AN246

AN2458SH Color Encoder IC (NTSC/PAL) for CCD Video Camera s Overview The AN2458SH is a color encoder IC for NTSC/ PAL-compatible CCD video camera. It outputs chroma signal after modulation of inputted R–Y and B–Y color difference signals with subcarrier signals. Unit:mm 1 24 0.5 s Features Compatible with NTSC and PAL Carrier leak adjustment available Built-in blanking circuit Color phase adjustment available Improved temperature characteristics of color phase shift (within ±5˚C) 12 13 0.2±0.1 0.1±0.1 0.65±0.1 0.1 0.15 + – 0.05 (0.5) 5.5±0.3 7.5±0.3 24-Pin SSOP Package (SSOP024-P-0300) s Block Diagrams VREF 24 R–Y IN 23 22 NC R–Y OFF 21 HUE R–Y SC Cont. BF IN 20 19 18 DC. Cont. C 17 BLK. IN 16 15 NC BLK VCC 14 CP2. IN 13 VREF DC Cont. Clamp MOD + CP2 Lim. BLK BLK MOD GC VCC CP2 Clamp CP2 MOD GC + HUE + NC 1 2 3 4 5 6 7 8 9 10 11 12 B–Y IN GND B–Y OFF B–Y SC 90. ADJ HUE.C HUE. BURST CR LEVEL NC CHROMA HUE.R OUT 0.65±0.1 1.5±0.2 6.5±0.3 s Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation Operating ambient temperature Storage temperature Note 1) Note 1) Symbol VCC ICC Rating 5.5 25 120 –20 to +75 –55 to +125 Unit V mA mW ˚C ˚C PD Topr Tstg Note 1) Ta=25˚C except operating ambient temperature and storage temperature. s Recommended Operating Range (Ta=25˚C) Parameter Operating supply voltage range Symbol VCC Range 4.6V to 5.0V s Electrical Characteristics (Ta=25±2˚C) Parameter Supply current...