................................................................ 18
Inverse CIC Filter ....................................................................... 19
Programmable (2× to 63×) CIC Interpolating Filter............. 21
Quadrature Modulator .............................................................. 21
DDS Core..................................................................................... 21
Inverse SINC Filter ..................................................................... 22
Output Scale Multiplier ............................................................. 22
14-Bit D/A Converter ................................................................ 22
Reference Clock Multiplier ....................................................... 23
Rev. C | Page 2 of 40
Input Data Programming .............................................................. 24
Ease of Use Features....................................................................... 32
Outline Dimensions ....................................................................... 38
Control Interface—Serial I/O ................................................... 24
General Operation of the Serial Interface............................... 24
Instruction Byte .......................................................................... 26
Serial Interface Port Pin Descriptions ..................................... 26
Control Register Descriptions .................................................. 27
Profile #0...................................................................................... 27
Profile #1...................................................................................... 28
Profile #2...................................................................................... 28
Profile #3...................................................................................... 28
Latency......................................................................................... 30
Profile Select................................................................................ 32
Setting the Phase of the DDS.................................................... 32
Reference Clock Multiplier ....................................................... 32
PLL Lock...................................................................................... 32
Single or Differential Clock ...................................................... 33
CIC Overflow Pin....................................................................... 33
Clearing the CIC Filter .............................................................. 33
Digital Power-Down .................................................................. 33
Hardware-Controlled Digital Power-Down ........................... 34
Software-Controlled Digital Power-Down ............................. 34
Full Sleep Mode .......................................................................... 34
Power Management Considerations........................................ 34
Support ........................................................................................ 35
Ordering Guide .......................................................................... 39