AD8321 Datasheet | Analog Devices

a Features Linear in d B Gain Response Over >53 d B Range Drives Low Distortion >11 d Bm Signal into 75 - Load: - 53 d Bc 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 APPLICATIONS Gain Programmable Line Driver HFC High Speed Data Modems Interactive CATV Set-Top Boxes CATV Plant Test Equipment General Purpose IF Variable Gain Block Gain Programmable CATV Line Driver FUNCTIONAL BLOCK DIAGRAM VIN+ VIN- INV ATTENUATOR CORE PWR AMP REVERSE AMP VOUT DATADASTHAIFLTARTECGHISTER DATA SHIFT REGISTER POWERDOWN/ SWITCH INTER DATEN CLK SDATA DISTORTIONOB- d Bc SOLETE DESCRIPTION The AD8321 is a low cost digitally controlled variable gain amplifier optimized for coaxial line driving applications such as cable modems that are...