n Overview
The AN2458SH is a color encoder IC for NTSC/
PAL-compatible CCD video camera. It outputs chro-
ma signal after modulation of inputted R–Y and B–Y
color difference signals with subcarrier signals.
n 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)
AN2458SH
Color Encoder IC (NTSC/PAL) for CCD Video Camera
n Block Diagrams
5.5– 0.3
7.5– 0.3
(0.5)
0.1
–
0.1
0.15 0.65
–
0.1
1.5
–
0.2
+
0.1
– 0.05
0.65
–
0.1
6.5
–
0.3
0.5
0.2
–
0.1
1
12
24
13
Unit:mm
24-Pin SSOP Package (SSOP024-P-0300)
24 23 22 21 20 19 18 17 16 15 14 13
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B–Y IN GND B–Y
OFF
B–Y
SC
90.
ADJ
HUE.C HUE.
CR
BURST
LEVEL
NC CHROMA
OUT
HUE.R
HUE
MOD GC
BLKLim.
DC Cont.
CP2
BLK VCC CP2
NC
VCC CP2. INBLK. IN
DC.
Cont. CBF IN
HUE
Cont.R–Y SC
R–Y
OFFR–Y INVREF
VREF
NC
MODClamp
Clamp MOD
CP2
NC
GC
+
+
+
BLK