Differential broadband line driver for applications that need high linearity

Texas Instruments THS6222 Differential Broadband Line Driver is an amplifier including a current-feedback architecture manufactured using the company’s proprietary, high-speed, SiGe process. The device is aimed at use in broadband, high-speed, power line communications line driver applications that need high linearity when driving heavy line loads.

The unique architecture of the device uses minimum quiescent current while delivering very high linearity. The amplifier has an adjustable current pin (IADJ) that sets the nominal current consumption. It also includes multiple bias modes that provide for enhanced power savings where the full performance of the amplifier is not required. Shutdown bias mode offers further power savings during receive mode in time division multiplexed (TDM) systems while preserving high output impedance. The integrated mid-supply common-mode buffer removes external components, lessening system cost, and board space. The wide output swing of 57 VPP (100Ohm load) with 32V power supplies joined with over 650mA current drive (25Ohm load), provides for a wide dynamic range that keeps distortion minimal.