An adaptive analog video line driver with impedance matching based on peak detection
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abstract
An analog line driver for video applications is presented. Utilizing a class AB error amplifier structure, the design achieved 1.2 V peak to peak output swing with better than 45 dB linearity for frequencies up to 5 MHz. An adaptive tuning scheme for output impedance matching using peak detection is used to provide uniform performance across line impedance variations. The circuit is designed in AMI 0.5 CMOS technology and has a tuning range of 65 to 135 ohms with a power consumption of about 34 mW.
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2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353)