LA7577 Description
EN 4037C Monolithic Linear IC LA7577N Super-split PLL-II VIF and SIF IF Signal Processor for TV/VTRs 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 incorporates a buzz canceler for Nyquist buzz interference suppression to achieve high...
LA7577 Key Features
- Employs split processing for wide bandwidth video characteristics
- PLL detector with buzz canceler for excellent buzz and buzz beat characteristics
- 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
- Preamplifier with AGC
- 1st SIF detector
- SIF limiter amplifier
- FM quadrature detector