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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開關系列組合的優(yōu)點CMOS和DMOS技術(shù) |
| 文件頁數(shù)： | 11/12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
6-11
FIGURE 18.
DAC Deglitcher
1
/
2
DG613
I
OUT
T/H
R
FB
Ref
DAC
V
OUT
V
OUT
T/H
Deglitched
V
OUT
FIGURE 19.
Low Distortion Audio Mixer Eliminates
Switching Noise
DG612
V
1
V
2
V
3
V
4
R
R
F
V
OUT
V
OUT
–
R
F
R
(V
1
...
V
4
)
FIGURE 20.
Static Switch Models
S
D
r
DS(on)
18
C
10 pF
I
D(on)
1 pA
D
C
2 pF
I
D(off)
1 pA
S
C
3 pF
I
S(off)
1 pA
C
SD(off)
0.5 pF
a) On-State
b) Off-State
Audio Mixer
Switching audio inputs at the summing junction of an op amp
eliminates audio distortion due to on-resistance modulation.
This is because when turned on, the analog switch channel
stays at a constant 0 V. Unfortunately, any charge injection
present during switching at the high impedance Op Amp input
gets amplified and can cause large output spikes. These
switching spikes usually cause clicking and/or popping noises.
Thanks to its low charge injection properties, the DG61X family
virtually eliminates this type of switching noise. A small
snubber network connected across the op amp inputs further
reduces any high-speed glitches.
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