The AD8325 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 59.45 dB range resulting in gain changes of 0.7526 dB/LSB.
The AD8325 is packaged in a low-cost 28-lead TSSOP, operates from a single 5 V supply, and has an operational temperature range of -40°C to +85°C.
An evaluation board is available for this product and may be ordered using the following product number AD8325-EVAL.
|Title||Content Type||File Type|
|AD8325: 5 V CATV Line Driver Fine Step Output Power Control Data Sheet (Rev A, 06/2005) (pdf, 731 kB)||Data Sheets|
|AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (pdf, 262 kB)||Application Notes|
|Design and Operation of Automatic Gain Control Loops for Receivers in Modern Communication Systems (pdf, 129 kB)||Tutorials|
|Variable Gain Amplifier Selection Table (pdf, 68 kB)||Product Selection Guide|
|Leading Inside Advertorials: Solving Dynamic Range Problems in Analog Systems (pdf, 75 kB)||Overview|
|What are Variable Gain Amplifiers (VGA's) and how are they used?||FAQs/RAQs||HTML|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.