Some features on our website requires cookies as a part of the technical solution to keep track of the users settings. When you sign up or start placing an order you will be asked to enter the personal data we need to process and fulfill your order. We do also use Google Analytics to get statistics of how our website is used, in order to make the site more user friendly and to enhance our advertising. The statistics is only presented to us in an anonymized format. (Read more about how we handle personal data here)
The AD8321 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 determines the desired output gain over a 53.4 dB range, resulting in gain changes of 0.75 dB/LSB.
The AD8321 is packaged in a low cost 20-lead SOIC, operates from a single +9 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: AD8321-EVAL. Schematic and layout for this evaluation board is contained in the product datasheet.
* Linear in dB Gain Response Over >53 dB Range * Drives Low Distortion >11 dBm Signal into 75 ? Load: –53 dBc SFDR at 42 MHz * Very Low Output Noise Level * Maintains Constant 75 ? Output Impedance Power-Up and Power-Down Condition No Line Transformer Required * Upper Bandwidth: 235 MHz (Min Gain) * 9 V Single Supply Operation * Power-Down Functionality * Supports SPI Interface * Low Cost