TDA4650 Overview
The TDA4650 is a monolitic integrated multistandard colour decoder for PAL, SECAM and NTSC (3.58 and 4.43 MHz) with negative colour difference output signals. The colour-difference output signals are fed to the TDA4660/TDA4661, Switched capacitor delay line.
TDA4650 Key Features
- Identification
- automatic standard identification by sequential inquiry
- secure SECAM identification at 50 Hz only, with PAL priority
- four switched outputs for chrominance filter selection and display control
- external service switch for oscillator adjustment
- PAL / NTSC demodulation
- H (burst) and V blanking
- NTSC phase shift (disabled for PAL)
- PLL-controlled reference oscillator
- two reference oscillator crystals on separate pins with automatic switching