參數(shù)資料
型號: VDP3108
廠商: MICRONAS SEMICONDUCTOR HOLDING AG
英文描述: Single-Chip Video Processor
中文描述: 單芯片視頻處理器
文件頁數(shù): 14/61頁
文件大小: 2638K
代理商: VDP3108
VDP 3108
ADVANCE INFORMATION
MICRONAS INTERMETALL
14
The dynamic range can be adjusted to 0 ... +14 dB for
small high frequency signals. Adjustment is separate for
signal overshoot and for signal undershoot. For large
signals the dynamic range is limited by a nonlinear func-
tion that does not create any visible alias components.
The center frequency of the peaking filter is switchable
from 2.5 MHz to 3.2 MHz. For S-VHS and for notch filter
color decoding, the total system frequency responses
for PAL and NTSC are shown in figure 2–17.
Transients, produced by the dynamic peaking when
switching video source signals, can be suppressed via
the priority bus.
Fig. 2–16:
Dynamic peaking frequency re-
sponse
dB
MHz
20
5
–5
–10
–15
–20
0
2
4
6
8
10
15
10
0
dB
MHz
20
5
–5
–10
–15
–20
0
2
4
6
8
10
15
10
0
dB
MHz
20
5
–5
–10
–15
–20
0
2
4
6
8
10
15
10
0
CF= 3.2 MHz
CF= 2.5 MHz
S-VHS
dB
MHz
20
5
–5
–10
–15
–20
0
2
4
6
8
10
15
10
0
dB
MHz
20
5
–5
–10
–15
–20
0
2
4
6
8
10
15
10
0
CF= 3.2 MHz
CF= 2.5 MHz
PAL/SECAM
dB
MHz
20
5
–5
–10
–15
–20
0
2
4
6
8
10
15
10
0
dB
MHz
20
5
–5
–10
–15
–20
0
2
4
6
8
10
15
10
0
CF= 2.5 MHz
CF= 3.2 MHz
Fig. 2–17:
Total frequency response for peaking filter and S-VHS, PAL, NTSC
NTSC
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