High voltage 20 MHz video amplifier for IDTV sets

An integrated video output amplifier intended to drive the cathode ray tube (CRT) in IDTV sets and monitors is described. The circuit is realized in a high-voltage (250 V) DMOS/bipolar process and operates with a 200-V power supply. Bandwidth reaches 20 MHz for a 100 Vpp output signal, and slew rate is better than 4 V/ns for a 100 Vpp output square wave. Black level control is provided by a cathode current monitoring system. Special protections to prevent any ESD and CRT flashover overvoltages are built in.<
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