A single-chip television IF system

This paper describes the integration of a composite television IF system onto one chip in a 24-lead DIL package. The video IF amplifier, synchronous detector, video amplifier with noise inversion, and gated AGC functions are included together with a limiting amplifier and quadrature detector that can be used as a sound detector or AFC generator. The problems associated with stabilizing the high gains required and incorporating all of the IF function into 24 pins are discussed and the solutions described.