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參數(shù)資料
| 型號： | AN207 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | 12-ns DG611 Switch Family Combines Benefits of CMOS and DMOS Technologies |
| 中文描述： | 12納秒DG611開關(guān)系列組合的優(yōu)點CMOS和DMOS技術(shù) |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 149K |
| 代理商： | AN207 |
AN207
Vishay Siliconix
Document Number: 70605
03-Aug-99
www.vishay.com FaxBack 408-970-5600
6-9
FIGURE 14.
Low Pass Switched-Capacitor Filter
V
OUT
DG613
f
CLK
V
IN
C
V
OUT
V
IN
R
i
R
f
C
w
1
R
f
C
R
f
R
i
A
v
C
i
a) Active Low Pass Filter
b) Frequency Response
c) SCF Implementation
R
i
1
C
i
f
CLK
R
f
1
C
f
CLK
Video DC Restoration
Sending video signals over long cable runs often causes dc
offsets and may add power-line hum. When this is the case, a
back porch clamp (or dc restorer) is used to return the
waveform to its proper dc reference level. The same principle
is used for picture brightness adjustments.
GaAs Driver
The DG611 family is capable of switching RF signals up into
the UHF frequencies. The DG613 is ideal for switching RF in
the GHz region when, as shown in Figure 15, it is used to drive
GaAs FET switches. This circuit benefits from the DG613s
high speed, low capacitances, and low power characteristics.
DAC Deglitcher
All DACs produce output glitches when the digital input data
changes. The worst spikes occur when the MSB changes
state, and at one-fourth and three-fourths of full scale. A
deglitcher circuit as shown in Figure 18 acts as a
track-and-hold and removes the output glitches. The DG611 is
ideal because of its low charge injection and high speed.
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