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AD8322 - 5 V CATV Line Driver Coarse Step Output Power Control

Datasheet Summary

Description

55 fO = 42MHz VO = 60dBmV @ MAX GAIN 60 DISTORTION

The AD8322 is a low-cost, digitally controlled variable gain amplifier optimized for coaxial line driving applications such as cable modems that are designed to the MCNS-DOCSIS upstream standard.

Features

  • Supports DOCSIS Standard for Reverse Path Transmission Gain Programmable in 6 dB Steps Over a 42 dB Range Low Distortion at 60 dBmV Output.
  • 58 dBc SFDR at 21 MHz.
  • 56 dBc SFDR at 42 MHz Output Noise Level.
  • 46 dBmV in 160 kHz Bandwidth Maintains 75 ⍀ Output Impedance Power-Up and Power-Down Condition 180 MHz Bandwidth 5 V Supply Operation Supports SPI Interfaces.

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Datasheet preview – AD8322

Datasheet Details

Part number AD8322
Manufacturer Analog Devices
File Size 243.62 KB
Description 5 V CATV Line Driver Coarse Step Output Power Control
Datasheet download datasheet AD8322 Datasheet
Additional preview pages of the AD8322 datasheet.

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Full PDF Text Transcription

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a FEATURES Supports DOCSIS Standard for Reverse Path Transmission Gain Programmable in 6 dB Steps Over a 42 dB Range Low Distortion at 60 dBmV Output –58 dBc SFDR at 21 MHz –56 dBc SFDR at 42 MHz Output Noise Level –46 dBmV in 160 kHz Bandwidth Maintains 75 ⍀ Output Impedance Power-Up and Power-Down Condition 180 MHz Bandwidth 5 V Supply Operation Supports SPI Interfaces APPLICATIONS Gain Programmable Line Driver DOCSIS-Compliant Data Modems Interactive Set-Top Boxes PC Plug-in Modems General-Purpose Digitally Controlled Variable Gain Block 5 V CATV Line Driver Coarse Step Output Power Control AD8322 FUNCTIONAL BLOCK DIAGRAM VCC (7 PINS) R1 AD8322 VOUT+ BUFFER ATTENUATION CORE 8 DECODE 8 DATA LATCH 8 SHIFT REGISTER POWER AMP ZOUT DIFF = 75⍀ POWER-DOWN LOGIC VOUT– VIN+ VIN– DIFF OR SING
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