AN3497SB [PANASONIC]
Chroma Noise Reduction IC; 色度降低噪音IC
| 型号： | AN3497SB |
| 厂家： | 
PANASONIC |
| 描述： | Chroma Noise Reduction IC |
| 文件： | 总1页 (文件大小：23K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ICs for VCR
AN3497SB
Chroma Noise Reduction IC
Unit : mm
■ Overview
The AN3497SB is a chroma noise reduction (CNR) IC
for VCR and uses a chroma recursive filter system. In
combination with the AN2260 (luminance signal process-
ing), AN2460 (chroma signal processing), etc., it config-
ures a VHS signal processing system.
1
16
■ Features
•
Capable of meeting with the NTSC/PAL system.
Capable of meeting with the EDIT mode and THRU
mode.
8
9
•
•
•
•
•
The CNR limiter level and CNR output level can be adjust-
ed depending on external DC.
The feedback constant (KC) can be set optionally depend-
ing on an external resistor.
The chroma signal can be adjusted depending on an
external resistor.
Built-in functions such as Y vertical correlative signal
detector, etc.
4.3±0.3
6.3±0.3
0.5
16-Pin PANAFLAT Package (SSOP-016-P-0225a)
■ Block Diagram
V
CC
16
15
14
13
12
11
10
9
SW
GCA
8.1dB
B1
CEQ
–2.1dB
–13.2dB
A1
20dB
20dB
Lim.
COR
–20.8dB
–2.1dB
–13.2dB
CTL
Det.
B2
33kΩ 22kΩ
0dB
A2
EF
LPF
7
1
2
3
4
5
6
8
GND
1
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