DESCRIPTION
The integrated delay line circuit The delay is performed by internally switched capacitors. On-chip postfiltering avoids the need for external filter components. In the case of the U3665M, the postfilter is tuned to Bessel-characteristic. A summing circuitry combines the information of adjacent TV-lines, thus giving an interpolated sum for the PAL-system, storing preceeding lines for the SECAMsystem and providing a comb-filtered output for NTSC-signals. Due to internally generated timing, synchronization is easily done by feeding a line-frequent impulse (usually the SC-impulse) to the sync-input of the IC. FEATURES
D One line delay time, addition of delayed and non-delayed output signals D Line-locked by the sandcastle pulse D No crosstalk between SECAM color carriers (diaphoty) D Adjustment-free application, VCO without external components D Handles negative or positive color-difference input signals D Comb-filtering functions for NTSC colordifference signals D Clamping of...
TEMIC Semiconductors
