Product Details
●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.
●### Features and Benefits
● Supports DOCSIS Standard for Reverse Path Transmission
● Gain Programmable in 0.75 dB Steps Over a 59.45 dB Range
● Low Distortion at 61 dBmV Output
●–57 dBc SFDR at 21 MHz
●–55 dBc SFDR at 42 MHz
● Output Noise Level: –48 dBmV in 160 kHz
● Maintains 75Ω Output Impedance
● Transmit Enable and Transmit Disable Modes
● Upper Bandwidth:100 MHz (Full Gain Range)
● 5 V Supply Operation
● Supports SPI Interfaces
