Description
The M52390FP is a semiconductor integrated circuit that has a function for converting R, G and B signals into NTSC/PAL composite video signals, as well as a superimpose function, on a single chip.

FEATUREs
• RGB encoder-related
   - Built-in LPF for color discrimination. An external resistor enables cutoff frequency control.
   - An internal VCA circuit enables gain control of the chroma unit.
   - A high-precision modulation circuit and clamping circuit realize low carrier leaks.
   - Burst and synch signals are generated in the IC.
• Superimpose-related
   - YS IN (control input) enables switching between two input signals, VIDEO IN and RGB IN.
   - An internal high-speed analog switch makes it possible to insert fine text.
   - An internal APC circuit automatically adjusts the color phases of new screen (VIDEO IN) and RGB encoder signals.
• Overall
   - The VIDEO OUT signal is output at 2 VP-P, making it possible to configure a 75 Ω drive circuit with a single transistor.
   - Both NTSC and PAL are supported.

APPLICATION
• TVs, VCRs, monitors and other audio/video devices