AD8324

Data Sheet FEATURES Supports DOCSIS 2.0 and EuroDOCSIS specifications for reverse path transmission systems Gain programmable in 1 dB steps over a 59 dB range Low distortion at 61 dBmV output −59 dBc SFDR at 21 MHz −54 dBc SFDR at 65 MHz Output noise level at minimum gain 1.3 nV/√Hz Maintains 75 Ω output impedance in transmit-enable and transmit-disable condition Upper bandwidth of 100 MHz (full gain range) 3.3 V supply operation Supports SPI® interfaces APPLICATIONS DOCSIS 2.0 and EuroDOCSIS cable modems CATV set-top boxes CATV telephony modems Coaxial and twisted pair line drivers GENERAL DESCRIPTION The AD8324 is a low cost amplifier designed for coaxial line driving. The features and specifications make the AD8324 ideally suited for DOCSIS® 2.0 and EuroDOCSIS applications. The gain of the AD8324 is digitally controlled. An 8-bit serial word determines the desired output gain over a 59 dB range, resulting in gain changes of 1 dB/LSB. The AD8324 accepts a differential or sin...