Overview
The LA7577N is a high tone quality and high picture quality, video IF and sound IF IC. It employs split processing
of the video IF signal and sound IF signal using SAW filters and a PLL detector. Further, the PLL detector incorpo
rates a buzz canceler for Nyquist buzz interference suppression to achieve high tone quality.

FEATUREs
• Employs split processing for wide bandwidth video characteristics
• PLL detector with buzz canceler for excellent buzz and buzz beat characteristics
• APC time constant switch built-in
• High-speed AGC supports double time constant method
• SIF carrier level AGC in the 1st SIF stage for good SIF weak electric field characteristics
• Good differential gain and phase characteristics
• RF AGC easily adjusted using a variable resistor