NTE1890 Datasheet, PDF (6/6 Pages) NTE Electronics – Integrated Circuit NTSC Decoder for TV

Functional Description (Cont’d):
Blanking of RGB Signals
The RGB signals can be blanked via the sandcastle input (Pin8). A slicing level of 1.5V is used for
this blanking function, so that the wide part of the sandcastle pulse is separated from the remainder
of the pulse. During blanking a level of +2V is available at the output.
Pin Connection Diagram
V_CC 1
ACC Detector 2
Chroma Input ³
Peak Detector 4
Decoup Cap 5
Saturation Control 6
Contrast Control ⁷
Sandcastle Pulse 8
Luminance Input 9
Peaking Cap 10
Peaking Control 11
Brightness Control ₁₂
24 Chroma Output
23 GND
22 OSC
21 _{OSC Adjust}
20 Hue Control
19 Hue Control
18
Reference Signal
Phase Adjust
17
Chroma Demod
Input
16 Black Level Clamp
Output
15 _{Blue Output}
14 Green Output
13 _{Red Output}
24
1
1.300 (33.02)
Max
.100 (2.54)
1.100 (27.94)
13
12
.225
(5.73)
Max
.520
(13.2)
.126
(3.22)
Min
.600
(15.24)