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AD8323 Datasheet 5 V CATV Line Driver Fine Step Output Power Control

Manufacturer: Analog Devices

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Datasheet Details

Part number AD8323
Manufacturer Analog Devices
File Size 277.80 KB
Description 5 V CATV Line Driver Fine Step Output Power Control
Datasheet download datasheet AD8323 Datasheet

General Description

DISTORTION – dBc The AD8323 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.

An 8-bit serial word determines the desired output gain over a 53.5 dB range resulting in gain changes of 0.7526 dB/LSB.

The AD8323 comprises a digitally controlled variable attenuator of 0 dB to –53.5 dB, which is preceded by a low noise, fixed gain buffer and is followed by a low distortion high power amplifier.

Overview

a.

Key Features

  • Supports DOCSIS Standard for Reverse Path Transmission Gain Programmable in 0.75 dB Steps Over a 53.5 dB Range Low Distortion at 60 dBmV Output.
  • 56 dBc SFDR at 21 MHz.
  • 55 dBc SFDR at 42 MHz Output Noise Level.
  • 48 dBmV in 160 kHz Maintains 75 ⍀ Output Impedance Power-Up and Power-Down Condition Upper Bandwidth: 100 MHz (Full Gain Range) 5 V Supply Operation Supports SPI Interfaces.

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