HomedatasheetAD8321AR

AD8321AR Datasheet

Special Purpose Amplifiers
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Description

The AD8321AR is a low cost digitally controlled variable gain amplifier optimized for coaxial line driving applications such as cable modems that are designed to the DOCSIS (upstream)standard. An 8-bit serial word determ ines the desired output gain over a 53.4 dB range, resulting in gain changes of 0.75 dB/LSB. AD8321AR Features• Linear in dB Gain Response Over >53 dB Range• Drives Low Distortion >11 dBm Signal into 75Ω Load: –53 dBc SFDR at 42 MHz• Maintains Constant 75Ω Output Impedance• Power-Up and Power-Down Condition• No Line Transformer Required• Upper Bandwidth: 235 MHz (Min Gain)• 9V Single Supply Operation• Power-Down Functionality• Supports SPI Interface• Low Cost AD8321AR Applications • Gain Programmable Line Driver• HFC High Speed Data Modems• Interactive CATV Set-Top Boxes• CATV Plant Test Equipment• General Pur pose IF Variable Gain Block• Very Low Output Noise Level
Features

Parameters

[{"Name":"Number of Channels","Value":"Single"},{"Name":"Operating Supply Voltage","Value":"9 V"},{"Name":"Supply Current","Value":"90 mA "},{"Name":"Maximum Operating Temperature","Value":"+ 85 C"},{"Name":"Minimum Operating Temperature","Value":"- 20 C"},{"Name":"Mounting Style","Value":"SMD/SMT"},{"Name":"Package / Case","Value":"SOIC-20"},{"Name":"Available Set Gain","Value":"53.4 dB"},{"Name":"Input Voltage Range (Max)","Value":"+/- 4.5 V"},{"Name":"","Value":""}]

Manufacturer information

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