CLC418

Comlinear CLC418 Dual High-Speed, Low-Power Line Driver August 1996 N Comlinear CLC418 Dual High-Speed, Low-Power Line Driver General Description The Comlinear CLC418 dual high-speed current-feedback operational amplifier is designed to drive low-impedance and high capacitance loads while maintaining high signal fidelity. Operating on ±5V power supplies, each of the CLC418’s amplifiers produces a continuous 96mA output current. Into a back-terminated 50Ω load, the devices produce -85/-64dBc second/third harmonic distortion (Av = +2, Vo = 2Vpp, f = 1MHz). The CLC418’s current-feedback architecture maintains consistent performance over a wide range of gain and signal levels. DC gain and bandwidth can be set independently. With proper resistor selection, either maximally flat gain response or linear phase response can be selected. Requiring a mere 15mW quiescent power per amplifier, the CLC418 offers superior performance-vs-power with a 130MHz small-signal bandwidth, 350V/ms slew rate and quick 4.6ns rise/fall times (2Vstep). The combination of low quiescent power, high output current drive and high performance make the CLC418 a great choice for many battery-powered personal communication/computing systems. Combining the CLC418’s two amplifiers (shown below) results in a powerful differential line driver for driving video signals over unshielded twisted-pair (UTP). The CLC418 can also be used for driving differential-input step-up transformers for applications such as Asynchro...