AD8328 Datasheet | Analog Devices

DISTORTIONOBS(d Bc) OLETE Features Supports DOCSIS and Euro DOCSIS standards for reverse path transmission systems Gain programmable in 1 d B steps over a 59 d B range Low distortion at 60 d Bm V output - 57.5 d Bc SFDR at 21 MHz - 54 d Bc SFDR at 65 MHz Output noise level @ minimum gain 1.2 n V/√Hz Maintains 300 Ω output impedance Tx-enable and Tx-disable condition Upper bandwidth: 107 MHz (full gain range) 5 V supply operation Supports SPI interfaces APPLICATIONS DOCSIS and Euro DOCSIS cable modems CATV set-top boxes CATV telephony modems Coaxial and twisted pair line drivers GENERAL DESCRIPTION The AD8328 is a low cost amplifier designed for coaxial line driving. The Features and specifications make the AD8328 ideally suited for MCNS-DOCSIS and Euro DOCSIS applications. The gain of the AD8328 is digitally controlled. An 8-bit serial word determines the desired output gain over a 59 d B range, resulting in gain changes of 1 d B/LSB. The AD8328 accepts a differential or single-ended input...