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

Manufacturer: Analog Devices

AD8322 5 v catv line driver coarse step output power control by Analog Devices - Datasheet Preview

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	AD8322 Datasheet

General Description

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

An 8-bit serial word determines the desired output gain over a 42.14 dB range, with gain steps of 6.02 dB/major carry.

The AD8322 comprises a digitally controlled variable attenuator of 0 dB to –42.14 dB, which is preceded by a low-noise, fixed-gain buffer and is followed by a low-distortion, high-power amplifier.

Overview

Key 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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