Video CMOS power buffer with extended linearity

A CMOS power buffer suitable for video applications is discussed. The use of a high-speed push-pull output stage and a highly linear high-speed driver allows good linearity to be maintained even with very high input frequencies. Indeed, total harmonic distortions (THDs) as good as -66 and -58 dB are achieved at 0.5 and 1 MHz, respectively, with a load resistance of 75 Omega . The integrated prototype, realized using a 1.2- mu m CMOS process, occupies a silicon area of 280 mils/sup 2/.<
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