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參數資料
| 型號： | TK15450M |
| 廠商： | TOKO INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 2 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數： | 5/15頁 |
| 文件大小： | 389K |
| 代理商： | TK15450M |
TK15450M/L
GC3-H036
Page 13
12-2. Two-Line Video Driver
As shown in Figure 4, this IC is a useful circuit for
driving two-video lines.
Figure 5 and Figure 6 show the frequency characteristic
and the DG/DP characteristics.
75
500
75
75
75
75
2pF
Figure 4: Two-line video driver
1chDrive
2chDrive
0
2
4
6
8
10
100k
1M
10M
100M
1G
f[Hz]
G
V
[dB]
Figure 5: Frequency characteristics
Figure 6: DG/DP characteristics
12-3. About Frequency Characteristic
If the gain is raised, the frequency characteristic falls on
the balance with the open loop characteristic; this may
end realizing the 30MHz flat characteristic. In this case,
the frequency characteristic can be improved by a
combination application shown in Figure 7.
Rf
Rs
150
75
Cf
Cs
Figure 7: Example of designing a 30MHz flat circuit
The frequency characteristics shown in Figure 8 can be
obtained by setting each constant according to the gain as
follows.
G
V=6dB
Rf=500
, Rs=470, Cf=2pF
G
V=9dB
Rf=470
, Rs=240
G
V=12dB
Rf=470
, Rs=150, Cs=6pF
3
6
9
12
15
100k
1M
10M
100M
1G
f[Hz]
G
V
[dB
]
Figure 8: 30MHz flatness characteristics
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